Armour v. Southeast Alabama Medical Center: Causation Requires Non-Speculative, Similarly Situated Expert Proof When Liability Turns on Specialist Intervention

Introduction

In Armour v. Southeast Alabama Medical Center (Ala. Mar. 20, 2026), the Supreme Court of Alabama affirmed summary judgment for Southeast Alabama Medical Center (“SEAMC”) in a medical-malpractice action arising from Rhonda Kay Armour’s eventual above-the-knee amputation following a later-diagnosed arterial occlusion.

Armour initially presented to SEAMC on November 13, 2011 with severe back/flank pain and left-leg numbness/weakness. Imaging incidentally noted a “nonoccluding thrombus … in the intraabdominal aorta”. She was discharged on November 15, 2011. She returned on November 28, 2011 with advanced ischemia and was found to have popliteal artery occlusion, culminating in amputation.

The case’s central issue on appeal was not breach in the abstract, but causation at summary judgment: whether Armour presented substantial evidence that the hospitalist’s alleged failures (e.g., anticoagulation, CTA/runoff, and vascular consult) probably caused the amputation—especially where the causal chain depended on what a vascular surgeon would have done.

Summary of the Opinion

The Court held that Armour failed to present substantial evidence of proximate causation. While Armour’s hospitalist expert (Dr. Susan Smith) opined that the standard of care required additional vascular workup and that the breaches “much more likely” contributed to amputation, the Court found her causation opinion speculative because it depended on assumptions about specialist (vascular surgeon) evaluation and intervention outside her expertise.

Critically, SEAMC presented deposition testimony from a vascular surgeon (Dr. Randall Nichols) who stated that, if consulted during the November 13–15 admission, he would have done no acute intervention beyond follow-up imaging; he also opined there were no signs of popliteal occlusion then and that the later clot appeared acute. With no countervailing vascular-surgeon testimony from Armour, the Court concluded there was no competent evidence linking the alleged breaches to the amputation and affirmed summary judgment.

Analysis

Precedents Cited

  • Potter v. First Real Estate Co., American Liberty Ins. Co. v. AmSouth Bank, and Nationwide Prop. & Cas. Ins. Co. v. DPF Architects, P.C.
    Role in the opinion: These cases supply the de novo summary-judgment framework and the “substantial evidence” requirement. The Court applied them to hold that once SEAMC challenged causation with supported evidence, Armour had to respond with admissible, non-speculative expert proof creating a genuine issue of material fact.
  • Hooper v. Columbus Reg'l Healthcare Sys., Inc.
    Role: Reinforced that summary judgment is appropriate when no genuine dispute of material fact exists and the movant is entitled to judgment as a matter of law—here, because causation evidence was legally insufficient.
  • Looney v. Davis; Complete Family Care v. Sprinkle; Bradford v. McGee; and § 6-5-484, Ala. Code 1975
    Role: Established the foundational elements of Alabama medical-malpractice liability: standard of care, breach, and proximate causation. The Court emphasized that even assuming breach, Armour still had to prove proximate causation with substantial evidence.
  • Levesque v. Regional Med. Ctr. Bd. and Hauseman v. Univ. of Alabama Health Servs. Found.
    Role: Supported the rule that the nonmovant “ordinarily must present” testimony from a similarly situated expert to defeat summary judgment in medical-malpractice claims. The Court used these authorities to frame the need for competent expert testimony on causation.
  • Collins v. Herring Chiropractic Ctr., LLC
    Role: Provided the reminder that evidence is viewed in the light most favorable to the nonmovant. The Court acknowledged this standard but held that favorable inferences cannot cure speculative expert foundations.
  • Jostens, Inc. v. Herff Jones, LLC (quoting Garner v. Covington Cnty.)
    Role: Recognized proximate causation is “ordinarily” for the jury. Armour relied on this principle; the Court effectively limited it by holding that a jury question arises only when the plaintiff produces competent, non-speculative evidence supporting reasonable inferences.
  • Becton v. Rhone-Poulenc, Inc.
    Role: Directly powered SEAMC’s argument (accepted by the Court) that conclusory or speculative expert opinions without proper evidentiary foundation do not create a genuine issue of material fact at summary judgment.
  • Hines v. Armbrester; Downey v. Mobile Infirmary Med. Ctr.; Giles v. Brookwood Health Servs., Inc.; Spencer v. Remillard; Hrynkiw v. Trammell; and Graves v. Brookwood Health Servs., Inc.
    Role: These cases establish and reiterate the methodological rule that expert testimony must be viewed “as a whole,” not by isolating favorable snippets. The Court applied this rule to reject Armour’s attempt to rely on Dr. Smith’s bottom-line causation statements while discounting the parts of her testimony that made causation depend on a vascular surgeon’s hypothetical actions.
  • Lyons v. Walker Reg'l Med. Ctr. (quoting Pruitt v. Zeiger, quoting in turn Bradford v. McGee)
    Role: Provided the articulation that a plaintiff ordinarily must present expert testimony from a similarly situated health-care provider on the “proximate causal connection” between breach and injury. The Court used this chain of authority to underscore the mismatch between the causal theory (specialist intervention) and the expert offered (hospitalist).
  • Rivard v. University of Alabama Health Servs. Found., P.C.
    Role: Anchored the conclusion: the plaintiff bears the burden to establish a proximate causal connection. The Court cited it in affirming that Armour did not meet her burden in response to SEAMC’s motion.

Legal Reasoning

  1. Framing causation as the dispositive issue.
    SEAMC’s motion targeted proximate causation, contending Armour lacked substantial evidence that any hospitalist-level breach changed the outcome. The trial court granted summary judgment explicitly because Armour “cannot prove causation,” which narrowed the appellate review to whether her evidentiary showing created a jury question on causation.
  2. Dr. Smith’s causal narrative required a specialist link.
    Dr. Smith identified two alleged breaches: (1) failure to recognize/manage the aortic thrombus (including anticoagulation considerations), and (2) failure to appreciate embolization risk in light of symptoms. But when her testimony is read as a whole, her standard-of-care and causation pathway repeatedly ran through: order CTA and call a vascular surgeon, who would then determine treatment and evaluate downstream embolization (e.g., “iliac runoff”).
  3. The Court treated the missing vascular-surgeon proof as a fatal causation gap.
    The Court reasoned that if causation hinges on what a vascular surgeon would have done (timing, type of intervention, and its likely efficacy), then a hospitalist’s testimony about those hypothetical specialist decisions is not competent to supply proximate causation. Without vascular-surgeon testimony “to close this gap,” Dr. Smith’s causation opinion was deemed speculative.
  4. SEAMC supplied competent, contrary specialist evidence.
    Dr. Nichols testified that he would not have intervened acutely for the aortic finding beyond follow-up imaging, that there were no clinical signs suggesting popliteal occlusion during the earlier admission, and that the later clot was acute. The Court treated this as the “only competent evidence” of what vascular surgery would have done—meaning that even if Dr. Barkley breached the standard of care by not consulting vascular surgery, the record did not support that consultation would have altered the outcome.
  5. Result: no substantial evidence of proximate causation; summary judgment affirmed.
    Because Armour’s evidence did not establish that the alleged omissions probably caused or contributed to the amputation, the Court held that SEAMC was entitled to judgment as a matter of law.

Impact

This decision sharpens a recurring summary-judgment dynamic in Alabama medical-malpractice litigation: when the plaintiff’s causal theory depends on actions of a specialist not produced as an expert, causation may fail as a matter of law.

  • Expert “fit” becomes outcome-determinative on causation. Plaintiffs must align expert qualifications not only to breach but to the causal chain—especially where prevention of injury depends on specialist consultation/intervention.
  • “Viewed as a whole” will be used to defeat snippet-based causation claims. Litigants should expect courts to read depositions holistically and to discount bottom-line causation statements that rest on speculative assumptions revealed elsewhere in the testimony.
  • Defense strategy: produce the “missing specialist.” SEAMC’s presentation of a vascular surgeon who testified he would not have intervened provided a powerful way to convert a consultation-omission theory into a no-causation ruling.
  • Practical litigation consequence. In cases involving embolic/vascular events, plaintiffs may need early retention of vascular surgery experts (and, where anticoagulation is debated, potentially hematology/gastroenterology) to establish what would have been done and why it would have changed the outcome.

Complex Concepts Simplified

Nonoccluding thrombus / mural aortic thrombus (MAT)
A blood clot along the wall of the aorta that does not fully block blood flow. The concern is not only blockage at that location, but that pieces may break off and travel (“embolize”) to other arteries.
Occlusion
A blockage of a blood vessel that impairs or stops blood flow.
Embolization
Movement of clot material from one location to another, potentially blocking smaller downstream vessels (e.g., in the leg).
CTA with runoff
A CT angiogram is an imaging study to visualize blood vessels. “Runoff” refers to imaging that tracks blood flow down into the leg arteries to detect narrowing or blockage.
Ischemia, compartment syndrome, necrosis
Ischemia is inadequate oxygenated blood supply to tissue. Compartment syndrome is dangerous pressure buildup in muscle compartments, often due to swelling/ischemia. Necrosis is tissue death, which can necessitate amputation when advanced.
“Similarly situated” expert
An expert with training/experience sufficiently matched to the defendant or to the medical decision at issue. Here, the Court treated vascular-surgeon decision-making as requiring vascular-surgeon testimony to establish what would have been done and whether it would have prevented harm.
Substantial evidence at summary judgment
Evidence of enough weight and quality that fair-minded persons could reasonably infer the fact sought to be proved; speculation and unsupported conclusions do not qualify.

Conclusion

Armour confirms that Alabama courts will demand a tight, competent evidentiary chain on proximate causation at the summary-judgment stage. Even where an expert states that a breach “more likely than not” caused an injury, that opinion will not create a jury issue if, when the testimony is viewed as a whole, causation depends on speculative assumptions about how an unproduced specialist would have evaluated and treated the patient. The decision thus reinforces a practical rule of proof: when causation turns on specialist intervention, plaintiffs must present specialist-level expert testimony—or risk judgment as a matter of law.