Schuemann v. Timperley (321 Neb. 955): Expert Proof of Proximate Cause Remains Essential in Informed-Consent Malpractice—Even When Breach Is Factually Disputed

I. Introduction

Case: Schuemann v. Timperley, 321 Neb. 955 (Neb. Aug. 7, 2026).
Parties: Richard G. Schuemann (patient/plaintiff/appellant) sued Brent D. Timperley, M.D. (ophthalmologist/defendant/appellee).
Claim: Medical malpractice based solely on an alleged lack of informed consent for bilateral cataract surgeries performed in 2018, with alleged later vision complications and retinal detachments repaired by other surgeons in 2019.

The case squarely presented a recurring litigation problem in informed-consent malpractice: even where a plaintiff produces evidence creating a factual dispute about whether risk disclosures were made (breach), can the case survive summary judgment without competent medical proof linking the alleged disclosure failure to the plaintiff’s claimed injuries and damages (proximate cause)?

The Nebraska Supreme Court affirmed summary judgment for the physician, holding that the patient’s failure to produce competent expert evidence on proximate cause was fatal as a matter of law—rendering any factual dispute about breach immaterial.

II. Summary of the Opinion

The Court applied Nebraska’s summary-judgment burden-shifting framework and the statutory and decisional law governing informed-consent claims under the Nebraska Hospital-Medical Liability Act.

  • Breach/standard-of-care: The record contained a genuine factual dispute—Timperley testified and averred he disclosed RK-related risks; Schuemann (and his wife) swore he did not. The district court correctly found a triable factual dispute on breach.
  • Proximate cause: The dispute over breach did not matter because Schuemann offered no expert medical testimony on causation. Timperley’s affidavit opined (to a reasonable degree of medical certainty) that Schuemann’s complications and damages were not caused by any breach by Timperley, and Timperley also showed Schuemann had designated no experts.
  • Common knowledge exception: The Court rejected Schuemann’s attempt to avoid expert causation proof via the “common knowledge exception,” describing his argument as too vague and concluding the exception did not apply.
  • “Self evident”/dignitary damages theory: The Court refused to entertain a new appellate theory that lack of informed consent supports recovery for deprivation of self-determination, worry, and mental stress without expert causation proof. The theory was not preserved below, and in any event § 44-2820 still requires proof that “lack of informed consent was the proximate cause of the injury and damages claimed.”

Disposition: Affirmed.

III. Analysis

A. Precedents Cited

1. Summary judgment framework and “failure of proof” doctrine

  • D&M Roofing & Siding v. Distribution, Inc., 319 Neb. 707, 24 N.W.3d 850 (2025): Cited for de novo review of summary judgment and viewing evidence in the nonmovant’s favor.
    Influence: Anchored the appellate lens; despite viewing facts favorably to Schuemann on breach, the Court still found summary judgment appropriate due to missing causation proof.
  • Ricker v. Nebraska Methodist Health Sys., 319 Neb. 628, 24 N.W.3d 344 (2025) and Noel v. Pathology Med. Servs., 320 Neb. 92, 26 N.W.3d 196 (2025): Cited for the prima facie burden, shifting burdens, and permissible summary-judgment showings when the nonmovant bears trial proof.
    Influence: Supported Timperley’s two-pronged approach: (i) negate causation via affidavit; (ii) show plaintiff’s evidence is insufficient (no designated expert).
  • Clark v. Scheels All Sports, 314 Neb. 49, 989 N.W.2d 39 (2023): Cited for the proposition that a “failure of proof on [an] essential element . . . renders all other facts immaterial.”
    Influence: This was the decisive doctrinal lever: even with a genuine dispute on breach, Schuemann’s failure on proximate cause made that dispute legally irrelevant.

2. Informed consent: elements and statutory causation requirement

  • Thone v. Regional West Med. Ctr., 275 Neb. 238, 745 N.W.2d 898 (2008): Cited for the elements of informed-consent malpractice (standard of care, deviation, proximate cause) and for limiting the common knowledge exception.
    Influence: Provided both the elements framework and the strict approach to common-knowledge substitution—especially on causation.
  • Curran v. Buser, 271 Neb. 332, 711 N.W.2d 562 (2006): Cited for the statutory-informed consent causation formulation: plaintiffs must prove both (i) a reasonable person would have refused if properly informed and (ii) the lack of information proximately caused the injury/damages.
    Influence: The Court used Curran to reject any suggestion that “I would have refused” alone establishes the causation element required by § 44-2820.
  • Yoder v. Cotton, 276 Neb. 954, 758 N.W.2d 630 (2008): Cited to distinguish informed-consent negligence from medical battery (e.g., complete failure to obtain consent or exceeding its scope).
    Influence: Reinforced that Schuemann’s theory was negligence-based informed consent, so the statutory proximate cause requirement governed.
  • Hamilton v. Bares, 267 Neb. 816, 678 N.W.2d 74 (2004): Cited for general malpractice proximate cause—deviation must have caused or contributed to injury/damage.
    Influence: Helped ground the analysis that causation is not presumed from treatment or from later complications.

3. Expert testimony requirements and limits of lay proof

  • Simon v. Drake, 285 Neb. 784, 829 N.W.2d 686 (2013): Cited for the general rule that expert testimony is normally required to establish causation in medical malpractice.
    Influence: Supported summary judgment where the plaintiff had no expert to connect the alleged disclosure failure to specific injuries/damages.
  • Lombardo v. Sedlacek, 299 Neb. 400, 908 N.W.2d 630 (2018): Cited for the proposition that a physician’s self-supporting affidavit can establish a prima facie case of no malpractice at summary judgment.
    Influence: Validated Timperley’s affidavit as competent evidence shifting the burden to Schuemann.
  • Green v. Box Butte General Hosp., 284 Neb. 243, 818 N.W.2d 589 (2012), abrogated on other grounds, Clark, supra: Cited for the common knowledge exception articulation.
    Influence: The Court relied on this line to emphasize the exception’s narrowness and its limited role, especially on causation.
  • Carrizales v. Creighton St. Joseph, 312 Neb. 296, 979 N.W.2d 81 (2022): Cited to recognize the existence of the common knowledge exception.
    Influence: Acknowledged the exception but did not expand it; the Court instead adhered to narrow application.
  • Marshall v. Radiology Assoc., 225 Neb. 75, 402 N.W.2d 855 (1987): Cited to illustrate that lay witnesses are not competent to interpret medical testimony on negligence (used here by analogy to causation opinions).
    Influence: Supported the Court’s rejection of Schuemann’s own medical-causation assertions as incompetent.

4. Appellate preservation and briefing standards

  • Marcuzzo v. Bank of the West, 290 Neb. 809, 862 N.W.2d 281 (2015): Cited for the rule that appellate courts will not address arguments that are too generalized or vague to be understood.
    Influence: Provided an independent basis to reject the underdeveloped “common knowledge” causation argument.
  • Elbert v. Young, 312 Neb. 58, 977 N.W.2d 892 (2022): Cited for the rule barring new theories raised for the first time on appeal.
    Influence: Foreclosed Schuemann’s newly framed “dignitary tort/self-determination” damages theory.

5. Prior appellate history

  • Schuemann v. Timperley, 314 Neb. 298, 989 N.W.2d 921 (2023): The earlier appeal reversed summary judgment on statute-of-limitations grounds because the defense was not expressly pled and the complaint was not time-barred on its face.
    Influence: Set the stage for the remand and the second summary-judgment motion, and notably signaled that Timperley could seek summary judgment on properly presented alternative grounds—later realized through the expert/causation deficiency.

6. Out-of-state decisions invoked and rejected (procedurally and substantively)

  • Parris v. Limes, 2012 OK 18, 277 P.3d 1259 (2012) and Nestor v. La. Univ. Health Sciences Center, 917 So. 2d 1273 (La. App. 2005), abrogated on other grounds, Pete v. Boland Marine and Manufacturing, 379 So. 3d 636 (La. 2023): Cited by Schuemann to support recovery for mental anguish/dignitary harms absent physical injury.
    Influence: The Nebraska Supreme Court declined to engage these authorities because the theory was not preserved and because Nebraska’s § 44-2820 imposes a proximate-cause requirement for “injury and damages claimed.”

B. Legal Reasoning

1. The Court separated breach from causation—and treated causation as independently dispositive

A key feature of the opinion is its disciplined element-by-element approach. The Court accepted (for summary-judgment purposes) that there was a genuine issue of material fact regarding what Timperley disclosed about RK-related risks. But it held that this factual dispute could not save the case absent proof on proximate causation—invoking Clark v. Scheels All Sports to treat missing proof on one element as rendering other factual disputes immaterial.

2. Timperley met his prima facie summary-judgment burden on causation in two complementary ways

First, Timperley “affirmatively negate[d]” causation through his own medical affidavit opining that Schuemann’s “complications and damages were not the result of any breach of the standard of care” by him. Second, Timperley demonstrated that Schuemann’s evidence was insufficient because discovery showed Schuemann had designated no expert witness—critical given Nebraska’s general rule that expert testimony is normally required to establish causation in medical malpractice.

3. Schuemann’s responsive evidence failed because it was not competent on medical causation

Schuemann attempted to create a triable causation issue through lay testimony: his deposition and affidavit statements that RK scars were compromised and that he would not have experienced “resulting complications” but for the cataract surgeries. The Court treated these as medically technical causal assertions beyond a lay witness’ competence, emphasizing that expert proof is “almost always required” on proximate causation in malpractice litigation and that the causal link must be “sufficiently obvious” before a lay inference can substitute.

4. The common knowledge exception was tightly cabined—especially on causation

Relying on Thone v. Regional West Med. Ctr., the Court reiterated that the common knowledge exception is “limited to cases of extreme and obvious misconduct” (e.g., leaving a surgical instrument inside a patient, amputating the wrong limb). It further reinforced Thone’s caution that, even where common knowledge might establish breach, expert testimony is “almost always required” to establish proximate causation. Schuemann’s generalized briefing—asserting only that some damage would “result” from an unconsented procedure—was deemed too vague to analyze and insufficient to invoke the exception.

5. The Court enforced two separate gatekeeping doctrines: preservation and statutory causation

Schuemann’s effort to reframe the case as one seeking “self evident” dignitary damages (deprivation of self-determination, mental stress) failed for two independent reasons:

  1. Preservation: The theory was not presented to the district court (complaint sought medical expenses and diminished eyesight), and Nebraska appellate practice forbids raising new theories for the first time on appeal (Elbert v. Young).
  2. Statutory causation: Even assuming such damages were pled, § 44-2820 requires proof not only that a reasonable person would have refused treatment if properly informed, but also that “lack of informed consent was the proximate cause of the injury and damages claimed.” Changing the label on damages did not eliminate the proximate-cause element.

C. Impact

1. Practical tightening of informed-consent litigation at the summary-judgment stage

Core effect: The opinion reinforces that Nebraska informed-consent claims are not “breach-only” cases. Even when the record supports a fact dispute about disclosure, plaintiffs must produce competent proof that the disclosure failure proximately caused the specific injuries/damages claimed under § 44-2820.

2. Expert designation is functionally case-dispositive in most informed-consent cases alleging medical injury

The decision operationalizes a clear litigation signal: where plaintiffs claim medical complications (e.g., ocular structural compromise, later diminished vision, sequelae requiring additional procedures), expert testimony on causation will ordinarily be necessary, and failure to timely disclose/designate experts can be fatal on summary judgment.

3. Limits on “dignitary harm” theories in Nebraska informed-consent cases

While the Court did not definitively decide whether Nebraska recognizes stand-alone dignitary damages for lack of informed consent absent physical injury, it strongly suggested that any such recovery—if available—would still need to satisfy § 44-2820’s proximate-cause requirement and must be properly pled and preserved. Litigants attempting to import out-of-state approaches will face both procedural (preservation) and statutory (proximate-cause) barriers.

4. Appellate briefing discipline and exception-crafting

By invoking Marcuzzo v. Bank of the West to reject underdeveloped “common knowledge” arguments, the Court discouraged conclusory briefing as a pathway to expanding exceptions. Future litigants seeking the common knowledge exception must articulate (with case-specific detail) why the causal link is lay-obvious.

IV. Complex Concepts Simplified

  • Informed consent (Nebraska statutory standard): Consent based on the information ordinarily provided by similar providers in the same or similar locality (§ 44-2816). It focuses on professional disclosure norms, not merely what a patient subjectively wanted to hear.
  • Two-part causation in informed consent (§ 44-2820):
    1. Decision causation: A reasonably prudent person in the plaintiff’s position would not have undergone the treatment if properly informed.
    2. Injury/damages causation: The lack of informed consent was the proximate cause of the injury and damages claimed.
    Proving only “I would have refused” does not automatically prove that the claimed medical harm was proximately caused in the legally required sense.
  • Proximate cause: A legally sufficient causal connection—here, that the physician’s deviation from the standard of care caused or contributed to the injury/damage, not merely that treatment occurred before the injury.
  • Why expert testimony matters: Medical causation often turns on technical questions (mechanisms of injury, alternative causes, disease progression). Nebraska courts generally require medical experts to explain those links unless they are truly obvious to a layperson.
  • Common knowledge exception: A narrow carve-out where negligence or causation can be inferred without medical expertise (classically: leaving instruments inside a patient or amputating the wrong limb). Even then, Nebraska law warns that causation still “almost always” needs expert proof.
  • Summary judgment burden shifting: Once the moving party presents evidence that would entitle it to win if uncontroverted at trial, the nonmoving party must respond with competent evidence showing a genuine issue for trial—conclusory or incompetent evidence will not suffice.
  • Preservation for appeal: You generally cannot lose in the trial court on a theory you never presented there; appellate courts will not consider new theories raised for the first time on appeal.

V. Conclusion

Schuemann v. Timperley solidifies a highly consequential point for Nebraska informed-consent malpractice litigation: a plaintiff may create a triable dispute about what the physician disclosed, yet still properly lose on summary judgment by failing to produce competent proof—typically expert medical testimony—that the alleged disclosure failure proximately caused the injuries and damages claimed as required by § 44-2820. The opinion also underscores that the common knowledge exception is narrowly applied (and rarely substitutes for expert causation proof) and that new “dignitary harm” theories must be pled, preserved, and still satisfy statutory proximate-cause requirements.