Moss v. C&A Indus. , 915 N.W.2d 615 ( 2018 )


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  • Nebraska Supreme Court Online Library
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    05/08/2018 09:09 AM CDT
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    MOSS v. C&A INDUS.
    Cite as 
    25 Neb. Ct. App. 877
    Willie Moss, also known as Lamont K irkland,
    appellee, v. C&A I ndustries, doing business
    as Aurstaff Temporary Agency,
    employer, appellant.
    ___ N.W.2d ___
    Filed May 8, 2018.     No. A-17-465.
    1.	 Evidence: Records: Appeal and Error. A bill of exceptions is the only
    vehicle for bringing evidence before an appellate court; evidence which
    is not made a part of the bill of exceptions may not be considered.
    2.	 Judicial Notice: Records. Papers requested to be judicially noticed
    must be marked, identified, and made a part of the record.
    3.	 Judicial Notice: Appeal and Error. The trial court’s ruling should state
    and describe what it is the court is judicially noticing. Otherwise, a
    meaningful review of its decision is impossible.
    4.	 Workers’ Compensation: Appeal and Error. Pursuant to Neb. Rev.
    Stat. § 48-185 (Cum. Supp. 2016), an appellate court may modify,
    reverse, or set aside a Workers’ Compensation Court decision only when
    (1) the compensation court acted without or in excess of its powers; (2)
    the judgment, order, or award was procured by fraud; (3) there is not
    sufficient competent evidence in the record to warrant the making of the
    order, judgment, or award; or (4) the findings of fact by the compensa-
    tion court do not support the order or award.
    5.	 ____: ____. Findings of fact made by the Workers’ Compensation Court
    have the same force and effect as a jury verdict and will not be set aside
    unless clearly erroneous.
    6.	 Workers’ Compensation: Evidence: Appeal and Error. When testing
    the sufficiency of the evidence to support findings of fact made by the
    Workers’ Compensation Court trial judge, the evidence must be consid-
    ered in the light most favorable to the successful party and the success-
    ful party will have the benefit of every inference reasonably deducible
    from the evidence.
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    7.	 Workers’ Compensation: Appeal and Error. An appellate court is
    obligated in workers’ compensation cases to make its own determina-
    tions as to questions of law.
    8.	 Workers’ Compensation: Proof. To obtain a modification of an award,
    an applicant must prove, by a preponderance of evidence, that the
    increase or decrease in incapacity was due solely to the injury resulting
    from the original accident.
    9.	 ____: ____. To obtain a modification of a prior award, the applicant
    must prove there exists a material and substantial change for the bet-
    ter or worse in the condition—a change in circumstances that justifies
    a modification, distinct and different from the condition for which the
    adjudication had been previously made.
    10.	 Workers’ Compensation. Whether an applicant’s incapacity has
    increased under the terms of Neb. Rev. Stat. § 48-141 (Reissue 2010) is
    a finding of fact.
    11.	 Workers’ Compensation: Expert Witnesses. Although a claimant’s
    medical expert does not have to couch his or her opinion in the magic
    words “reasonable medical certainty” or “reasonable probability,” the
    opinion must be sufficient to establish the crucial causal link between
    the claimant’s injuries and the accident occurring in the course and
    scope of the claimant’s employment.
    12.	 Expert Witnesses: Physicians and Surgeons: Appeal and Error. An
    appellate court examines the sufficiency of a medical expert’s statements
    from the expert’s entire opinion and the record as a whole.
    13.	 Workers’ Compensation: Expert Witnesses: Physicians and
    Surgeons. The Workers’ Compensation Court is the sole judge of the
    credibility and weight to be given medical opinions, even when the
    health care providers do not give live testimony.
    14.	 ____: ____: ____. Resolving conflicts within a health care provider’s
    opinion rests with the Workers’ Compensation Court, as the trier
    of fact.
    15.	 Workers’ Compensation: Evidence: Appeal and Error. If the record
    contains evidence to substantiate the factual conclusions reached by
    the trial judge in workers’ compensation cases, an appellate court is
    precluded from substituting its view of the facts for that of the compen-
    sation court.
    16.	 Workers’ Compensation: Proof. To establish a change in incapacity
    under Neb. Rev. Stat. § 48-141 (Reissue 2010), an applicant must show
    a change in impairment and a change in disability.
    17.	 Workers’ Compensation: Words and Phrases. In a workers’ compen-
    sation context, impairment refers to a medical assessment, whereas dis-
    ability relates to employability.
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    MOSS v. C&A INDUS.
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    25 Neb. Ct. App. 877
    Appeal from the Workers’ Compensation Court: Daniel
    R. Fridrich, Judge. Reversed and remanded for further
    proceedings.
    Jill Hamer Conway, of Prentiss Grant, L.L.C., for appellant.
    Terrence J. Salerno and Danny C. Leavitt for appellee.
    Moore, Chief Judge, and Inbody and Bishop, Judges.
    Moore, Chief Judge.
    INTRODUCTION
    C&A Industries, doing business as Aurstaff Temporary
    Agency (the Appellant), appeals from the order of the Nebraska
    Workers’ Compensation Court which entered a further award
    of benefits to Willie Moss, also known as Lamont Kirkland
    (Kirkland). For the reasons set forth herein, we reverse, and
    remand for further proceedings.
    BACKGROUND
    Kirkland was 60 years old at the time of the second modi-
    fication trial in February 2017. In July 2008, he was working
    for the Appellant, a temporary agency, and was employed
    as a laborer. On July 23, while engaged in the duties of his
    employment, he suffered multiple cuts and abrasions to his
    legs and arms, trauma to his head, a broken tooth, cervical
    and lumbar strain, trochanteric bursitis, and a medial meniscus
    tear and strain of the left knee as a result of an accident when
    a load of “angle iron” fell from an overhead crane onto him.
    He has not returned to work in any capacity since July 2008.
    Kirkland underwent conservative treatment which alleviated
    some symptoms, but when surgery was recommended for his
    left knee injury, the Appellant refused to authorize further
    medical treatment.
    Kirkland sought workers’ compensation benefits, filing a
    petition in the compensation court on January 28, 2009. He
    alleged that on July 23, 2008, he sustained injuries in an
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    accident arising out of and in the course and scope of his
    employment with the Appellant. Specifically, he alleged that
    he was performing his regular job duties when a “Truss
    Angle” shifted and fell on him, causing him to sustain injuries
    to his “head, neck, back, arms, shoulders, knees, chest, legs
    and feet.”
    On December 10, 2009, the compensation court entered an
    award, finding Kirkland was injured as described above. At
    the time of the award, Kirkland remained temporarily totally
    disabled due to his left knee injury. The court noted medical
    evidence from Dr. Nicholas Steier (Kirkland’s family physi-
    cian) and Dr. Mark Pitner (an orthopedic surgeon Kirkland
    was referred to by Steier), suggesting that “the failure to
    address the left knee injury ha[d] caused a gait disturbance
    which aggravated [Kirkland’s] low back and hip which ha[d]
    become symptomatic.” The court awarded temporary total dis-
    ability, as well as future indemnity benefits, and it ordered the
    Appellant to pay certain medical expenses and future medical
    expenses reasonably necessary for evaluation and treatment of
    Kirkland’s multiple injuries, including but not limited to the
    recommended left knee arthroscopic surgery.
    Following the first trial, Kirkland received the arthroscopic
    procedure on his left knee, but as a postoperative complication,
    he developed deep vein thrombosis and a pulmonary embo-
    lism, which necessitated further hospitalization.
    On October 20, 2010, the Appellant filed a petition to
    modify in the compensation court, alleging that Kirkland had
    sustained a material and substantial change in his condition
    since the entry of the previous award that warranted a change
    to or reduction in benefits owed by the Appellant. Kirkland
    answered, denying the assertion of a change in his physical
    condition, and filed a counterclaim, alleging that the Appellant
    had failed to comply with the award and refused to pay many
    of his medical bills as they were incurred.
    The compensation court entered a further award on June
    17, 2011. The court noted that it had reviewed the medical
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    evidence as a whole and Kirkland’s testimony, which it found
    credible. The court found that the scheduled member injury to
    Kirkland’s left knee adversely affected him such that loss of
    permanent earning power could not be fairly assessed without
    considering the impact of the member injury upon his employ-
    ability. The court determined that Kirkland’s scheduled member
    injury and whole body injuries combined to render him perma-
    nently totally disabled. The court awarded permanent indem-
    nity benefits, including future indemnity benefits; ordered the
    Appellant to pay certain specified medical expenses; and also
    ordered the Appellant to pay future medical expenses reason-
    ably necessary for evaluation and treatment of Kirkland’s July
    2008 injuries.
    On October 12, 2016, Kirkland filed the petition to modify
    at issue in this appeal. He alleged that since entry of the award
    and further award, his “treating physicians have evaluated and
    treated [his] right knee and determined he requires a total knee
    arthroplasty.” He alleged a material and substantial increase in
    incapacity due solely to his compensable injuries, entitling him
    to modification of the previous awards. He sought an order
    requiring the Appellant to pay for “the treatment and medica-
    tion necessary to address [his] work related condition” and
    awarding him such workers’ compensation benefits to which
    he was entitled, including an award of penalties and attor-
    ney fees.
    The Appellant answered, denying that treatment of Kirkland’s
    right knee was compensable. The Appellant asserted that the
    previous awards did not find Kirkland sustained a work-
    related right knee injury and did not award future medical
    care for a right knee injury. The Appellant also alleged that
    Kirkland’s claims with regard to his right knee were barred by
    res judicata.
    Trial was held before the compensation court on February
    28, 2017. The court heard testimony from Kirkland and
    received various medical records and other documentary exhib-
    its offered by the parties.
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    [1-3] We note that the Appellant references a September
    2009 deposition of Steier in its brief on appeal. This deposi-
    tion was not an exhibit offered directly as evidence at the
    current modification trial and was presumably offered at a
    prior trial. At the current trial, the Appellant asked the com-
    pensation court to take judicial notice of all exhibits offered
    and received at both prior trials and also asked the court to
    take judicial notice of specific pages from certain, specific,
    and previously offered exhibits. The court took judicial notice
    as requested by the Appellant, but the only judicially noticed
    exhibits included in the record on appeal were those exhib-
    its from which Appellant requested the court to take judicial
    notice of specific pages. Steier’s 2009 deposition was not one
    of those exhibits. A bill of exceptions is the only vehicle for
    bringing evidence before an appellate court; evidence which
    is not made a part of the bill of exceptions may not be con-
    sidered. In re Estate of Radford, 
    297 Neb. 748
    , 
    901 N.W.2d 261
    (2017). Papers requested to be judicially noticed must be
    marked, identified, and made a part of the record. 
    Id. The trial
    court’s ruling should state and describe what it is the court is
    judicially noticing. 
    Id. Otherwise, a
    meaningful review of its
    decision is impossible. 
    Id. Because Steier’s
    2009 deposition
    was not included in the record, we are unable to review the
    Appellant’s assertions with respect to it.
    At the February 2017 modification trial, Kirkland testified
    about his injuries and the history of his treatment. Kirkland
    testified that the level of pain in his right knee at the time of
    his accident and injury in July 2008 “started off as aching”
    and then his right knee condition “developed until the point
    where [he] would have popping as well as almost the same
    type of procedure [sic] as [his] left knee.” Kirkland testified
    that although one of his treating doctors in 2008 noted he
    might have some damage to his right knee, no doctor told him
    prior to 2016 that he needed surgery on his right knee. He also
    noted that at some point, Pitner told him, “‘Your knee is start-
    ing to wear down from the constant use of it.’” Pitner further
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    told Kirkland, “‘Because you’re putting more strain on it by
    using it as your only support . . . it’s wearing down.’”
    Kirkland underwent left knee replacement surgery in April
    2016. Kirkland indicated that since his left knee replacement
    surgery, he has been relying primarily upon his right leg
    when he walks. He testified further that as he went through
    rehabilitation following his left knee replacement surgery, he
    favored his right knee “to hold [him] up” and that “it got to
    the point” where Pitner recommended surgery on the right
    knee. Kirkland testified that he wanted to undergo that sur-
    gery and that he was asking the court to order payment for
    that surgery.
    Kirkland was on pain and antidepressant medication at the
    time of trial. Despite having formerly been “a world class
    fighter” and “involved in that kind of activity,” he had never
    been on pain medication or antidepressants prior to his July
    2008 work accident and had only been to the hospital once “to
    get an examination to fight against [sic] foreign countries.”
    Kirkland testified that he had not suffered any new injuries
    since 2008.
    Kirkland’s trial testimony is consistent with his answers to
    interrogatories, served on the Appellant in March 2009, and
    his testimony in a January 2017 deposition that were received
    into evidence at trial. In Kirkland’s interrogatory answers, he
    stated that he sustained injuries to “his head, neck, back, arms,
    shoulders, knees, chest, legs and feet” in the July 2008 acci-
    dent. (Emphasis supplied.) In his deposition, Kirkland testified
    he had right knee pain on the day of the accident. He testified
    further that he showed both of his knees to his work supervi-
    sor on the Monday following the accident and that his right
    knee was swollen. Kirkland testified that he continued to have
    pain in his right knee but that it was “overshadowed” by the
    pain in his left knee.
    Kirkland’s trial testimony is also supported by the medical
    evidence received at trial, and although we have not noted
    every such complaint in our analysis, the medical evidence
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    reflects continuing complaints of right knee pain and/or pop-
    ping since the time of the July 2008 accident. For example, in
    2008, Kirkland complained of bilateral knee popping during
    aquatic physical therapy on August 22. He complained of right
    knee pain during a defense medical examination by a doc-
    tor on December 9, but the doctor found the examination of
    Kirkland’s knee otherwise “not remarkable” with “no specific
    physical findings.”
    The medical records show further complaints about
    Kirkland’s right knee in 2009 and 2010. In January 2009,
    Pitner recorded that Kirkland complained of right knee pain.
    During a visit to the “Rejuvenation Center” in March, Kirkland
    noted that his right knee “pops.” In October 2010, when he
    visited another medical clinic, Kirkland marked both his left
    and right knee on a pain diagram.
    Kirkland’s complaints of right knee pain continued in 2011
    and 2012. He complained of bilateral knee pain to Pitner in
    July 2011 and was diagnosed with “[b]ilateral degenerative
    arthritis of the knees.” In his notes from that visit, Pitner
    stated, “The right knee really was not included in [Kirkland’s]
    previous work comp injury and was not a part of discussion
    today. [Kirkland] does know, however, that it is fairly worn as
    well.” Pitner discussed “knee replacement” with Kirkland at
    that time, but it is unclear from Pitner’s notes whether they dis-
    cussed replacement of both knees or just the left knee. Pitner’s
    notes do show, however, that Kirkland’s left knee bothered him
    more at that time. Pitner administered cortisone injections into
    both of Kirkland’s knees in September 2012 due to his com-
    plaints of bilateral knee pain.
    Kirkland continued to treat with Pitner from late 2012
    through April 2016 when Pitner performed replacement sur-
    gery on Kirkland’s left knee. During that time, Kirkland com-
    plained of bilateral knee pain. In September 2013, Pitner again
    administered cortisone injections into both of Kirkland’s knees.
    Pitner also injected both knees on various occasions between
    April 2014 and January 2016.
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    On April 11, 2016, Pitner performed a “left total knee
    arthroplasty” on Kirkland. During a followup visit 2 weeks
    after the left knee surgery, Kirkland stated he wanted to “begin
    working on getting prior authorization through workmen’s
    compensation for the right total knee arthroplasty.” Pitner
    administered a cortisone injection to Kirkland’s right knee at
    that visit.
    Causation opinions from three doctors concerning Kirkland’s
    right knee were received into evidence at trial. The first cau-
    sation opinion is from Dr. Erik Otterberg, who conducted
    an independent medical examination regarding Kirkland’s
    right knee on September 2, 2016. In his report, Otterberg
    responded to certain questions. As to whether Kirkland’s right
    knee injury was a preexisting condition, related to the July
    2008 accident, or caused by a subsequent condition or acci-
    dent, Otterberg responded that he did not have any documen-
    tation of any preexisting right knee problems. He found no
    mention of the right knee problem initially after the accident,
    but noted the medical examination of Kirkland in December
    2008, in which a doctor evaluated Kirkland’s right knee
    and noticed some right knee pain. With regard to causation,
    Otterberg stated, “With [Kirkland’s] denying right knee prob-
    lems beforehand and no documentation of pre-existing right
    knee conditions, I would conclude that this could be related
    to the July 23, 2008 event with some probability.” In response
    to the question of whether Kirkland’s right knee condition
    represented a material and substantial increase in incapac-
    ity “since June 17, 2011 due solely to the injury of July 23,
    2008,” Otterberg stated, “The progression of the right knee
    pain and arthritis would progress from the time of the initial
    event to current.” And, as to whether any right knee replace-
    ment surgery would be reasonably medically necessary as a
    result of the July 2008 accident or due to a preexisting condi-
    tion, regardless of the July 2008 accident, he stated, “Again,
    with [Kirkland’s] denying having any knee problems prior to
    this and with no documentation of treatment for right knee
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    problems before this, I think that it is somewhat reasonable to
    equate his need for a [right] knee replacement with the event
    on July 23, 2008.”
    The next causation opinions are from Steier, who also treated
    Kirkland during the period when Pitner was treating Kirkland.
    On September 21, 2016, Steier wrote in a letter addressed “To
    Whom It May Concern”:
    Kirkland is a patient under my care who suffered a work
    comp injury on July 23, 2008. Since that time he has had
    neck pain, back pain, shoulder pain and bilateral hip and
    knee pain. He underwent left total knee arthroplasty. He
    continues with treatment for his neck, back, shoulder and
    hip pain. He was scheduled for right total knee arthro-
    plasty, but apparently work comp is questioning whether
    this right knee pain is work related. I reviewed his medi-
    cal records. I see documentation in the medical records
    that he started developing right knee pain as far back as
    August 9, 2010. It is reasonable to assume and one could
    argue that the right knee pain developed as a direct result
    of his work comp injuries as his gait and weightbearing
    changed which may have stressed his right knee.
    Then on January 26, 2017, Steier issued a checkbox type of
    report in which he opined “with a reasonable degree of medi-
    cal probability” that Kirkland’s injuries to his neck, back, head,
    right knee, and left knee and his hip pain were the result of
    the work-related accident of 2008; that the medical care and
    treatment he rendered to Kirkland as a result of these injuries
    was reasonable and necessary; that Kirkland was at maximum
    medical improvement for all injuries except his right knee
    for which surgery was still pending; and that Kirkland would
    need future medical care and treatment as a result of all of
    these injuries.
    The final relevant causation opinion is found in a February
    2, 2017, letter Pitner wrote to Kirkland’s counsel:
    This response is . . . to your letter faxed, dated 01/26/17,
    requesting a narrative report with regard to causality
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    and a potential Worker’s Compensation case for the left
    [sic] knee. [Kirkland] has been seen in the office and
    treated for an injury to the right knee, which was deter-
    mined to be related to an injury at work. I have also
    treated him for progressive degenerative disease of the
    left knee and made the recommendation with proceeding
    with joint replacement.
    On March 29, 2017, the compensation court entered a fur-
    ther award of benefits to Kirkland. The court first addressed
    the Appellant’s assertion that Kirkland’s claim was barred by
    res judicata. The court noted Kirkland’s claims of right knee
    injury in the 2008 accident and evidence about Kirkland’s
    right knee injury. The court also noted that the original award
    did not find that Kirkland suffered a right knee injury in the
    2008 accident. Because Kirkland claimed to have injured
    his right knee in the 2008 accident and because an injury to
    Kirkland’s right knee was not included in the 2009 award,
    the court determined that Kirkland was barred from reliti-
    gating that issue pursuant to the doctrine of res judicata or
    issue preclusion.
    The compensation court determined, however, that Kirkland
    was not precluded from seeking modification of the original
    award. The court stated that Kirkland could recover benefits
    for a right knee injury “if he can prove his right knee injury/
    condition stems from his compensable left leg injury, low
    back injury, neck injury or hip injury” and if he proves the
    requirements for a modification under Neb. Rev. Stat. § 48-141
    (Reissue 2010). The court outlined Kirkland’s testimony and
    the medical evidence about Kirkland’s right knee issues, and it
    noted and analyzed the causation opinions of Pitner, Otterberg,
    and Steier.
    Given the detail of the compensation court’s analysis of the
    causation opinions, we reproduce it here as follows:
    The opinions [of Pitner, Otterberg, and Steier] are the
    extent of the “causation” opinions offered at trial. Not
    one doctor opined [Kirkland’s] right knee condition was
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    unrelated to the accident on July 23, 2008, although there
    are problems with each of the aforementioned opinions.
    The Court will address each opinion individually.
    Initially, . . . Pitner’s opinion appears to causally
    relate [Kirkland’s] right knee injury to the accident on
    July 23, 2008 based upon the theory that his right knee
    was actually hurt in the accident. If that is the case, that
    opinion is legally irrelevant as this Court has concluded
    that [Kirkland] is barred from relitigating that issue. In
    complete candor, however, it is unclear how . . . Pitner
    relates [Kirkland’s] right knee problem to the accident on
    July 23, 2008. That lack of clarity does not aid [Kirkland]
    given it is [Kirkland’s] burden to prove his right knee
    injury was solely caused by the injuries suffered to either
    his hip, low back, neck or left knee. This Court concludes
    that . . . Pitner’s opinion does not carry [Kirkland’s] bur-
    den of proof given the lack of clarity and certainty about
    what exactly his opinion is.
    The same criticism can be lodged towards . . .
    Otterberg’s opinion. He does not identify how [Kirkland’s]
    right knee injury is causally related to the accident on
    July 23, 2008, but he too seems to opine the right knee
    was initially injured in the accident on July 23, 2008.
    That opinion would also be legally irrelevant given the
    Court’s ruling on res judicata. Furthermore . . . Otterberg
    employs the word “could” when providing his opinion,
    and it is well recognized that expert medical testimony
    based upon “could,” “may,” or “possibly” lacks the defi-
    niteness required to support an award from the Workers’
    Compensation Court. . . . Consequently, the Court finds
    that . . . Otterberg’s opinion is insufficient to carry
    [Kirkland’s] burden.
    . . . Steier’s opinion has some of the same problems
    as those of . . . Otterberg. . . . Steier also uses the
    words “could” and “may” when stating his opinion. On
    the other hand, he at least identifies that [Kirkland’s]
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    right knee problem[] was caused by [Kirkland’s] altered
    weight bearing and gait. Moreover, . . . Steier cleaned
    up the deficiencies created by using the words “could”
    and “may” by issuing his follow-up check box report in
    which he stated [Kirkland’s] right knee injury was the
    result of the accident on July 23, 2008. Ultimately, the
    Court finds . . . Steier’s opinion to be legally sufficient to
    carry [Kirkland’s] burden of proof and persuasion partic-
    ularly when considering the Nebraska Supreme Court’s
    decision in [Hohnstein v. W.C. Frank], 
    237 Neb. 974
    ,
    
    468 N.W.2d 597
    (1991). In [Hohnstein], the Nebraska
    Supreme Court affirmed the trial court’s modification of
    an award where the only expert opinion to support the
    claimant’s case was one in which [the doctor] testified
    that the claimant had problems after the fall “and one
    would assume they were causally related.” [Id.] at 
    983, 468 N.W.2d at 604
    .
    The Court finds [Kirkland] suffered a material and
    substantial change in his physical condition for the worse
    due solely to the injuries suffered by him in the accident
    on July 23, 2008. The Court finds [Kirkland’s] right knee
    injury was caused by his altered gait and weight bearing
    caused by the original injuries suffered in the accident
    on July 23, 2008. The Court relies upon the opinion of
    . . . Steier to so find.
    The compensation court ordered the Appellant to pay for the
    right knee total replacement recommended by Pitner and for
    all followup care necessitated by the surgery. The court also
    ordered the Appellant to pay certain medical bills and denied
    Kirkland’s request for attorney fees. The Appellant subse-
    quently perfected this appeal.
    ASSIGNMENTS OF ERROR
    The Appellant asserts that the compensation court erred
    in (1) finding Kirkland experienced a material and substan-
    tial change for the worse in his right knee condition distinct
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    and different since the prior trials and awards due solely to
    his July 2008 accident and (2) adopting medical opinions in
    support of its ruling that did not meet the required burden
    of proof.
    STANDARD OF REVIEW
    [4-7] Pursuant to Neb. Rev. Stat. § 48-185 (Cum. Supp.
    2016), an appellate court may modify, reverse, or set aside
    a Workers’ Compensation Court decision only when (1) the
    compensation court acted without or in excess of its powers;
    (2) the judgment, order, or award was procured by fraud; (3)
    there is not sufficient competent evidence in the record to war-
    rant the making of the order, judgment, or award; or (4) the
    findings of fact by the compensation court do not support the
    order or award. Hintz v. Farmers Co-op Assn., 
    297 Neb. 903
    ,
    
    902 N.W.2d 131
    (2017). Findings of fact made by the Workers’
    Compensation Court have the same force and effect as a jury
    verdict and will not be set aside unless clearly erroneous. 
    Id. When testing
    the sufficiency of the evidence to support find-
    ings of fact made by the Workers’ Compensation Court trial
    judge, the evidence must be considered in the light most favor-
    able to the successful party and the successful party will have
    the benefit of every inference reasonably deducible from the
    evidence. 
    Id. An appellate
    court is obligated in workers’ com-
    pensation cases to make its own determinations as to questions
    of law. Kohout v. Bennett Constr., 
    296 Neb. 608
    , 
    894 N.W.2d 821
    (2017).
    ANALYSIS
    The Appellant asserts that the compensation court erred in
    finding Kirkland experienced a material and substantial change
    for the worse in his right knee condition distinct and different
    since the prior trials and awards due solely to his July 2008
    accident and adopting medical opinions in support of its ruling
    that did not meet the required burden of proof.
    Under § 48-141, an award of the compensation court may
    be modified:
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    (1) At any time by agreement of the parties with the
    approval of the Nebraska Workers’ Compensation Court;
    or (2) if the parties cannot agree, then at any time after
    six months from the date of the agreement or award, an
    application may be made by either party on the ground
    of increase or decrease of incapacity due solely to the
    injury . . . .
    [8-10] To obtain a modification of an award, an applicant
    must prove, by a preponderance of evidence, that the increase
    or decrease in incapacity was due solely to the injury resulting
    from the original accident. Rader v. Speer Auto, 
    287 Neb. 116
    ,
    
    841 N.W.2d 383
    (2013). To obtain a modification of a prior
    award, the applicant must prove there exists a material and
    substantial change for the better or worse in the condition—a
    change in circumstances that justifies a modification, distinct
    and different from the condition for which the adjudication had
    been previously made. 
    Id. Whether an
    applicant’s incapacity
    has increased under the terms of § 48-141 is a finding of fact.
    Rader v. Speer 
    Auto, supra
    .
    The Appellant argues that because the record shows Kirkland
    has had ongoing right knee pain, right knee popping, and an
    altered gait since the time of the July 2008 accident, he failed
    to prove that his right knee condition at the time of the 2017
    trial was distinct and different from and materially worse than
    his condition at the time of the prior trials. The Appellant also
    argues that Steier’s causation opinion, which the court relied
    on, was insufficient.
    [11-14] Although a claimant’s medical expert does not have
    to couch his or her opinion in the magic words “reasonable
    medical certainty” or “reasonable probability,” the opinion
    must be sufficient to establish the crucial causal link between
    the claimant’s injuries and the accident occurring in the course
    and scope of the claimant’s employment. Damme v. Pike
    Enters., 
    289 Neb. 620
    , 
    856 N.W.2d 422
    (2014). An appellate
    court examines the sufficiency of a medical expert’s statements
    from the expert’s entire opinion and the record as a whole.
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    Id. The Workers’ 
    Compensation Court is the sole judge of
    the credibility and weight to be given medical opinions, even
    when the health care providers do not give live testimony. 
    Id. Resolving conflicts
    within a health care provider’s opinion
    rests with the Workers’ Compensation Court, as the trier of
    fact. 
    Id. The record
    shows that Kirkland has complained of right
    knee pain and popping since the July 2008 accident, but that
    his left knee symptoms were initially worse. The record also
    shows that after Kirkland’s left knee replacement surgery, he
    relied primarily on his right knee to support him, stressing it
    to the point that Pitner recommended right knee replacement
    surgery in 2016. The record shows that prior to Pitner’s recom-
    mendation, no doctor had recommended replacement surgery
    for Kirkland’s right knee.
    The compensation court relied on Steier’s causation opin-
    ions to find Kirkland suffered a material and substantial
    change in his physical condition for the worse due solely to
    the injuries suffered by him in the 2008 accident. The court
    specifically found that “[Kirkland’s] right knee injury was
    caused by his altered gait and weight bearing caused by the
    original injuries.”
    [15] If the record contains evidence to substantiate the fac-
    tual conclusions reached by the trial judge in workers’ com-
    pensation cases, an appellate court is precluded from substitut-
    ing its view of the facts for that of the compensation court.
    Hynes v. Good Samaritan Hosp., 
    291 Neb. 757
    , 
    869 N.W.2d 78
    (2015). Considering the evidence in the light most favorable
    to Kirkland and examining Steier’s statements from his col-
    lective opinions and the record as a whole, we find the record
    supports the compensation court’s determination that Kirkland
    suffered a material and substantial change in his physical con-
    dition for the worse due solely to the injuries he suffered in
    the July 2008 accident. The injury to Kirkland’s right knee, at
    the time of the instant modification, was distinct and different
    from the injuries compensated in the prior awards. The fact
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    that Kirkland complained of some right knee issues before the
    prior awards does not preclude this finding as the condition of
    the right knee at the time of the instant modification had pro-
    gressed to require a total replacement.
    [16,17] However, our analysis under § 48-141 does not end
    there. To establish a change in incapacity under § 48-141, an
    applicant must show a change in impairment and a change in
    disability. Rader v. Speer Auto, 
    287 Neb. 116
    , 
    841 N.W.2d 383
    (2013); Jurgens v. Irwin Indus. Tool Co., 
    20 Neb. Ct. App. 488
    ,
    
    825 N.W.2d 820
    (2013); Bronzynski v. Model Electric, 14 Neb.
    App. 355, 
    707 N.W.2d 46
    (2005). A change in impairment
    refers to the employee’s physical condition or health status.
    See, Rader v. Speer 
    Auto, supra
    ; Bronzynski v. Model 
    Electric, supra
    . Disability, on the other hand, is defined in terms of
    employability and earning capacity rather than loss of bodily
    function. See, Rader v. Speer 
    Auto, supra
    ; Wolfe v. American
    Community Stores, 
    205 Neb. 763
    , 
    290 N.W.2d 195
    (1980);
    Bronzynski v. Model 
    Electric, supra
    . In a workers’ compen-
    sation context, impairment refers to a medical assessment,
    whereas disability relates to employability. Rader v. Speer
    
    Auto, supra
    ; Jurgens v. Irwin Indus. Tool 
    Co., supra
    .
    In Rader v. Speer 
    Auto, supra
    , the employee submitted
    evidence showing that he had experienced a slight increase
    in his loss of earning power since an earlier award. The trial
    court found that although the employee experienced an addi-
    tional loss of earning power, this loss of earning power alone
    did not serve to establish a material and substantial change
    for the worse in her condition as required by § 48-141(2). On
    appeal, the Nebraska Supreme Court affirmed the denial of
    modification under § 48-141. The Supreme Court first noted
    that although there were competing loss of earning power
    opinions, the trial judge was entitled to accept the opinion
    of one expert over another. The Supreme Court then noted,
    however, that with respect to impairment, there was expert
    evidence to show that the employee did not experience a mate-
    rial or substantial change in her condition. The Supreme Court
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    concluded that although the finding of a modest increase in
    the employee’s loss of earning capacity supported a worsen-
    ing of disability, the record as a whole failed to establish a
    worsening of impairment, and that thus, the trial court’s find-
    ing that the employee did not prove an increase in incapacity
    under § 48-141 was not clearly wrong.
    In this appeal, we are presented with the opposite scenario
    than that existing in Rader v. Speer 
    Auto, supra
    . Here, the
    trial court found a substantial change in Kirkland’s physi-
    cal condition; in other words, a worsening of his impair-
    ment. However, the trial court did not address the second
    prong of § 48-141—a change in disability. Presumably, this
    prong was not addressed below because Kirkland was already
    found to be permanently totally disabled in the 2011 fur-
    ther award. Nevertheless, we cannot ignore the requirement
    that an employee show both a change in impairment and a
    change in disability before being entitled to a modification
    under § 48-141. Nor are we aware of any exceptions under
    § 48-141 to the requirement of proving an increase in dis-
    ability in cases where a worker is already at permanent total
    disability. Obviously, there was no evidence adduced in this
    case regarding an increase in disability because Kirkland was
    already found to be totally disabled. Because Kirkland failed
    to establish a worsening of disability, it was clear error for the
    trial court to find that he suffered an increase in incapacity
    under § 48-141.
    Although the trial court erred in finding an increase in inca-
    pacity to support modification under § 48-141, this does not
    necessarily end our inquiry. In his petition to modify, Kirkland
    alleged a material and substantial change in his condition
    to support modification under § 48-141, but he also alleged
    that the 2011 further award provided for future medical care
    and treatment, that he now required a total knee arthroplasty,
    and that this change was due to his compensable injuries.
    The relief sought in the petition was an order requiring the
    Appellant to comply with the 2011 further award by paying
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    for the treatment necessary to address his work-related condi-
    tion—the right knee total arthroplasty. This is the relief that the
    trial court granted, albeit under a § 48-141 finding, which we
    have determined to be in error.
    An award of future medical treatment may include treat-
    ment which becomes reasonably necessary only after entry
    of the award. See, Sellers v. Reefer Systems, 
    283 Neb. 760
    ,
    
    811 N.W.2d 293
    (2012); Pearson v. Archer-Daniels-Midland
    Milling Co., 
    282 Neb. 400
    , 
    803 N.W.2d 489
    (2011). The ques-
    tion becomes whether the requested treatment is necessary
    to treat the employee’s work-related injuries. See Rodriguez
    v. Hirschbach Motor Lines, 
    270 Neb. 757
    , 
    707 N.W.2d 232
    (2005). If the necessity of the treatment has been established,
    it may be compensable notwithstanding the fact that it was not
    specifically included in the award of future medical benefits.
    See Sellers v. Reefer 
    Systems, supra
    .
    The foregoing cases regarding future medical treatment are
    generally premised upon Neb. Rev. Stat. § 48-120 (Cum. Supp.
    2016) (award of medical expenses) rather than § 48-141. An
    employee may file a motion to compel payment of medical
    expenses following an award of future medical expenses. See
    Zitterkopf v. Aulick Indus., 
    16 Neb. Ct. App. 829
    , 
    753 N.W.2d 370
    (2008) (employee previously awarded permanent total dis-
    ability and future medical expenses obtained order compelling
    employer to pay for medication necessary to address reaction
    to pain medication).
    Here, although the compensation court found that Kirkland
    was precluded under the doctrine of res judicata from claiming
    he sustained an injury to his right knee in the 2008 accident, a
    finding that Kirkland does not challenge on appeal, the court
    further found that Kirkland was not precluded from proving
    that his right knee injury stems from the injuries found to be
    suffered in the 2008 accident. This finding is consistent with
    Sellers v. Reefer 
    Systems, supra
    ; Pearson v. Archer-Daniels-
    Midland Milling 
    Co., supra
    ; and Rodriguez v. Hirschbach
    Motor Lines, supra.
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    Because we conclude that the trial court erroneously pre-
    mised its award of medical bills for the right knee treatment
    upon § 48-141, we must reverse its decision. However, because
    the court did not specifically address Kirkland’s request to
    compel payment of these expenses under the further award,
    we remand the cause for further proceedings consistent with
    this opinion.
    CONCLUSION
    The compensation court was clearly wrong in finding that
    Kirkland suffered an increase in incapacity under § 48-141.
    We reverse the March 29, 2017, further award and remand the
    cause for further proceedings consistent with this opinion.
    R eversed and remanded for
    further proceedings.