Dierl v. Birkin , 2023 UT App 6 ( 2023 )


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    2023 UT App 6
    THE UTAH COURT OF APPEALS
    MARTIN J. DIERL,
    Appellant,
    v.
    BARRY M. BIRKIN,
    Appellee.
    Opinion
    No. 20210756-CA
    Filed January 20, 2023
    Third District Court, Silver Summit Department
    The Honorable Richard E. Mrazik
    No. 170500532
    David E. Ross II, Attorney for Appellant
    George T. Naegle, Cortney Kochevar, Kristina H.
    Ruedas, and Aaron T. Cunningham,
    Attorneys for Appellee
    JUDGE DAVID N. MORTENSEN authored this Opinion, in which
    JUDGES MICHELE M. CHRISTIANSEN FORSTER and RYAN M. HARRIS
    concurred.
    MORTENSEN, Judge:
    ¶1     After being injured at a ski resort, Martin J. Dierl
    underwent a CT scan, which was interpreted by Dr. Barry M.
    Birkin as being normal. In reality, the scan showed a tumor in
    Dierl’s brain. Some nine months later, after the tumor became
    symptomatic, Dierl learned of the tumor and had surgery to
    remove it. He suffered complications associated with the surgery,
    including permanent partial loss of vision and pituitary gland
    damage. Dierl sued Birkin for malpractice.
    ¶2    The district court granted summary judgment to Birkin
    because Dierl offered no admissible expert testimony establishing
    Dierl v. Birkin
    that Birkin’s failure to diagnose Dierl’s brain tumor nine months
    earlier proximately caused Dierl’s injuries. Dierl appeals, arguing
    that two expert witness affidavits should have been admitted to
    establish that Dierl sustained worse complications from surgery
    than he would have sustained if he had undergone surgery
    earlier. Because we conclude that the trial court appropriately
    exercised its discretion in excluding both affidavits, we affirm.
    BACKGROUND 1
    ¶3     Dierl was injured at a ski resort in Park City in February
    2015 and was taken by ambulance to an emergency room. The
    attending physician ordered a CT scan of Dierl’s brain. Birkin, a
    radiologist, interpreted Dierl’s CT brain scan and reported it as a
    “[n]egative CT,” stating that “[t]here are no intracranial masses.”
    ¶4      Beginning in November 2015, Dierl began experiencing
    “severe headaches, loss of balance, dizziness, speech impediment,
    memory loss[,] and loss of vision.” Dierl saw another doctor, who
    requested another CT brain scan, along with the records from the
    earlier brain scan. This doctor “informed Dierl that he had a large
    tumor in his brain and that was the reason for his suffering and
    loss of vision.” The doctor “also informed Dierl that the tumor
    was visible in the [earlier scan] and inquired whether [anyone
    had] informed him of this large brain tumor.” “Dierl stated that
    no one had told him” about the tumor after the earlier scan. In
    1. “In reviewing the district court’s grant of summary judgment,
    we view the facts in the light most favorable to [Dierl], as the
    nonmoving party.” Nelson v. 15 White Barn Drive LLC, 
    2022 UT App 106
    , n.3, 
    517 P.3d 1062
     (cleaned up).
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    December 2015, “Dierl underwent a right pterional craniotomy[2]
    for resection of the tumor.”
    ¶5      Dierl later filed a complaint for medical negligence against
    Birkin. Dierl alleged that Birkin “breached the standard of care in
    failing to diagnose Dierl’s brain tumor,” which “grew and placed
    pressure against his optic nerves and pituitary [gland].” Dierl
    further asserted that Birkin’s “breach of the standard of care [was]
    the proximate cause of Dierl’s injuries.”
    ¶6     Dierl timely disclosed a neurosurgeon (Neurosurgeon 1) as
    an expert witness. Birkin elected to take Neurosurgeon 1’s
    deposition, wherein Neurosurgeon 1 testified that the tumor grew
    by four millimeters—from twenty to twenty-four millimeters—
    over the course of the nine months following the February 2015
    CT scan. Neurosurgeon 1 also testified that had the tumor been
    detected in February 2015, it was “most likely that surgical
    treatment, direct craniotomy, would have been carried out,” as it
    had been in December 2015. Neurosurgeon 1 agreed that—
    regardless of the size of the tumor—this type of surgery carries
    certain risks, including “pituitary dysfunction, visual
    impairment, fluid leak, incomplete resection, [and] damage to the
    hypothalamus.” And Neurosurgeon 1 testified that following
    Dierl’s surgery, Dierl did in fact experience “an increase in his
    2. A craniotomy is “[a]n operation in which a small hole is made
    in the skull or a piece of bone from the skull is removed to show
    part of the brain. A craniotomy may be done to remove a brain
    tumor or a sample of brain tissue. . . . The piece of bone that is
    removed from the skull is usually put back in place after the
    surgery has been done.” Craniotomy, Nat’l Cancer Inst.,
    https://www.cancer.gov/publications/dictionaries/cancer-terms/
    def/craniotomy [https://perma.cc/HCF9-2H9C].
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    visual loss and panhypopituitarism.” 3 After this, the following
    exchange occurred:
    Q. Can you say, to a reasonable degree of medical
    probability, that . . . Dierl would not have
    experienced an increase in his visual loss or
    panhypopituitarism if the surgery had been
    performed in February 2015?
    A. Well, my opinion is that his risk of those
    [complications] would be less, had he had surgery
    in or around February 2015, as compared to
    December of 2015.
    Q. That’s fair. And my question is a little bit
    different, though. I understand that you—it’s your
    opinion that there is an increased risk there, but can
    you say, to a reasonable degree of medical
    probability, that had . . . Dierl undergone surgery in
    February of 2015, that he would not have had an
    increased visual loss?
    A. No.
    Q. And can you say, to a reasonable degree of
    medical probability, that had . . . Dierl undergone
    surgery in February of 2015, that he would not have
    experienced      complications        related    to
    panhypopituitarism?
    3. Panhypopituitarism is “[a] rare condition in which the pituitary
    gland stops making most or all hormones.” Panhypopituitarism,
    Nat’l Cancer Inst., https://www.cancer.gov/publications/dictiona
    ries/cancer-terms/def/panhypopituitarism [https://perma.cc/HH
    Q7-XS88].
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    A. No.
    ....
    Q. My question is, can you say, to a reasonable
    degree of medical probability, that had . . . Dierl
    undergone surgery in February of 2015, that he
    would not have the exact same injury to his vision
    today?
    A. No, because I would be—I would be speculating.
    Q. Okay. Same question in regards to his
    panhypopituitarism. . . . [H]ad the surgery been
    completed in February of 2015, can you say, to a
    reasonable degree of medical probability, that . . .
    Dierl would not have experienced the exact same
    injury to his pituitary gland that he experienced
    following his surgery in December of 2015?
    A. No.
    ¶7     Later, Birkin filed a motion for summary judgment,
    arguing that Dierl had “failed to establish a prima facie case of
    medical negligence against Birkin with expert testimony” because
    “Dierl’s only causation expert failed to establish that any delay in
    diagnosis of . . . Dierl’s tumor caused . . . Dierl actual damages.”
    Birkin further argued that Dierl’s “reliance upon merely an
    increased risk of surgical complication, but nothing more, does
    not amount to actual damages and cannot sustain a cause of action
    for medical negligence.”
    ¶8       Dierl opposed the motion and provided a new affidavit by
    Neurosurgeon 1 stating, “Affiant opines that due to the significant
    enlargement of the tumor from February 2015 to December 2015[,]
    . . . Dierl’s vision loss was greater than it would have been if the
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    surgery had been conducted in February or thereabouts instead
    of December 2015.” The affidavit continued, “Affiant states that
    based only on a February 2015 CT brain scan [without] contrast
    showing a 20 mm size tumor, he could not opine to any medical
    degree of certainty or probability as to any injury . . . Dierl may
    have sustained from a craniotomy in February 2015.”
    ¶9        About a month later, Dierl designated another
    neurosurgeon (Neurosurgeon 2) as a rebuttal expert witness and
    filed an affidavit from Neurosurgeon 2, which stated that
    Neurosurgeon 2 had “determined to a medical degree of certainty
    . . . [t]hat the failure of [Birkin] to diagnose the head CT scan and
    report the tumor in . . . Dierl’s brain on February 12, 2015[,]
    allowed the tumor to enlarge in the cephalo-caudal dimension
    from 15.8 mm to 23 mm by the time it was diagnosed in late
    November 2015.” Neurosurgeon 2 continued by stating, “[i]t is
    more likely than not that . . . Dierl suffered a worse outcome with
    respect to his vision than had the tumor been diagnosed and
    treated in February of 2015.” Neurosurgeon 2 also declared that
    the changes in the tumor “were significant and decreased the
    chances of a better outcome from surgery” and “[t]hat the failure
    of [Birkin] to diagnose the tumor in February 2015 contributed
    post tumor resection in December 2015 to a poor visual outcome
    and significantly enhanced the chance of permanent vision loss to
    . . . Dierl.”
    ¶10 Later, Dierl filed a motion under rule 56 of the Utah Rules
    of Civil Procedure asking the court to allow him “to cite to
    [Neurosurgeon 2’s] Affidavit in support of [Dierl’s] position that
    genuine issues of material fact exist.” See Utah R. Civ. P. 56(e)(1).
    In response to Birkin’s point that Dierl had failed to establish
    causation and damages as necessary for his prima facie case, Dierl
    stated, “Assuming arguendo . . . that [Dierl] has failed to properly
    support an assertion of fact, the Court should give [Dierl] an
    opportunity to support or address the fact.” Dierl’s disclosure of
    Neurosurgeon 2 had been timely for rebuttal expert witnesses but
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    had been made some three months after the deadline for
    disclosures of experts in Dierl’s case-in-chief.
    ¶11 The district court held oral arguments on both motions.
    After argument, the court gave an oral ruling indicating that the
    “deposition testimony from [Dierl’s] designated expert shows
    that [Dierl did] not have any expert testimony” asserting “that the
    delay in surgery from February 2015 to December 2015
    proximately caused any increase in . . . Dierl’s vision loss or any
    increase in his pituitary dysfunction or otherwise that the
    outcome would have been different had the surgery occurred
    earlier than it did.” Accordingly, the court reasoned, Dierl was
    “left with a lack of evidence of an essential element of [his] claim.”
    The court then considered Neurosurgeon 1’s affidavit testimony,
    stating that if it was admissible, it would create a “genuine issue
    of material fact as to whether [Dierl] can prove proximate cause.”
    However, the court relied on Webster v. Sill, 
    675 P.2d 1170
     (Utah
    1983), to exclude the affidavit for this purpose, stating that when
    one “stakes a clear position in a deposition that is not modified on
    cross-examination, he may not thereafter raise an issue of fact by
    his own affidavit which contradicts his deposition unless he can
    provide an explanation of the discrepancy.” The court reasoned
    that “[t]here simply [was] no explanation for the about face that
    [Neurosurgeon 1] makes in . . . his affidavit,” and stated that
    “[a]bsent any such explanation[,] the Court is left with no other
    conclusion than [that Dierl] is directly raising a genuine issue of
    fact through a contradictory statement that is made without
    explanation or context and under Webster v. Sill that is not
    permitted.”
    ¶12 As to the admissibility of Neurosurgeon 2’s affidavit, the
    court stated that it had not been “produced as part of [Dierl’s]
    initial expert disclosures [related to his] case in chief as required
    by” rule 26(a)(4)(C)(i) of the Utah Rules of Civil Procedure. The
    court noted that Neurosurgeon 2 “was disclosed as a rebuttal
    expert, not as an expert as part of [Dierl’s] case in chief” and
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    concluded that under rule 26(d)(4) Neurosurgeon 2’s testimony
    “cannot be used in [Dierl’s] case in chief[,] including to show
    proximate cause at summary judgment[,] unless [Dierl] can show
    that there was good cause for . . . the late disclosure of his opinions
    or that the late disclosure of his opinions was harmless to
    [Birkin].” The court found that Dierl had “not made either of those
    showings” and ruled Neurosurgeon 2’s testimony inadmissible in
    Dierl’s case-in-chief, stating, “[T]herefore, [it] cannot be used to
    fill the gap left in [Dierl’s] case in chief by [Neurosurgeon 1’s]
    deposition testimony.”
    ¶13 “[T]aking all of that in[to] account,” the court stated, it was
    “persuaded that [Birkin] has shown that [Dierl did] not have
    admissible evidence as part of [his] case in chief that the delay in
    diagnosis of . . . Dierl’s brain tumor would have proximately
    caused any damage to . . . Dierl.” So the court concluded that
    “based upon that lack of admissible evidence of an essential
    element,” Dierl’s claim “fail[ed] as a matter of law.” Accordingly,
    the court granted summary judgment in Birkin’s favor and
    dismissed Dierl’s claim with prejudice.
    ISSUES AND STANDARDS OF REVIEW
    ¶14 Dierl asserts that the district court erred in granting
    Birkin’s motion for summary judgment. However, Dierl does not
    ask us to decide whether the district court’s ultimate grant of
    summary judgment was erroneous, assuming both expert
    witnesses’ affidavits were inadmissible. Instead, he presents two
    issues, both about the admissibility of the experts’ affidavits. 4
    4. Dierl also states in the conclusion of his principal brief that the
    district court erred “in determining [that] increased surgical risk
    in this case is not a cognizable injury.” However, he does not
    include this issue as presented for review, and his briefing on this
    (continued…)
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    Therefore, the questions before us are really whether the expert
    witness affidavits were properly excluded—Neurosurgeon 1’s for
    being inconsistent with his deposition testimony and therefore
    ineligible to create a genuine issue of material fact, and
    Neurosurgeon 2’s for being barred from use in Dierl’s case-in-
    chief because Neurosurgeon 2 was disclosed only as a rebuttal
    expert.
    ¶15 “Two different standards of review apply to [Dierl’s]
    claims regarding the admissibility of evidence. The first standard
    of review, correctness, applies to the legal questions underlying
    the admissibility of evidence.” State v. Griffin, 
    2016 UT 33
    , ¶ 14,
    
    384 P.3d 186
     (cleaned up). “The second standard of review, abuse
    of discretion, applies to the trial court’s decision to admit or
    exclude evidence . . . .” Id.; see also Murdock v. Springville Mun.
    Corp., 
    1999 UT 39
    , ¶ 25, 
    982 P.2d 65
     (applying the abuse of
    discretion standard to a district court’s decision rejecting
    affidavits). “Under the abuse of discretion standard, we will not
    reverse unless the decision exceeds the limits of reasonability.”
    Griffin, 
    2016 UT 33
    , ¶ 14 (cleaned up).
    point is cursory. We conclude that this argument is either not
    submitted for our review or is inadequately briefed because Dierl
    has “fail[ed] to provide any factual or legal basis to support [his]
    conclusory statement[]” and “has completely shifted the burden
    of researching the record and applicable law to the court” on this
    point. See Jacob v. Cross, 
    2012 UT App 190
    , ¶ 3, 
    283 P.3d 539
     (per
    curiam). Therefore, we do not address this point. In any event,
    Dierl acknowledges that if we conclude that both affidavits were
    properly excluded, it would “effectively result[] in the [proper]
    dismissal of Dierl’s medical malpractice lawsuit.”
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    ANALYSIS
    ¶16 “If a defendant can show that the plaintiff has no legally
    sufficient evidentiary basis for its claims at trial, the defendant
    may establish the lack of a genuine issue of material fact and an
    entitlement to judgment as a matter of law.” Salo v. Tyler, 
    2018 UT 7
    , ¶ 31, 
    417 P.3d 581
    . Furthermore, where the plaintiff bears the
    burden of proof at trial on the issue in question, a defendant “may
    make that showing without adducing any affirmative evidence of
    its own.” 
    Id.
    ¶17 For a prima facie case of “medical malpractice, a plaintiff
    must establish (1) the standard of care by which the physician’s
    conduct is to be measured, (2) breach of that standard by the
    physician, (3) injury that was proximately caused by the
    physician’s negligence, and (4) damages.” See Jensen v. IHC Hosps.
    Inc., 
    2003 UT 51
    , ¶ 96, 
    82 P.3d 1076
     (cleaned up). Birkin asserted,
    and the district court agreed, that Dierl had not satisfied “the third
    element of medical malpractice—whether . . . Dierl’s injury was
    proximately caused by . . . Birkin’s purported negligence.” “A
    plaintiff’s failure to present evidence that, if believed by the trier
    of fact, would establish any one of the elements of the prima facie
    case justifies a grant of summary judgment to the defendant.”
    Niemela v. Imperial Mfg., Inc., 
    2011 UT App 333
    , ¶ 7, 
    263 P.3d 1191
    (cleaned up).
    ¶18 To satisfy this element and survive Birkin’s motion for
    summary judgment, Dierl needed to show that the alleged breach,
    “in the natural and continuous sequence (unbroken by an efficient
    intervening cause), produce[d] the injury” and that without it,
    “the result would not have occurred.” Arreguin-Leon v. Hadco
    Constr. LLC, 
    2018 UT App 225
    , ¶ 30, 
    438 P.3d 25
     (cleaned up), aff’d,
    
    2020 UT 59
    , 
    472 P.3d 927
    . While “proximate cause is ordinarily a
    question of fact for the jury, summary judgment is appropriate . . .
    where the proximate cause of the injury is left to conjecture.”
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    Dierl v. Birkin
    Thurston v. Workers Comp. Fund, 
    2003 UT App 438
    , ¶ 13, 
    83 P.3d 391
     (cleaned up).
    ¶19 In medical malpractice cases, proximate cause is ordinarily
    established through expert testimony. See Ruiz v. Killebrew, 
    2020 UT 6
    , ¶ 11, 
    459 P.3d 1005
     (“To ensure that the jury is not left to
    speculate, plaintiffs may not provide just any evidence of
    proximate cause: They must generally produce expert testimony
    that the medical professional’s negligence proximately caused the
    plaintiff injury.” (cleaned up)); Nixdorf v. Hicken, 
    612 P.2d 348
    , 354
    n.17 (Utah 1980) (“The plaintiff also has the burden of proving the
    negligence of the defendant was the proximate cause of the injury.
    This proof requires some expert testimony in medical malpractice
    cases.”). Accordingly, after the district court excluded the
    affidavits of both Neurosurgeon 1 and Neurosurgeon 2, it then
    ruled that Dierl did “not have admissible evidence . . . that the
    delay in diagnosis of [his] brain tumor would have proximately
    caused any damage.” We review the district court’s exclusion of
    each expert’s affidavit in turn.
    I. Neurosurgeon 1’s Affidavit
    ¶20 The district court excluded Neurosurgeon 1’s affidavit on
    the basis that it contradicted his deposition testimony and
    therefore could not be used to raise a genuine issue of fact
    regarding causation. We agree. 5
    ¶21 In Webster v. Sill, 
    675 P.2d 1170
     (Utah 1983), a tenant sued
    a landlord after the tenant’s toe was severed by a lawnmower
    5. The case law on this point has sometimes used the language of
    a “sham affidavit.” See Blank v. Garff Enters. Inc., 
    2021 UT App 6
    ,
    ¶ 6, 
    482 P.3d 258
    ; Uintah Basin Med. Center v. Hardy, 
    2005 UT App 92
    , ¶ 6, 
    110 P.3d 168
    . We find such language to be ill-fitting
    because it implies pejorative intent that we do not feel is
    appropriate here.
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    when the tenant slipped while mowing the lawn. Id. at 1171. “On
    deposition, the [tenant] testified that when he started to mow, he
    was unaware that the grass was wet or damp,” that “[h]e first
    concluded that the grass was wet and slippery only after he had
    spoken to [two other individuals] seven or eight days after the
    accident,” and that these individuals “told the [tenant] that the
    grass had been watered the day of the accident.” Id. at 1172. “On
    the basis of the [tenant’s] deposition testimony, [the landlord]
    moved for summary judgment on the ground that the [tenant’s]
    own admission established that there was no genuine issue of fact
    as to whether a dangerous condition existed which caused the
    accident.” Id. “After the deposition, the [tenant] filed an affidavit
    that impliedly, if not directly, contradicted a critical part of his
    deposition,” stating that an agent of the landlord “without [the
    tenant’s] knowledge sprinkled a part of the lawn so that the lawn
    became wet and slippery,” resulting “in the injury to the [tenant]
    in that the [tenant] slipped on the wet, slippery grass.” Id. The
    court identified discrepancies between the tenant’s deposition
    and affidavit as to when the tenant attributed the slip to the grass
    being wet and as to the timing and duration of the watering,
    concluding that the tenant’s “theory of a dangerous condition
    [arose] from speculation based on what others told [him,] and that
    speculation was contrary to his deposition.” Id. at 1173.
    ¶22 The court acknowledged that “[t]he purpose of summary
    judgment is not to weigh the evidence.” Id. at 1172. But the court
    declared that “when a party takes a clear position in a deposition,
    that is not modified on cross-examination, [the party] may not
    thereafter raise an issue of fact by [its] own affidavit which
    contradicts [its] deposition unless [it] can provide an explanation
    of the discrepancy.” Id. at 1172–73. The court noted that this rule
    “must be administered with care” as “[i]t is common knowledge
    that witnesses sometimes misstate themselves, may not properly
    understand the question propounded, or give equivocal
    answers.” Id. at 1173. It also stated that this rule “does not apply
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    Dierl v. Birkin
    when there is some substantial likelihood that the deposition
    testimony was in error for reasons that appear in the deposition
    or the party-deponent is able to state in [an] affidavit an adequate
    explanation for the contradictory answer in [a] deposition.” 
    Id.
    However, finding that the tenant “testified in his deposition
    directly on the issue of causation” and gave an “answer [that] was
    clear and unequivocal that he did not notice that the grass was
    wet or slippery at the time of the accident,” the court concluded
    that the tenant’s “affidavit wholly failed to explain the
    discrepancy between the deposition and the affidavit,” and thus
    there was no genuine issue of material fact and dismissal of the
    tenant’s case was appropriate. See 
    id.
    ¶23 Applying this reasoning to the expert testimony here, we
    reach a similar conclusion. In Neurosurgeon 1’s deposition,
    Birkin’s counsel asked whether Neurosurgeon 1 could “say, to a
    reasonable degree of medical probability, that had . . . Dierl
    undergone surgery in February of 2015, . . . he would not have the
    exact same injury to his vision today.” And Neurosurgeon 1
    responded, “No, because I would be—I would be speculating.”
    Then Birkin’s counsel asked whether Neurosurgeon 1 could “say,
    to a reasonable degree of medical probability, that . . . Dierl would
    not have experienced the exact same injury to his pituitary gland
    that he experienced following his surgery in December of 2015,”
    and Neurosurgeon 1 again answered, “No.” This directly
    contradicts the testimony in Neurosurgeon 1’s affidavit “that due
    to the significant enlargement of the tumor from February 2015 to
    December 2015[,] . . . Dierl’s vision loss was greater than it would
    have been if the surgery had been conducted in February or
    thereabouts instead of December 2015.”
    ¶24 Dierl asserts that “there are some inconsistencies in the
    deposition itself” but that Neurosurgeon 1 did “state that the
    delay caused by Birkin’s negligent failure to call out the brain
    tumor . . . cause[d] Dierl harm, increased risk of harm, increased
    his risk of permanent vision loss, etc.” But Dierl does not provide
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    any statements from Neurosurgeon 1’s deposition indicating that
    Dierl’s actual injuries—as opposed to the risk of injuries—were
    caused by the delayed diagnosis. Cf. Sohm v. Dixie Eye Center, 
    2007 UT App 235
    , ¶ 21, 
    166 P.3d 614
     (“Even if [the doctor’s] affidavit
    contradicts his deposition testimony, which we do not think it
    does, the same inconsistencies existed within the deposition
    testimony itself.” (cleaned up)). Accordingly, Neurosurgeon 1’s
    affidavit contradicts his deposition testimony and cannot be used
    to raise a genuine issue of material fact unless “there is some
    substantial likelihood that the deposition testimony was in error
    for reasons that appear in the deposition or [Neurosurgeon 1 was]
    able to state in his affidavit an adequate explanation for the
    contradictory answer in his deposition.” See Webster, 675 P.2d at
    1173.
    ¶25 There is no “substantial likelihood that the deposition
    testimony was in error for reasons that appear in the deposition.”
    See id. Like in Webster, Neurosurgeon 1 “testified in his deposition
    directly on the issue of causation” and gave an “answer [that] was
    clear and unequivocal.” See id. The text of the deposition makes it
    clear that Neurosurgeon 1 understood the questions and that his
    position was that he could not state that Dierl would not have had
    the same injuries had the surgery been performed in February
    2015.
    ¶26 And Neurosurgeon 1 did not provide “in his affidavit an
    adequate explanation for the contradictory answer in his
    deposition.” See id. We have stated that “[w]e do not have to be
    persuaded by the explanation or even find it compelling,” and
    “[a]s long as it is plausible, the fact finder should be allowed to
    weigh the credibility of the explanation.” Gaw v. Department of
    Transp., 
    798 P.2d 1130
    , 1141 (Utah Ct. App. 1990). But the only
    statement in the affidavit that seems to attempt to explain the
    discrepancy is one stating that “based only on a February 2015 CT
    brain scan [without] contrast showing a 20 mm size tumor,
    [Neurosurgeon 1] could not opine to any medical degree of
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    Dierl v. Birkin
    certainty or probability as to any injury . . . Dierl may have
    sustained from a craniotomy in February 2015.” This does not
    adequately explain the discrepancy, as Neurosurgeon 1 does not
    state that his affidavit testimony was based on any additional
    information. Indeed, the record indicates that Neurosurgeon 1
    had access to all the relevant medical files before his deposition.
    Dierl indicated in his designation of Neurosurgeon 1 as an expert
    witness that “[i]n forming his opinions on this matter,
    [Neurosurgeon 1] ha[d] reviewed and considered the relevant
    medical records,” and Neurosurgeon 1 agreed that he had access
    to and reviewed “the documents, correspondence, and medical
    records related to . . . Dierl’s [hospital] admission and treatment
    in February 2015” and the “medical treatment and medical
    records” related to Dierl’s December craniotomy. Accordingly,
    and like in Webster, Neurosurgeon 1’s “affidavit wholly failed to
    explain the discrepancy between the deposition and the
    affidavit.” See Webster, 675 P.2d at 1173. Consequently, we
    conclude that the district court appropriately exercised its
    discretion in excluding Neurosurgeon 1’s affidavit.
    II. Neurosurgeon 2’s Affidavit
    ¶27 Dierl presents three arguments as to why Neurosurgeon
    2’s affidavit should not have been excluded. First, Dierl argues
    that the affidavit was improperly excluded under Rule 26 the
    Utah Rules of Civil Procedure. He asserts that rule 16 applies
    instead and that the affidavit is admissible under this rule.
    Second, Dierl argues that Neurosurgeon 2’s testimony can be used
    as rebuttal evidence. Third, Dierl argues that the court erred in
    “granting Birkin’s motion for summary judgment without
    addressing Dierl’s . . . Rule 56 Motion.” We address each
    argument in turn.
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    Dierl v. Birkin
    A.     Rules 16 and 26
    ¶28 Dierl first notes that the district court “determined that
    since [Neurosurgeon 2’s] disclosure was late, it could not be used
    in Dierl’s case-in-chief pursuant to . . . [r]ule 26(d)(4), unless Dierl
    could show that there was good cause for the late disclosure or
    the late disclosure was harmless,” but he argues that “[r]ule
    26(d)(4) on its face provides that only undisclosed witnesses are
    excluded and as [Neurosurgeon 2] was disclosed this [r]ule is
    inapplicable in this case.” Dierl asserts that his late disclosure of
    Neurosurgeon 2 falls instead under rule 16, which permits
    sanctions if a party violates a judge’s scheduling order. See Utah
    R. Civ. P. 16(d). And regarding rule 16, he asserts that the court
    “did not enter a scheduling order and therefore, Dierl did not
    disobey such an order by a late disclosure of [Neurosurgeon 2].”
    ¶29 Rule 16 of the Utah Rules of Civil Procedure indicates that
    “[i]f a party or a party’s attorney fails to obey an order, . . . the
    court, upon motion or its own initiative, may take any action
    authorized by Rule 37(b).” 
    Id.
     Rule 37(b) states that “the court,
    upon motion, may impose appropriate sanctions for the failure to
    follow its orders” and provides a list of such sanctions, which
    includes “dismiss[ing] all or part of the action, strik[ing] all or part
    of the pleadings, or render[ing] judgment by default on all or part
    of the action.” 
    Id.
     R. 37(b)(4). Here, however, rule 16 plays no role.
    As Dierl himself points out, there was no pretrial order in place
    upon which a violation could be based. Therefore, rule 16 is
    irrelevant to the issues presented in this case.
    ¶30 Rule 26 mandates that “[t]he party who bears the burden
    of proof on the issue for which expert testimony is offered must
    serve on the other parties the information required by paragraph
    (a)(4)(A) within 14 days after the close of fact discovery.” 
    Id.
    R. 26(a)(4)(C)(1). The rule indicates what information the party
    must serve regarding a witness “retained or specially employed
    to provide expert testimony in the case.” 
    Id.
     R. 26(a)(4)(A).
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    Subsection (d)(4) specifies that “[i]f a party fails to disclose or to
    supplement timely a disclosure or response to discovery, that
    party may not use the undisclosed witness, document, or material
    at any hearing or trial unless the failure is harmless or the party
    shows good cause for the failure.” 
    Id.
     R. 26(d)(4).
    ¶31 Dierl bore the burden of proof on his medical negligence
    claim, so he was responsible for satisfying the terms of rule 26 for
    his case-in-chief. Dierl disclosed Neurosurgeon 2, but he did so
    only as a rebuttal expert and only after Dierl’s disclosures for his
    case-in-chief were due. So while Neurosurgeon 2 was eventually
    disclosed as a rebuttal witness, he was not timely disclosed as an
    expert for Dierl’s case-in-chief, and Dierl’s expert disclosures for
    his case-in-chief were not timely supplemented. In other words,
    Dierl’s intended use of Neurosurgeon 2’s testimony violates rule
    26. Accordingly, the district court was correct that rule 26
    presumptively barred the use of Neurosurgeon 2’s testimony for
    Dierl’s case-in-chief unless he made the necessary showing of
    harmlessness or good cause.
    ¶32 But Dierl disputes that he was required to show
    harmlessness, arguing that “[r]ule 26(d)(4) is clear on its face that
    if the ‘failure is harmless’ without any showing by Dierl, then the
    party may use the witness, document or material.” However, this
    position is at odds with applicable case law. “Under a plain
    language reading of rule 26(d)(4), the burden to demonstrate
    harmlessness or good cause is clearly on the party seeking relief
    from disclosure requirements . . . .” Keystone Ins. Agency, LLC v.
    Inside Ins., LLC, 
    2019 UT 20
    , ¶ 18 n.7, 
    445 P.3d 434
    ; see also
    Vanlaningham v. Hart, 
    2021 UT App 95
    , ¶ 20, 
    498 P.3d 27
     (“As the
    party seeking relief from her rule 26 disclosure requirements, [the
    plaintiff] bears the burden to demonstrate harmlessness or good
    cause.”); Blank v. Garff Enters. Inc., 
    2021 UT App 6
    , ¶ 22, 
    482 P.3d 258
     (“The failure to comply with the disclosure requirements of
    rule 26 . . . require[es] the exclusion of that evidence unless the
    [plaintiffs] show[] that their failure to disclose was either harmless
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    Dierl v. Birkin
    or excused by good cause.”); Utah R. Civ. P. 26 advisory
    committee’s notes to 2011 amendment (“If a party fails to disclose
    or to supplement timely its discovery responses, that party cannot
    use the undisclosed witness, document, or material at any hearing
    or trial, absent proof that non-disclosure was harmless or justified by
    good cause.” (emphasis added)).
    ¶33 And this is for good reason. In Blank v. Garff Enterprises Inc.,
    
    2021 UT App 6
    , 
    482 P.3d 258
    , we noted that “the orderly
    resolution of cases, particularly complex cases . . . , requires timely
    disclosure and the ability to rely on what has—and has not—been
    disclosed to chart out the next steps to move litigation to
    conclusion.” Id. ¶ 23 (cleaned up); see also Utah R. Civ. P. 26
    advisory committee’s notes to 2011 amendment (“More complete
    disclosures increase the likelihood that the case will be resolved
    justly, speedily, and inexpensively. Not being able to use evidence
    that a party fails properly to disclose provides a powerful
    incentive to make complete disclosures. This is true only if trial
    courts hold parties to this standard. Accordingly, although a trial
    court retains discretion to determine how properly to address this
    issue in a given case, the usual and expected result should be
    exclusion of the evidence.”). Parties rely on timely disclosures to
    “make better informed choices about the discovery they want to
    undertake or, just as important, what discovery they want to
    forgo.” RJW Media Inc. v. Heath, 
    2017 UT App 34
    , ¶ 25, 
    392 P.3d 956
    .
    ¶34 Additionally, it is notable that Dierl’s disclosure of
    Neurosurgeon 2 came after Birkin had filed his motion for
    summary judgment and after the hearing on that motion had been
    scheduled. We have noted that “allowing parties to disclose
    expert opinions that are central to a case only in response to a
    dispositive motion would seriously frustrate the orderly
    resolution of these kinds of cases.” Blank, 
    2021 UT App 6
    , ¶ 23
    (cleaned up). Like the defendant in Blank, Birkin “relied on the
    lack of expert testimony when [he] incurred the effort and
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    Dierl v. Birkin
    expense of preparing a motion for summary judgment on [Dierl’s]
    claims.” Id.; see Segota v. Young 180 Co., 
    2020 UT App 105
    , ¶ 22, 
    470 P.3d 479
     (concluding discovery violations were not harmless
    where they “caused the defendants to file and litigate motions,
    necessitating the expenditure of attorney fees and costs”). Dierl
    wants us to allow through the back door what should have been
    disclosed upfront, and permitting Dierl to use his rebuttal expert
    to establish an essential element of his prima facie case essentially
    renders rule 26’s deadline for a plaintiff’s expert disclosures
    meaningless. We decline to invite parties bearing the burden of
    proof to leave essential elements of their claims unsupported until
    after opposing parties have filed dispositive motions.
    Accordingly, we conclude that the district court properly
    exercised its discretion in ruling that Dierl violated rule 26 and
    could not use Neurosurgeon 2’s testimony for his case-in-chief.
    B.     Rebuttal Evidence
    ¶35 Dierl next argues that Neurosurgeon 2’s testimony should
    be admitted as rebuttal evidence against Birkin’s expert witness,
    who “opin[ed] generally no tumor growth between February 2015
    and December 2015, thus concluding no harm to Dierl.” Dierl
    asserts that “he did not and could not have anticipated the
    evidence [Neurosurgeon 2] disclosed for his rebuttal evidence; in
    particular that there was substantial growth of Dierl’s brain tumor
    in the [cephalo-caudal] dimension” between February 2015 and
    December 2015. Dierl argues that this “evidence should not be
    excluded from rebuttal merely because it could have been made
    part of the case-in-chief.”
    ¶36 But Dierl’s argument here is misguided in several ways.
    First, the district court was not restricting what Neurosurgeon 2
    would be able to testify on rebuttal, if the case were to proceed,
    but rather ruled that Neurosurgeon 2’s testimony was not
    admissible in Dierl’s case-in-chief. Second, and relatedly, the issue
    Dierl claims to rebut with Neurosurgeon 2’s testimony is not the
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    Dierl v. Birkin
    dispositive issue. The district court dismissed the case because
    Dierl had not provided admissible evidence of causation. So
    Dierl’s claim that Neurosurgeon 2’s testimony rebutted Birkin’s
    expert’s opinion about “no tumor growth” is irrelevant to our
    inquiry. Dierl’s case failed for lack of proof in the case-in-chief; in
    such a situation, there is nothing to rebut.
    C.     Rule 56
    ¶37 Finally, Dierl argues that the district court should have
    admitted Neurosurgeon 2’s affidavit under rule 56 of the Utah
    Rules of Civil Procedure. He also argues that the district court did
    not actually rule on his motion on this point.
    ¶38 Rule 56 states that “[i]f a party fails to properly support an
    assertion of fact or fails to properly address another party’s
    assertion of fact . . . the court may” do any of the following:
    “(1) give an opportunity to properly support or address the fact;
    (2) consider the fact undisputed for purposes of the motion;
    (3) grant summary judgment if the motion and supporting
    materials—including the facts considered undisputed—show
    that the moving party is entitled to it; or (4) issue any other
    appropriate order.” Utah R. Civ. P. 56(e).
    ¶39 As to Dierl’s argument that the district court erred in
    not admitting Neurosurgeon 2’s testimony under rule 56, we
    are not persuaded. While rule 56 does indeed provide judges
    with discretion to “give [parties] an opportunity to properly
    support or address the fact,” 
    id.,
     the rule also provides other
    options for dealing with unsupported assertions of fact—
    including considering a fact undisputed and granting a motion
    for summary judgment. See 
    id.
     The district court exercised its
    discretion in granting summary judgment, and for the reasons
    stated above, see supra ¶¶ 28–32, we conclude that this action was
    reasonable.
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    ¶40 Furthermore, Dierl is incorrect that the district court failed
    to rule on his motion. First, because granting summary judgment
    is one of the options available under rule 56, the district court’s
    grant of summary judgment was, in effect, a ruling on this motion.
    But even more clearly, the district court’s order—titled “Order
    Granting Defendant’s Motion for Summary Judgment and
    Denying Plaintiff’s Motion to Support Factual Position”—states
    that the court heard argument on both matters, and it clearly
    issued a ruling on both matters. The transcript of the hearing
    further indicates that the court considered and ruled on Dierl’s
    motion to admit Neurosurgeon 2’s affidavit. Therefore, we are
    convinced that the district court ruled on Dierl’s motion and that
    its decision was reasonable.
    CONCLUSION
    ¶41 The district court properly exercised its discretion in
    excluding the affidavits of both experts. Neurosurgeon 1’s
    affidavit contradicted his deposition testimony without
    explanation, so it cannot be used to create a genuine issue of
    material fact. And Neurosurgeon 2 was not disclosed as a witness
    for Dierl’s case-in-chief, so his testimony was properly excluded
    from consideration in Dierl’s case-in-chief. Accordingly, the
    district court correctly granted summary judgment for Birkin. We
    affirm.
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