Washington County School District v. Labor Commission ( 2013 )


Menu:
  •                      
    2013 UT App 205
    _________________________________________________________
    THE UTAH COURT OF APPEALS
    WASHINGTON COUNTY SCHOOL DISTRICT AND UTAH SCHOOL
    BOARD RISK MANAGEMENT ASSOCIATION,
    Petitioners,
    v.
    LABOR COMMISSION AND STEVEN H. BROWN,
    Respondents.
    Opinion
    No. 20110228‐CA
    Filed August 22, 2013
    Original Proceeding in this Court
    Bret A. Gardner and Kristy L. Bertelsen,
    Attorneys for Petitioners
    Aaron J. Prisbrey and Elizabeth B. Grimshaw,
    Attorneys for Respondent Steven H. Brown
    Alan L. Hennebold, Attorney for Respondent
    Labor Commission
    JUDGE CAROLYN B. MCHUGH authored this Opinion, in which
    JUDGES JAMES Z. DAVIS and STEPHEN L. ROTH concurred.
    McHUGH, Judge:
    ¶1     The Washington County School District and the Utah School
    Board Risk Management Association (collectively, the School
    District) seek judicial review of the final order of the Labor
    Commission (the Commission) awarding Steven H. Brown
    additional workers’ compensation benefits. We decline to disturb
    the Commission’s decision.
    BACKGROUND
    ¶2    On January 27, 2003, while employed as a bus driver for the
    School District, Mr. Brown fell off the steps of a school bus. He
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    injured his lower back and was treated by Dr. Dale Stott for left‐
    sided low‐back and leg pain. Dr. Stott initially attempted to
    manage Mr. Brown’s pain by administering lumbar epidural
    steroid injections on May 12, 2003, June 12, 2003, July 22, 2003, May
    12, 2004, and August 3, 2004; a nerve block on October 8, 2003; and
    lumbar paravertebral facet nerve radiofrequency destruction on
    November 4, 2003, and May 19, 2004.1 Despite these treatments,
    Mr. Brown continued to experience back pain. As a result, Dr. Stott
    referred him to a spine surgeon, Dr. Mark Kabins.
    ¶3      On August 20, 2004, Dr. Kabins concluded that an MRI of
    Mr. Brown’s spine “demonstrates a large extruded disc herniation
    at the L4–5[2] with sequestration.”3 Dr. Kabins performed surgery
    to repair the left side of Mr. Brown’s lumbar spine at the L4–5 level
    on August 29, 2004. Dr. Kabins’s notes from an October 1, 2004
    1. Radiofrequency destruction or radiofrequency ablation “is
    a procedure used to reduce pain. An electrical current
    produced by a radio wave is used to heat up a small area of
    nerve tissue, thereby decreasing pain signals from that specific
    area.” See Radiofrequency Ablation for Arthritis Pain, WebMD,
    http://www.webmd.com/pain‐management/radiofrequency‐abla
    tion (last visited Aug. 16, 2013).
    2. “The vertebrae . . . are organized into segments, starting at the
    top of the spinal cord, and within each segment they are
    numbered. . . . The lumbar area (between the chest area and the
    pelvis) contains 5 lumbar vertebrae (L1 through L5) . . . .” See Living
    with a Spinal Cord Injury—What Happens, WebMD (Feb. 16,
    2011), http://www.webmd.com/brain/tc/living‐with‐a‐spinal‐cor
    d‐injury‐what‐happens.
    3. “A disc herniation occurs when the soft cushion between the
    spinal bone ruptures. . . . A disc sequestration occurs when the
    center, gelatinous portion of the disc is not only squeezed out, but
    also separated from the main part of the disc.” Jonathan Cluett,
    Disc Extrusion, Protrusion, and Sequestration, About.com (Oct. 10,
    2005), http://orthopedics.about.com/od/herniateddisc/g/discs.htm.
    20110228‐CA                       2                 
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    postoperative examination indicate that Mr. Brown “does have
    intermittent back discomfort, but is clearly improved and stable.”
    Dr. Kabins prescribed pain medication and scheduled a final
    follow‐up visit to see Mr. Brown a month later. However, Mr.
    Brown returned to Dr. Kabins on October 16, 2004, and reported
    that he “was doing well until 4 days ago when he developed onset
    of back discomfort.” Dr. Kabins prescribed Mr. Brown additional
    pain medication to address his “increased back pain and . . .
    discomfort in his left leg.” Three weeks later, Dr. Kabins reported
    that Mr. Brown was “doing well with minimal discomfort.”
    ¶4     Mr. Brown sought workers’ compensation benefits for his
    2003 workplace injury. The School District accepted liability for the
    injury and paid him permanent partial disability compensation as
    well as medical benefits. At that time, the Commission rated him
    with a 10% whole person impairment and approved his receipt of
    workers’ compensation benefits. In October 2004, Mr. Brown
    returned to work driving a school bus for the School District.
    ¶5      On March 8, 2007, Mr. Brown again saw Dr. Stott and
    reported that he was experiencing “low back pain and left leg pain
    and numbness,” which “ha[d] existed for 2 years.” Mr. Brown
    indicated to Dr. Stott that he did well for about one year after the
    2004 surgery, but then the pain returned, and he now suffered from
    it daily. Dr. Stott diagnosed Mr. Brown with “Failed Back Surgery
    Syndrome” and “Probable recurrent disc herniation.” Dr. Stott also
    ordered an MRI, which was performed on March 22, 2007. The MRI
    confirmed that Mr. Brown had an L4–5 recurrent disc extrusion4
    slightly indenting the thecal sac5 and mildly compromising both
    4. “A disc extrusion occurs when the outer part of the spinal disc
    ruptures, allowing the inner, gelatinous part of the disc to squeeze
    out.” Id.
    5. The thecal sac surrounds the spinal cord and is filled with
    cerebral spinal fluid. See Thecal sac, Wikipedia, http://en.wikipedia
    .org/wiki/Thecal_sac (last visitedAug. 16, 2013).
    20110228‐CA                      3                
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    the lateral recesses6 and the right neuroforamen.7 The radiology
    report from the MRI also indicated some right side involvement,
    stating, “L4–5 demonstrates right posterolateral[8] prominence of
    the disc without enhancement compatible with a broad disc
    extrusion slightly indenting the thecal sac. This mildly
    compromises both lateral recesses and the right neuroforamen.” To
    treat the pain caused by this condition, Dr. Stott administered
    another lumbar epidural steroid injection on April 9, 2007. Dr.
    Stott’s procedure report described the preinjection diagnosis as
    “Failed Back Surgery Syndrome” and “Lumbar radiculopathy,”9
    and the postinjection diagnosis as “SAME.”
    ¶6     Five months later, on September 1, 2007, Mr. Brown was
    attending a local festival when a person called out his name and
    6. “The lateral recess is the space within the spinal canal located
    toward the sides.” Anne Asher, Lateral Recess, About.com (June 22,
    2011), http://backandneck.about.com/od/anatomyexplained/g/La
    teral‐Recess.htm.
    7. The neuroforamen is an opening between vertebrae
    that allows for the passage of the nerves from the spinal
    cord to other parts of the body. See Intervertebral foramina,
    Wikipedia, http://en.wikipedia.org/wiki/Intervertebral_foramina
    (last visited Aug. 16, 2013).
    8. Posterolateral is defined as “[b]ehind and to one side,
    specifically to the outer side.” See Posterolateral, Drugs.com,
    http://www.drugs.com/dict/posterolateral.html (last visited Aug.
    16, 2013).
    9. Lumbar radiculopathy is “one clinical name for pain
    that radiates from a nerve root in the lumbar spine down
    into your legs . . . .” Lumbar Radiculopathy—Symptoms,
    Causes, and Treatments, LumbarSpinalStenosis.com,
    http://www.lumbarspinalstenosis.com/lumbar‐radiculopathy‐sy
    mptoms‐causes‐treatments‐low‐back‐leg‐pain.html (last visited
    Aug. 16, 2013).
    20110228‐CA                     4                
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    then jumped on his back, forcibly knocking Mr. Brown to the
    ground. Although Mr. Brown did not see the person, based on his
    long experience as a bus driver he assumed it was a child he drove
    on the School District’s bus who was excited to see him. Mr. Brown
    felt immediate back pain, and following the festival incident, he
    suffered from constant stabbing, burning pain in his lumbar area
    that radiated from his back all the way down his legs.
    ¶7     Dr. Stott examined Mr. Brown on September 19, 2007, and
    reported that
    Steven Brown is a 38 year‐old male receiving
    treatment at Zion Pain Management for low back
    pain and right lower extremity pain. Today he
    presents with the new right sided symptoms. In the
    past, his symptoms were left sided, but he[] reports
    these have resolved. Steven has received the
    following interventional pain management
    procedures since his last office visit: lumbar
    transforaminal epidural steroid injection x 2. He
    reports 100 percent improvement from this
    procedure. In last 3 weeks has started to radiate to
    right buttock and right lower extremity into right
    2,3,4 toes of right foot with numbness and tingling.
    He states this happened after someone jumped on
    him and he fell. He states the pain is constant.
    Dr. Stott again diagnosed Mr. Brown with “Failed Back Surgery
    Syndrome” and “Lumbar radiculopathy.” Dr. Stott also ordered a
    new MRI.
    ¶8      Dr. Stott’s notes of a subsequent visit on October 2, 2007,
    state that the second MRI showed “[n]ew disc sequestration
    extending cranially behind the L4 Veterbral body with moderate
    right lateral recess compromise and indentation of the thecal sack.”
    The radiology report further indicates that “this disc extrusion
    demonstrates a component which extends left posterolaterally as
    well at L4–5.” Dr. Stott determined that Mr. Brown’s injuries had
    20110228‐CA                      5               
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    progressed since his previous examination and assessed Mr. Brown
    with “Failed Back Surgery Syndrome,” “Lumbar radiculopathy,”
    and “Lumbar Disc Extrusion L4–5.”
    ¶9      On October 6, 2007, Mr. Brown consulted with Dr. Kabins,
    whose notes reflect that since Mr. Brown was last seen on
    November 5, 2004, he has “undergone maintenance care by Zion
    Pain Management” and “has had low back pain, left lower
    extremity radiculopathy.” Dr. Kabins further indicated that Mr.
    Brown “underwent microdecompressive surgery.[10] He had an
    excellent outcome. He has subsequently undergone injection
    therapy . . . on a supportive basis.” According to Dr. Kabins, Mr.
    Brown reported that around September 1, 2007, “he ha[d]
    developed worsening low back pain and worsening right lower
    extremity radicular symptoms. He relays an event where he was
    jumped by a young family boy. He fell to the ground, landed on his
    buttock and developed . . . right lower extremity radiculopathy.”
    Dr. Kabins concluded, “Certainly it appears that the causality for
    the herniated disc is multi factorial, that being a preexisting process
    in the industrial injury, as well as an acute process from the recent
    attack/incident.” Based on his examination, Dr. Kabins advised
    Mr. Brown that surgery was reasonable and appropriate.
    ¶10 On October 25, 2007, Mr. Brown consulted with Dr. Gary
    Snook, who diagnosed him with “Intervertebral disc disorder with
    myelopathy, lumbar region.”11 Dr. Snook also noted that the MRI
    10. Microdecompressive surgery “is a minimally invasive surgical
    procedure in which a portion of a herniated [disc] is removed by
    way of a surgical instrument or laser.” Spinal decompression,
    Wikipedia, http://en.wikipedia.org/wiki/Spinal_decompression
    (last visited Aug. 16, 2013).
    11. Myelopathy is defined as “any functional disturbance
    and/or pathological change in the spinal cord.” Myelopathy,
    TheFreeDictionary.com, http://medical‐dictionary.thefreedictionary
    .com/myelopathy (last visited Aug. 16, 2013).
    20110228‐CA                       6                 
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    of the lumbar spine showed “HNP at L4–5 right sided.”12 At a
    follow‐up visit on October 31, 2007, Dr. Snook reported, “The event
    which precipitated this [lower back] pain was a young child
    jumped on his back[]. He states that the current episode of pain
    started Sept. 1 2007 . . . .” Dr. Snook performed spinal surgery on
    Mr. Brown on November 1 and 5, 2007. Dr. Snook also completed
    a Treating Physician Opinion report on November 20, 2007, which
    answers “yes” to the question, “Is there a medical causal
    relationship between the industrial exposure and the problems for
    which you have been treating the employee . . . ?” Dr. Snook
    continued to treat Mr. Brown through December 2007.
    ¶11 After the 2007 incident, Mr. Brown petitioned the
    Commission for payment of additional medical expenses, other
    recommended medical care, and additional temporary total
    disability compensation. In response, the School District filed an
    answer denying workers’ compensation liability for Mr. Brown’s
    new injuries on the ground that there was no medical causation
    between the 2003 workplace injuries and the 2007 injuries.
    ¶12 At the request of the School District, Dr. Richard Knoebel
    examined Mr. Brown on March 18, 2008. Dr. Knoebel prepared a
    report in which he notes,
    Given the MRI scan findings of right‐sided disc
    extrusion with right neural foraminal narrowing
    remaining, as well as significant degenerative disc
    disease and disc desiccation at that level noted in
    MRI scan prior to 9/1/07, it must be said with a
    reasonable degree of medical probability that “the
    initial work‐related accident (is merely) a
    contributing cause of the subsequent injury.”
    12. HNP is an abbreviation for herniation of the nucleus
    pulposus, commonly known as a herniated disc. See Edgar G.
    Dawson, Herniated Discs: Definition, Progression, and Diagnosis,
    SpineUniverse, http://www.spineuniverse.com/conditions/herni
    ated‐disc/herniated‐discs‐definition‐progression‐diagnosis (last
    visited Aug. 16, 2013).
    20110228‐CA                     7                
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    Although Dr. Knoebel concluded that Mr. Brown “had a
    permanent aggravation of his pre‐existing L4–5 industrial
    condition secondary to the non‐industrial incident of [2007],” he
    explained that his conclusion was based on the assumption that
    this court’s decision in McKesson Corp. v. Labor Commission, 
    2002 UT App 10
    , 
    41 P.3d 468
    , “dictates that the previous work related
    accident has to be ‘merely’ some contributing cause of the
    subsequent injury.” Dr. Knoebel further opined that the prior
    workplace injury “certainly was not the most important or
    significant cause” of the subsequent injury but was “a very minor
    contributing cause.”
    ¶13 A month after he prepared his initial report, Dr. Knoebel
    had a conversation with the School District’s legal counsel. Shortly
    thereafter, Dr. Knoebel wrote a supplemental report opining that
    “the subsequent non‐industrial low back aggravation . . . was not
    the ‘natural result’ of the prior industrial event.” The supplemental
    report further notes, “Not all people with a prior surgical
    discectomy at L4–5 go on to have a re‐rupture as a natural result of
    the original injury and surgery. In this case the significant cause for
    the recurrent disc herniation at L4–5 was the non‐industrial
    permanent aggravation of [2007].”
    ¶14 At a hearing before an Administrative Law Judge (ALJ) on
    May 6, 2008, Mr. Brown gave sworn testimony that he “never
    recovered from the January 27, 2003 accident and was always stiff
    and sore and would have [flare] ups that required pain
    medication.”13 In addition, he introduced his medical records as
    evidence. Those records included the opinions of Dr. Snook, Dr.
    Kabins, and Dr. Knoebel.14 On August 27, 2008, the ALJ issued her
    written decision, concluding, “All medical evidence supports a
    finding that the prior industrial disc injury was a contributing
    13. Those prescriptions were paid for by workers’ compensation
    from the date of the initial injury to 2007.
    14. Dr. Stott, who treated Mr. Brown after both incidents, did not
    provide an opinion as to the impact of the 2003 workplace accident
    on the injuries Mr. Brown suffered in 2007.
    20110228‐CA                       8                 
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    cause to the outcome and injury resulting from the festival
    incident . . . .” In particular, the ALJ determined that Mr. Brown’s
    “disc at the L4–5 level with its ‘residual’ disc extrusion and ‘already
    narrowing’ right neural fragment was a contributing cause to the
    injury.” The ALJ additionally ruled that because there was “no
    evidence that Mr. Brown was engaged in any rash or foolhardy
    conduct” or other intentional or negligent misconduct, “there was
    no break in the chain of causation between his original work
    accident and his injury after the September 2007 incident.”
    Accordingly, the ALJ ordered the School District to pay Mr. Brown
    for reasonable and necessary medical expenses and temporary total
    disability compensation.
    ¶15 In response, the School District filed a motion for review,
    claiming that Dr. Knoebel’s supplemental report established that
    the injuries sustained after the 2003 industrial accident were not the
    medical cause of Mr. Brown’s injuries. The School District further
    argued that Dr. Knoebel’s supplemental report created a conflicting
    medical opinion regarding medical causation and that the ALJ
    should have appointed a medical panel to resolve the issue. The
    Commission agreed with the ALJ that the 2003 accident was a
    contributing cause of Mr. Brown’s 2007 injuries. In doing so, the
    Commission also found that there were no conflicting medical
    opinions. Accordingly, the Commission affirmed the ALJ’s decision
    and awarded Mr. Brown additional workers’ compensation
    benefits. The School District now petitions this court for review of
    the Commission’s decision.
    ISSUES AND STANDARDS OF REVIEW
    ¶16 The School District first argues that the Commission applied
    the wrong medical causation analysis in determining Mr. Brown’s
    eligibility for additional workers’ compensation benefits. Whether
    “the Commission relied upon an incorrect legal standard in
    determining [a petitioner’s] eligibility for additional workers’
    compensation benefits . . . presents a question of law, which we
    review for correctness.” McKesson Corp. v. Labor Comm’n, 
    2002 UT App 10
    , ¶ 10, 
    41 P.3d 468
    . However, an issue is generally not
    20110228‐CA                       9                 
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    properly presented for judicial review unless it has been preserved
    in the administrative proceedings. See Brown & Root Indus. Serv. v.
    Industrial Comm’n, 
    947 P.2d 671
    , 677 (Utah 1997).
    ¶17 The School District also challenges the Commission’s factual
    findings. “To aid the appellate court in conducting a whole record
    review, the party challenging the factual findings must marshal all
    of the evidence and demonstrate that, despite the facts supporting
    the decision, the ‘findings are not supported by substantial
    evidence.’” Martinez v. Media‐Paymaster Plus/Church of Jesus Christ
    of Latter‐day Saints, 
    2007 UT 42
    , ¶ 36, 
    164 P.3d 384
     (quoting Grace
    Drilling Co. v. Board of Review of Indus. Comm’n, 
    776 P.2d 63
    , 68
    (Utah Ct. App. 1989)).
    ¶18 Next, the School District contends that the ALJ erred in
    refusing to refer the case to a medical panel to determine whether
    the 2003 accident was the medical cause of Mr. Brown’s 2007
    injuries and whether the 2007 injuries were the natural result of the
    2003 workplace accident. Although Utah’s Workers’ Compensation
    Act (the Act), see Utah Code Ann. §§ 34A‐2‐101 to ‐1005 (LexisNexis
    2011 & Supp. 2012), generally affords the ALJ discretion whether
    to convene a medical panel in workers’ compensation cases, see id.
    § 34A‐2‐601(1)(b) (2011), the regulations implementing the Act
    require the ALJ to use a medical panel when “one or more
    significant medical issues may be involved,” see Utah Admin. Code
    R602‐2‐2.A. The Administrative Code further provides that
    conflicting medical reports generally constitute a significant
    medical issue. Id. “Whether there are conflicting medical reports is
    a question of fact,” the Commission’s findings on which “[w]e
    must uphold . . . if such findings are supported by substantial
    evidence based upon the record as a whole.” Brown & Root, 947
    P.2d at 677.
    ¶19 Last, the School District argues that the Commission
    misapplied section 34A‐2‐401 of the Act by concluding that
    Mr. Brown’s 2003 industrial accident was the cause of his 2007
    injuries. In particular, the School District challenges the
    Commission’s application of the governing legal standard to the
    facts of this case. Thus, the School District’s argument presents “a
    20110228‐CA                      10               
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    traditional mixed question of law and fact.” See Murray v. Labor
    Comm’n, 
    2013 UT 38
    , ¶ 24. “The standard of review we apply when
    reviewing a mixed question can be either deferential or
    nondeferential . . . .” Id. ¶ 36. We will defer to an agency
    determination of a mixed question when “‘the mixed finding is not
    “law‐like” because it does not lend itself to consistent resolution by
    a uniform body of appellate precedent’ or ‘is “fact‐like” because the
    trial court is in a superior position to decide it.’” Id. ¶ 37 (emphasis
    omitted) (quoting In re Adoption of Baby B., 
    2012 UT 35
    , ¶ 42). In
    Murray, the Utah Supreme Court held that the Commission’s
    decision that a claimant had failed to establish legal causation
    under the Act was law‐like and, therefore, subject to nondeferential
    review. Id. ¶ 40. Accordingly, we uphold the Commission’s
    findings of fact if they are supported by substantial evidence.
    Martinez, 
    2007 UT 42
    , ¶ 17. But we review the Commission’s
    application of the law to the facts for correctness. See Murray, 
    2013 UT 38
    , ¶¶ 33, 40.
    ANALYSIS
    I. The School District Failed To Preserve Its Argument That the
    Commission Should Have Applied a Different Medical
    Causation Analysis.
    ¶20 The School District argues that the Commission applied the
    wrong legal standard in determining medical causation. To put this
    issue in context, we begin our analysis with an overview of the law
    governing causation under the Act.
    ¶21 Section 34A‐2‐401(1) of the Act provides that an employee
    “who is injured . . . by accident arising out of and in the course of
    the employee’s employment, wherever such injury occurred, if the
    accident was not purposely self‐inflicted, shall be paid . . .
    compensation for loss sustained on account of the injury,”
    including medical expenses. Utah Code Ann. § 34A‐2‐401(1)
    (LexisNexis 2011). Here, there is no dispute that Mr. Brown had a
    workplace accident in 2003. The parties are also in agreement that
    Mr. Brown’s 2007 injuries were not self‐inflicted. Thus, the issue in
    20110228‐CA                       11                
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    dispute is whether Mr. Brown’s 2007 injuries arose “out of and in
    the course of [Mr. Brown’s] employment.” See 
    id.
    ¶22 In Mountain States Casing Services v. McKean, 
    706 P.2d 601
    (Utah 1985) (per curiam), the Utah Supreme Court considered
    whether an injury arose out of and in the course of employment
    even though it occurred after the initial workplace accident. 
    Id.
     at
    601–03. There, an employee lost his right arm in an industrial
    accident and it was surgically reattached. 
    Id.
     at 601–02. The
    employee’s doctor advised him that the sensation in his right hand
    would return gradually and instructed him to use the hand as
    much as possible to increase mobility. Id. at 602. After spending a
    day repairing a steam radiator in his home, installing an exhaust
    header in his car, and cooking a meal on a hot plate, the employee
    awoke the following morning with second degree burns on his
    right hand. Id. The employer and its insurer denied liability for the
    medical expenses related to the burn on the grounds that it was
    “unrelated to the original [workplace] accident and [the employee]
    was negligent in not protecting his hand from burns.” Id. On
    review, the Utah Supreme Court affirmed the Industrial
    Commission’s order requiring the employer to pay for the
    employee’s medical expenses, stating, “Once a compensable injury
    occurs, there is no limitation as to the time during which all
    medical[ expenses] resulting from that injury will continue to be
    paid.” Id. at 601–02. The supreme court further explained,
    A subsequent injury is compensable if it is found to
    be a natural result of a compensable primary injury.
    [The employee] is not required to show that his
    original tragedy was the sole cause of a subsequent
    injury, but only that the initial work‐related accident
    was a contributing cause of his subsequent . . . injury.
    Id. at 602.
    ¶23 One year after McKean, the Utah Supreme Court again
    interpreted the Act in Allen v. Industrial Commission, 
    729 P.2d 15
    (Utah 1986). There, an employee with a history of back problems
    suffered a herniated disc while lifting a crate at work. Id. at 17. The
    20110228‐CA                       12                
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    ALJ found that the injury did not arise out of or in the course of
    employment and denied compensation. 
    Id.
     On review, the Utah
    Supreme Court explained that to recover under the Act, the
    employee must prove “a causal connection between the injury and
    the worker’s employment duties.” Id. at 22. The supreme court
    further explained that the employee must prove that the workplace
    accident is both the legal and the medical cause of the injuries. Id.
    at 25–27. For medical causation, the supreme court adopted the test
    advanced by a legal commentator, Professor Arthur Larson, which
    distinguishes between situations in which the employee had a
    medical condition before the workplace injury and those where the
    employee did not, noting,
    “If there is some personal causal contribution in the
    form of a [preexisting condition], the employment
    contribution must take the form of an exertion
    greater than that of nonemployment life . . . .
    If there is no personal causal contribution, that is, if
    there is no prior weakness or disease, any exertion
    connected with the employment and causally
    connected with the [injury] as a matter of medical
    fact is adequate to satisfy the legal test of causation.”
    Id. at 26 (alterations in original) (quoting Larson, Workmen’s
    Compensation § 38.83(b), at 7‐278 (1986)).
    ¶24 More recently, in McKesson Corp. v. Labor Commission, 
    2002 UT App 10
    , 
    41 P.3d 468
    , this court considered whether the Allen
    causation analysis had supplanted the McKean natural result
    standard when determining whether a claimant qualifies for
    additional benefits due to a subsequent aggravation of a
    compensable workplace injury. 
    Id.
     ¶¶ 12–23. The employer in
    McKesson asserted that the compensable primary injury created a
    preexisting condition that placed the burden on the employee
    under Allen to show an extraordinary workplace exertion before he
    was eligible to recover for subsequent aggravation of those injuries.
    Id. ¶ 19. Relying in part on McKean’s treatment of subsequent
    compensable injuries, id. ¶¶ 18, 21, we held that “it would be
    20110228‐CA                       13                
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    inappropriate to examine subsequent aggravations of compensable
    work‐related injuries by applying the same exacting standard that
    we apply when determining the compensability of primary
    workplace injuries involving preexisting conditions,” id. ¶ 22.
    Instead, we concluded that once the initial injury is determined to
    be a compensable injury, “the employer is responsible for ‘all
    medical[ costs] resulting from [the compensable] injury,’ including
    costs resulting from subsequent aggravations to the compensable
    workplace injury.” Id. ¶ 21 (alterations in original) (quoting
    McKean, 706 P.2d at 602). The McKesson court then qualified that
    statement, noting, “Of course, responsibility for costs resulting
    from subsequent aggravations to compensable workplace injuries
    is not automatic. The claimant must first demonstrate that the
    subsequent aggravation is the ‘natural result’ of the primary
    workplace injury or accident.” Id. ¶ 21 n.3 (quoting McKean, 706
    P.2d at 602); see also Champion Home Builders v. Industrial Comm’n,
    
    703 P.2d 306
    , 307 (Utah 1985); Perchelli v. Industrial Comm’n, 
    475 P.2d 835
    , 837 (Utah 1970).
    ¶25 In the present case, the ALJ and the Commission applied the
    natural result test announced in McKean to determine whether
    Mr. Brown’s 2007 injuries are compensable. The School District
    argues on appeal that because the subsequent injury involved an
    outside force rather than Mr. Brown’s own conduct, the
    Commission should have applied the causation standard mandated
    by Allen. Mr. Brown contends that the School District failed to
    preserve this issue in the administrative proceedings. In response,
    the School District points to its Answer to Application for Hearing
    and pretrial disclosures filed before the Commission as having
    preserved this issue. In particular, the School District relies on its
    assertion that Mr. Brown “cannot establish, on a more probable
    than not basis, that there is medically demonstrative causal
    connection between [Mr. Brown’s] current complaints of back pain
    and any industrial event sustained . . . while employed by [the
    School District].”
    ¶26 We agree with Mr. Brown that this statement is insufficient
    to bring to the attention of the ALJ or the Commission that the
    School District sought the application of the Allen causation
    20110228‐CA                      14                
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    standard rather than the McKean natural result standard. There is
    nothing in the record to indicate that the School District ever made
    a specific objection to the ALJ’s application of the McKean causation
    standard. See State v. Low, 
    2008 UT 58
    , ¶ 17, 
    192 P.3d 867
     (“Where
    there is no clear or specific objection and the specific ground for
    objection is not clear from the context[,] the theory cannot be raised
    on appeal.” (alteration in original) (citation and internal quotation
    marks omitted)). Furthermore, while the language upon which the
    School District relies in its written submissions challenges
    Mr. Brown’s ability to prove causation by a preponderance of the
    evidence, it says nothing about the causation test itself. Under these
    circumstances, the argument that the Allen test should apply is not
    preserved and we do not address it on the merits. See Brown & Root
    Indus. Serv. v. Industrial Comm’n, 
    947 P.2d 671
    , 677 (Utah 1997)
    (holding that issues not raised in administrative proceedings are
    not subject to judicial review, absent exceptional circumstances).15
    II. Because the School District Failed to Adequately Marshal the
    Evidence, We Do Not Disturb the Factual Findings.
    ¶27 The School District also attempts to challenge the ALJ’s and
    Commission’s findings of fact. However, the School District has
    failed to marshal the evidence. To challenge a finding of fact, “a
    party may not simply cite to the evidence which supports his or her
    position and hope to prevail. Rather, a party should construct the
    evidence supporting the adversary’s position, and then ferret out
    a fatal flaw in the evidence.” Utah Cnty. v. Butler, 
    2008 UT 12
    , ¶ 11,
    
    179 P.3d 775
     (citations and internal quotation marks omitted). By
    setting forth only the facts that are helpful to its position and
    ignoring those that support the factual findings, the School District
    has turned the marshaling requirement on its head. For example,
    the School District’s statement of the facts emphasizes that Mr.
    Brown had presented “with new right sided symptoms” after the 2007
    incident, that the MRI scan conducted after the 2007 incident
    “revealed that [Mr. Brown] had sustained a new L4–5 right
    15. The School District does not assert that there are any
    exceptional circumstances in the present case that would warrant
    appellate review of an unpreserved issue.
    20110228‐CA                      15                
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    posterolateral disc injury,” and that “Dr. Stott confirmed that [Mr.
    Brown] had sustained a new disk herniation at L4–5.” (Emphases
    added.) However, the MRI scan performed on March 22, 2007,
    prior to the incident with the child, showed that Mr. Brown’s
    “recurrent disc extrusion slightly indenting the thecal sac and
    mildly compromising both lateral recess and the right neuroforamen.”
    (Emphases added.) In direct contravention of the obligation to set
    forth the evidence in favor of the Commission’s factual findings,
    the School District never mentions the existence of this MRI, which
    shows the condition of Mr. Brown’s spine only five months before
    the festival incident. Because the School District has not adequately
    marshaled the evidence, we decline to disturb the factual findings
    of the Commission. See 
    id.
    III. The ALJ Was Not Required To Submit the Question of
    Medical Causation to a Medical Panel.
    ¶28 Next, the School District claims that the ALJ erred by not
    submitting the issue of medical causation to a medical panel. The
    Utah Administrative Code requires the ALJ to refer an issue to a
    medical panel when there are conflicting medical opinions relating
    to causation of the injury. Utah Admin. Code R602‐2‐2.A.
    According to the School District, Dr. Knoebel disagreed with
    Dr. Kabins’s and Dr. Snook’s conclusions that the 2003 workplace
    accident was a contributing cause of Mr. Brown’s 2007 injuries. To
    resolve this issue, we must consider whether there is substantial
    evidence to support the ALJ’s finding that there was no dispute
    among the physicians based on the record as a whole. See Brown &
    Root, 947 P.2d at 677 (“Whether there are conflicting medical
    reports is a question of fact. We must uphold the Commission’s
    factual findings if such findings are supported by substantial
    evidence based upon the record as a whole.”).
    ¶29 Substantial evidence in the record supports the
    Commission’s finding that there was no conflict among the medical
    experts relating to the cause of Mr. Brown’s 2007 injuries.
    Dr. Snook opined that there was a medical causal relationship
    between Mr. Brown’s 2003 work‐related injuries and his 2007
    injuries. Likewise, Dr. Kabins opined that there were multiple
    20110228‐CA                      16               
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    factors that caused the herniated disc, including both the 2003
    accident and the 2007 incident. Consistent with these opinions, Dr.
    Knoebel’s original report states that residual damage to the L4–5
    area of the spine, including the right‐sided disc extrusion apparent
    in the MRI taken before the 2007 incident, “is considered, with a
    reasonable degree of medical probability, a contributing cause” of
    Mr. Brown’s new injuries. Dr. Knoebel further states that Mr.
    Brown “had a permanent aggravation of his pre‐existing L4–5
    industrial condition secondary to the non‐industrial incident of [2007].”
    (Emphases added.)
    ¶30 In the supplemental report Dr. Knoebel filed after consulting
    with the School District’s attorney, he also reported that Mr.
    Brown’s “subsequent . . . low back aggravation . . . was not the
    ‘natural result’ of [his work‐related injury].” The Commission
    noted, however, that Dr. Knoebel “qualified the meaning of
    ‘natural result’ by explaining that not all people who undergo a
    discectomy on one side experience another rupture as a result of
    the injury or surgery.” Neither the ALJ nor the Commission was
    required to consider Dr. Knoebel’s attempts to opine on legal
    causation. Instead, they could properly limit their consideration of
    his report to the medical findings, including that the 2003 accident
    was a “contributing cause” of Mr. Brown’s 2007 injuries. See
    Intermountain Health Care, Inc. v. Board of Review of the Indus.
    Comm’n, 
    839 P.2d 841
    , 845 (Utah Ct. App. 1992) (explaining that an
    ALJ, not a medical panel, is to determine legal causation). Because
    there is substantial evidence in the record to support the
    Commission’s finding that Dr. Knoebel did not disagree with the
    other physicians with respect to medical causation, the ALJ was not
    required to refer that question to a medical panel.
    IV. The Commission Correctly Determined that Mr. Brown’s
    2007 Injuries Were a Natural Result of the 2003 Workplace
    Accident.
    ¶31 The School District further contends that even if the natural
    result standard of causation is applicable and a medical panel was
    not required, “there is insufficient medical evidence to establish
    that the right sided L4–5 disk herniation [Mr. Brown] sustained
    20110228‐CA                        17                
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    from the non‐industrial September 1, 2007 accident is the ‘direct
    and natural result’ of the January 27, 2003 industrial accident.” The
    School District offers two main arguments in support of that
    contention: (A) that the leap of a third party onto Mr. Brown’s back
    was an “independent intervening cause” of his 2007 injuries and
    (B) that Mr. Brown was required to prove that the 2003 workplace
    accident was more than 50% responsible for the 2007 injuries. We
    address each argument in turn.
    A.     The Third Party’s Independent Act Did Not Negate the
    Causal Connection Between the 2003 Workplace Accident
    and the 2007 Injuries.
    ¶32 Relying on tort causation concepts, the School District
    asserts that the leap onto Mr. Brown’s back was an independent,
    intervening cause that broke the chain of causation between the
    2003 workplace accident and Mr. Brown’s 2007 injuries. However,
    workers’ compensation is a statutory remedy and not a tort action.
    Our objective in construing the Act is to give effect to the Utah
    Legislature’s intent. Savage v. Utah Youth Vill., 
    2004 UT 102
    , ¶ 18,
    
    104 P.3d 1242
    . “To discern legislative intent, we look first to the
    statute’s plain language,” and we read that language “as a whole[]
    and interpret its provisions in harmony with other statutes in the
    same chapter and related chapters.” LPI Servs. v. McGee, 
    2009 UT 41
    , ¶ 11, 
    215 P.3d 135
     (alteration in original) (citations and internal
    quotation marks omitted). Furthermore, we interpret the Act
    consistently with its purpose of “simplif[ying] the process of
    awarding compensation for industrial accidents, thereby helping
    injured workers receive benefits and employers avoid tort
    lawsuits.” Reinsurance Fund v. Labor Comm’n, 
    2012 UT 76
    , ¶ 14, 
    289 P.3d 572
    . And we construe the Act “liberally in favor of finding
    employee coverage.” 
    Id.
     (citation and internal quotation marks
    omitted).
    ¶33 The Act provides that an employee “who is injured . . . by
    accident arising out of and in the course of the employee’s
    employment . . . shall be paid” certain benefits and expenses. Utah
    Code Ann. § 34A‐2‐401(1) (LexisNexis 2011). In addition, the
    definition of terms section of the Act states, “‘Personal injury by
    20110228‐CA                       18                
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    accident arising out of and in the course of employment’ includes
    an injury caused by the willful act of a third person directed against
    an employee because of the employee’s employment.” 
    Id.
     § 34A‐2‐
    102(j)(i). The Act further provides,
    When any injury or death for which compensation is
    payable under this chapter or Chapter 3, Utah
    Occupational Disease Act is caused by the wrongful act
    or neglect of a person other than an employer, officer,
    agent, or employee of the employer: (a) the injured
    employee . . . may claim compensation; and (b) the
    injured employee . . . may have an action for
    damages against the third person.
    Id. § 34A‐2‐106(1) (emphases added). Thus, the Act expressly
    contemplates that employees may recover compensation for
    injuries inflicted by the negligence of third parties and injuries
    caused by the willful acts of third parties under some
    circumstances.
    ¶34 Here, Mr. Brown testified that he assumed the person who
    jumped on his back was one of the School District’s students who
    recognized Mr. Brown as his bus driver, raising the possibility that
    the 2007 injuries are recoverable directly as a “‘[p]ersonal injury by
    accident arising out of and in the course of employment.’” Id.
    § 34A‐2‐102(j)(i). However, because the Commission’s factual
    recitation indicates that an “unknown person” jumped on Mr.
    Brown’s back, it did not find that the third party was, in fact, one
    of Mr. Brown’s students who jumped on him “because of [his]
    employment.” See id. Nevertheless, the express language of the Act
    confirms that the right to workers’ compensation is not coextensive
    with tort principles.
    ¶35 Indeed, we have previously declined to utilize tort causation
    concepts in applying the statutory scheme provided by the
    workers’ compensation system, stating,
    [A] “proximate cause” analysis, as that term is
    commonly used, is not appropriate in workers’
    20110228‐CA                      19                
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    compensation cases. Proximate cause is used
    primarily in tort law and involves analysis of
    foreseeability, negligence and intervening causes.
    These factors are not present in the statutory
    workers’ compensation system, which excludes
    consideration of fault.
    Large v. Industrial Comm’n, 
    758 P.2d 954
    , 956 (Utah Ct. App. 1988)
    (citing A. Larson, 1 Workmen’s Compensation Law § 6.60 (1985)).
    Therefore, although the unexpected leap by a third party onto Mr.
    Brown’s back might affect whether causation has been met, the
    relevant causation standard is whether the 2007 injuries were a
    natural result of the 2003 workplace accident. See Mountain States
    Casing Servs. v. McKean, 
    706 P.2d 601
    , 602 (Utah 1985) (per curiam).
    ¶36 According to the School District, Dr. Knoebel’s opinion
    indicates that the 2007 injuries were not the natural result of the
    2003 workplace accident because they would have resulted even in
    the absence of the prior industrial accident. Contrary to the School
    District’s characterization, Dr. Knoebel did not opine that the
    “subsequent non‐industrial medical condition would have more
    probably than not occurred even without the primary industrial
    event.” Dr. Knoebel said only that the 2007 incident could have
    occurred even if Mr. Brown had not suffered the prior industrial
    injuries to his lumbar spine.16 We consider Dr. Knoebel’s choice of
    verb significant. By indicating that the 2007 injuries could have
    been caused even if Mr. Brown had not suffered the 2003 industrial
    16. Dr. Knoebel’s report states,
    By the description of the [2007] incident, however,
    this, in and of itself, could have caused the same
    right‐sided L4–5 disc extrusion with onset of right leg
    radiculopathy, to a reasonable degree of medical
    probability, absent the previous L4–5 disc injury.
    Nonetheless, [Mr. Brown] does have the history of a
    pre‐existing surgery with associated disc
    degeneration at that level on an industrial basis.
    (Emphasis added.)
    20110228‐CA                      20               
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    accident, Dr. Knoebel simply indicated that it was possible.
    Furthermore, we agree with the Commission that “there is no
    evidence that Mr. Brown would have suffered his current low‐back
    injury regardless of his work‐related injury in 2003.” Indeed, even
    Dr. Knoebel acknowledges that the 2007 injuries are at the same
    level of the spine as was impacted in the 2003 industrial accident
    and that the MRI of Mr. Brown’s lumbar spine taken before the
    2007 festival incident revealed right‐sided abnormalities.
    Consequently, nothing about Dr. Knoebel’s opinions negates the
    causal connection between the 2007 injuries and the 2003 industrial
    accident. To the contrary, Dr. Knoebel acknowledged that the 2003
    accident was a contributing cause, albeit a minor one.
    B.     The Preponderance of the Evidence Standard Does Not
    Require the Workplace Accident To Be More than 50% of
    the Cause of the Subsequent Injury.
    ¶37 The School District next contends that medical causation
    between injuries sustained in an initial work‐related accident and
    subsequent injuries must be established “by a preponderance of the
    evidence.” We agree. See Allen v. Industrial Comm’n, 
    729 P.2d 15
    , 23
    (Utah 1986) (“[T]he standard to prove causal connection is [by a]
    preponderance of the evidence.”); Large, 
    758 P.2d at 956
     (same). The
    School District further argues that the requirement that “the causal
    connection between the two accidents be supported by at least a
    preponderance of evidence” means that the workplace accident
    must constitute “more than 50%” of the cause of the subsequent
    injury. However, the School District confuses the facts required to
    prove causation with the standard by which those facts must be
    established.
    ¶38 The Utah Legislature knew how to expressly limit recovery
    to injuries caused more than 50% by the workplace accident if that
    had been its intent. See LPI Servs. v. McGee, 
    2009 UT 41
    , ¶ 11, 
    215 P.3d 135
     (stating that legislative intent is derived from the plain
    language of the statute read in harmony “with other statutes in the
    same chapter and related chapters” (citation and internal quotation
    marks omitted)). Similar to the Act, the Utah Occupational Disease
    Act provides for compensation when a disease “arises out of and
    20110228‐CA                     21               
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    in the course of employment and is medically caused or aggravated
    by that employment.” See Utah Code Ann. § 34A‐3‐103 (LexisNexis
    2011). With respect to “[p]hysical, mental, or emotional diseases
    related to mental stress arising out of and in the course of
    employment,” the Utah Occupational Disease Act expressly limits
    legal causation to instances in which “extraordinary mental stress
    aris[es] predominantly and directly from employment.” Id. § 34A‐
    3‐106(1)–(2)(a). By using the word “predominantly,” the legislature
    evidenced an intent that compensation be available for these stress‐
    induced workplace diseases only when “the sum of all work
    related stress is greater than the sum of all non‐work related
    stress.” Eastern Utah Broad. v. Labor Comm’n, 
    2007 UT App 99
    , ¶ 9,
    
    158 P.3d 1115
    .
    ¶39 Unlike the Utah Occupational Disease Act, nothing in the
    Workers’ Compensation Act expressly limits compensation to
    injuries predominantly caused by the workplace accident. The
    absence of such a limitation provides some evidence that the
    legislature did not intend to restrict recovery to instances where the
    workplace accident constitutes over 50% of the cause of the
    subsequent injuries. Cf. Envirocare of Utah, Inc. v. Tax Comm’n, 
    2009 UT 1
    , ¶ 6, 
    201 P.3d 982
     (relying on the fact that “[t]he legislature
    clearly knew how to identify items that could be excluded from the
    tax base” as evidence of intent not to exclude the item in question);
    State Farm Mut. Auto. Ins. Co. v. Clyde, 
    920 P.2d 1183
    , 1187 (Utah
    1996) (concluding that where the legislature used the term “in loco
    parentis” in unrelated statutes but omitted such language in the
    relevant statute, that omission indicated an “intentional rejection
    of the concept of de facto parent or guardian in this context”).
    ¶40 Furthermore, in Utah, unlike the other jurisdictions
    referenced by the School District, our supreme court has instructed
    that the “natural result” standard does not require an employee “to
    show that his original tragedy was the sole cause of a subsequent
    injury, but only that the initial work‐related accident was a
    contributing cause of his subsequent . . . injury.” Mountain States
    Casing Servs. v. McKean, 
    706 P.2d 601
    , 602 (Utah 1985) (per curiam);
    accord McKesson Corp. v. Labor Comm’n, 
    2002 UT App 10
    , ¶ 18, 
    41 P.3d 468
    . This precedent is inconsistent with the School District’s
    20110228‐CA                      22                
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    argument that Utah’s natural result test requires that the workplace
    accident constitute over 50% of the cause of the subsequent injuries.
    ¶41 Nor do we agree with the School District that a contributing
    cause test is too broad because “the employer will become the
    lifetime insurer of all subsequent non‐industrial injuries.” We
    considered a similar argument in Intermountain Health Care, Inc. v.
    Board of Review of the Industrial Commission, 
    839 P.2d 841
     (Utah Ct.
    App. 1992). There, an employee injured her back in an industrial
    accident that resulted in her missing several months of work and
    eventually being awarded temporary total disability benefits. 
    Id. at 842
    . Subsequently, the employee experienced a sudden, sharp pain
    in her back when she attempted to lift her four‐month‐old
    grandchild. 
    Id.
     at 842–43. The employee underwent disc fusion
    surgery and applied for additional disability benefits. 
    Id. at 843
    .
    The ALJ asked a medical panel to determine whether there was a
    “medically demonstrable causal connection” between the baby‐
    lifting incident and the prior industrial accident. 
    Id.
     The panel
    reported that the back surgery was 70% caused by the workplace
    injury and 30% caused by lifting the baby. 
    Id.
     The ALJ then
    awarded the employee benefits, and the Commission affirmed that
    decision. 
    Id.
    ¶42 On appeal, the employer claimed that the question to the
    panel of whether there was a “medically demonstrable causal
    connection” between the two events “adopted a substantially more
    liberal standard for causation than that adopted by the Utah
    Supreme Court.” 
    Id. at 844
    . According to the employer, the ALJ
    should have asked the panel whether the disc fusion surgery was
    the direct and natural result of the prior industrial accident. 
    Id.
     As
    in this case, the employer claimed that the ALJ’s question “would
    impose responsibility on an employer upon a finding of even the
    slightest relationship between the industrial accident and the injury
    in question.” 
    Id.
     In upholding the Commission’s decision, this court
    explained that “the medical panel is to give the Commission the
    benefit of its diagnosis relating to those matters that are
    particularly within the scope of its expertise.” 
    Id. at 845
     (citation
    and internal quotation marks omitted). In contrast, we instructed
    that the Commission retains the “final responsibility of making the
    20110228‐CA                      23                
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    decision as to the issues” in the administrative proceeding and “the
    medical panel may not take over this responsibility.” 
    Id.
     (citation
    and internal quotation marks omitted). We reasoned that whether
    the question to the panel incorporates the correct standard of legal
    causation is inconsequential because once the panel opines on the
    medical relationship between the two events, it is for the
    Commission to determine whether the recent injuries are the
    natural result of the prior industrial accident.17 
    Id.
     That “narrower
    issue of legal causation” is properly determined by the ALJ
    through “an analysis of the facts surrounding the subsequent
    injury and analysis of the connection between the subsequent
    injury and the original compensable industrial injury.” Id. at 846.
    ¶43 In the present case, both the ALJ and the Commission relied
    on the conclusion of each of the medical experts that the prior
    workplace accident contributed to some extent to Mr. Brown’s 2007
    injuries. The ALJ then considered the facts surrounding the
    subsequent injury and the connection between that injury and the
    prior workplace accident. For example, the ALJ considered
    whether the leap onto Mr. Brown’s back was so causally significant
    that it negated the impact of the prior workplace accident. In doing
    so, the ALJ gave Dr. Knoebel’s amended report “very little
    evidentiary weight,” both because his attempt to incorporate legal
    conclusions into his opinion “overstep[ped] his boundary of
    expertise” and because even Dr. Knoebel acknowledged that the
    prior back surgery had left Mr. Brown with “residual L4–5 disc
    extrusion already narrowing the right neural fragment.” We agree
    that Dr. Knoebel’s attempt to offer a legal opinion on whether the
    2007 injuries were the natural result of the 2003 accident intruded
    into the purview of the ALJ and the Commission. See id. at 845.
    17. We also reasoned that even if “McKean requires more of a
    causal connection than the phraseology of the inquiry to the
    medical panel may suggest,” the panel’s assessment that the back
    surgery was 70% the result of the prior industrial accident
    dispelled any concern about the significance of the medical
    connection. Intermountain Health Care, Inc. v. Board of Review of the
    Indus. Comm’n, 
    839 P.2d 841
    , 846 (Utah Ct. App. 1992).
    20110228‐CA                      24               
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    Both the ALJ and the Commission combined the medical causation
    information provided by the experts—including Dr. Knoebel’s
    opinion that the 2003 accident was a “very minor contributing
    cause”—with an examination of the facts and circumstances to
    arrive at the conclusion that Mr. Brown had proved by a
    preponderance of the evidence that the 2007 injuries were the
    natural result of the prior industrial accident and his resultant L4–5
    damage.
    ¶44 The Commission was correct in determining that the present
    facts fall within the natural result legal standard. Despite
    noninvasive techniques and surgery, Mr. Brown continued to
    complain of lower back pain during the years after the workplace
    accident. Indeed, only five months before the 2007 festival incident,
    an MRI revealed both left‐sided and right‐sided abnormalities at
    the L4–5 region of Mr. Brown’s spine. Dr. Knoebel agreed that the
    2007 MRI, taken before the festival incident, showed lingering
    damage to both sides of the L4–5 region of Mr. Brown’s back.
    Similarly, Dr. Snook, Dr. Kabins, and Dr. Knoebel all concluded
    that the 2003 accident was a contributing cause of the injuries he
    suffered when the third party jumped on him in 2007. Finally, there
    was no evidence that Mr. Brown would have suffered the same
    injuries in 2007 if he had not injured the same region of his back in
    the 2003 industrial accident. Accordingly, the Commission was
    correct in concluding that Mr. Brown is entitled to additional
    benefits pursuant to the Act under the natural result causation
    standard.
    CONCLUSION
    ¶45 The School District failed to preserve its argument that, in
    this case, the Commission should have applied the causation
    standard mandated by Allen v. Industrial Commission, 
    729 P.2d 15
    (Utah 1986). Likewise, we accept the Commission’s factual findings
    because the School District failed to challenge them properly. There
    is substantial evidence in the record as a whole to support the ALJ’s
    finding that there was no conflict among the physicians concerning
    medical causation and, therefore, the Commission’s decision that
    20110228‐CA                      25                
    2013 UT App 205
    Washington Cnty. Sch. Dist. v. Labor Comm’n
    the ALJ was not required to submit the case to a medical panel
    does not exceed the bounds of reason and rationality. Finally, the
    Commission correctly applied the Act to the facts of this case to
    reach its conclusion that Mr. Brown’s 2007 injuries were a natural
    result of the 2003 compensable workplace injury. For these reasons,
    we decline to disturb the Commission’s decision.
    20110228‐CA                     26               
    2013 UT App 205