Why Hand Surgeons Get Sued: The Missed Tendon, the Nerve, and the Hidden Infection

By John Mahoney · June 2026 · 8 min read

Hand surgery is a specialty where small injuries carry enormous downstream stakes. A laceration that looks trivial in the emergency department can sever a flexor tendon or a digital nerve, and the failure to recognize it converts a stitch-and-go visit into permanent loss of grip, pinch, or sensation. An untreated felon or flexor tenosynovitis can cost a finger in days. Because the hand is the organ of work, the damages in these cases run far above what the underlying injury looks like on paper — a missed nerve in a dominant index finger is a career-ending event for a carpenter, a surgeon, or a musician. An attorney who values a hand case by the size of the wound will badly misprice it. This guide explains where hand-surgery liability actually lives, the cannot-miss failures behind it, and what separates a strong case from a weak one — for plaintiff and defense med-mal attorneys.

Disclaimer: This article is for informational purposes only and does not constitute legal advice. The patterns below draw on closed-claims and insurer datasets that span different eras and definitions; treat them as directional, verify against the controlling jurisdiction, and value any individual case on its own record.

The Frequency-and-Severity Reality

Hand surgery sits at the higher-risk end of the spectrum, in the company of the surgical and procedural specialties rather than the low-frequency diagnostic ones. Hand surgeons are drawn from orthopedic surgery and plastic surgery, both of which carry above-average annual claim frequencies, and the operative, high-volume, often-emergent nature of hand work generates a steady stream of allegations. Much of the exposure is not in the operating room at all but in the emergency department and urgent-care setting, where lacerations and infections are first — and frequently incompletely — evaluated before a hand specialist is ever involved.

Severity is where hand surgery becomes distinctive. Indemnity in this specialty is driven less by mortality and more by permanent functional disability: loss of motion, loss of sensation, chronic pain, and amputation of a digit or part of the hand. These are visible, measurable, lifelong impairments that map directly onto a plaintiff's earning capacity, and they read powerfully to a jury. A single missed digital nerve or a delayed infection that ends in amputation can produce a payout out of all proportion to the apparent gravity of the initial injury. The screening lesson is to value hand cases on realized function and occupation, not on the size of the original wound or the complexity of the procedure.

The Dominant Allegation Types

Hand-surgery claims cluster into a diagnostic group concentrated in the acute setting, a technical-performance group from the operating room, and an infection group that bridges both:

• Missed or inadequately treated acute injury — failure to diagnose or properly repair a flexor or extensor tendon laceration or a digital nerve laceration, most often when the wound was first seen and closed in the emergency department without recognizing the deeper structure that was cut.
• Failure or delay to diagnose infection — commonly reported as one of the highest-severity hand allegations, because a missed felon, flexor tenosynovitis, or necrotizing soft-tissue infection escalates to amputation or systemic illness within days.
• Improper performance of a procedure — technical error in operative repair, tendon and nerve reconstruction, fracture fixation, or carpal-tunnel and other nerve-release surgery, including iatrogenic nerve injury during the release itself.
• Missed fracture, dislocation, or retained foreign body — an undiagnosed fracture or dislocation on the initial film, or a foreign body (glass, metal, wood) left in a wound, that later requires reoperation.
• Lack of informed consent — failure to disclose the realistic functional outcome, the prospect of stiffness or incomplete recovery, and the risk of nerve injury, central to elective releases and reconstructions.

The structural point: by setting, a large share of hand liability originates in the acute, non-operative evaluation rather than in the operating room. Any intake should be triaged first on where the alleged failure occurred — the initial ED/urgent-care assessment, the operative repair, or the post-operative course — because the standard of care, the experts, and the defendant mix shift entirely with that line.

The Cannot-Miss Conditions and Failures

The conditions and failures that drive hand-surgery litigation are:

• Flexor and extensor tendon lacerations — missed or inadequately repaired. The classic failure is a finger or palm laceration closed in the ED without testing the tendon, so a partial or complete cut is discovered only when the patient cannot move the digit. Delayed recognition narrows or forecloses the window for primary repair.
• Digital and major nerve lacerations. A divided digital nerve produces permanent numbness and is a leading hand exposure precisely because it is easy to miss on a quick wound check; the standard of care is a documented sensory exam before closure.
• Hand infections — felon, flexor (suppurative) tenosynovitis, and necrotizing infection. These are surgical emergencies. Failure to recognize the Kanavel signs, to start antibiotics, and to take the patient to the operating room promptly can cost a digit or the hand — the highest-severity outcomes in the specialty.
• Compartment syndrome of the hand or forearm. A delayed diagnosis after crush injury, fracture, or extravasation leads to ischemic contracture and permanent disability; a missed or late fasciotomy is a recurring high-damages allegation.
• Iatrogenic nerve injury during nerve release. Carpal-tunnel and cubital-tunnel releases that injure the median, ulnar, or a sensory branch — or that are performed on a misdiagnosed condition — convert an elective, low-stakes procedure into a permanent-deficit claim.
• Missed fracture, dislocation, retained foreign body, replantation outcomes, and wrong-site (wrong-digit) surgery. Each is a discrete, high-credibility failure: an undiagnosed scaphoid or other fracture, a foreign body left behind, a poor or untimely replantation, and the never-event of operating on the wrong finger.
• Complex regional pain syndrome (CRPS). A disabling chronic-pain sequela that frequently follows hand trauma or surgery and anchors large pain-and-suffering damages when an underlying injury or surgical error is alleged to have triggered it.

For the acute-injury side, the single most actionable screening question is whether the chart documents a tendon and sensory exam of the injured digit before the wound was closed — the absence of that documented exam is the spine of most missed-tendon and missed-nerve cases. For the infection side, the decisive question is the timeline: how long elapsed between the first presentation with infection signs and operative drainage, because in the hand that interval is measured in hours, not days.

The Contributing Factors That Drive Payouts

Across hand-surgery closed claims, the recurring contributing factors are:

• Diagnostic process in the acute setting — the costliest pattern: an incomplete wound exam that misses a tendon or nerve, an under-read film that misses a fracture or dislocation, and failure to recognize the early signs of a hand infection or compartment syndrome.
• Timing and escalation — delay in diagnosis or in getting an infection or compartment syndrome to the operating room, and delay in referral from the ED to a hand specialist, all of which narrow or close the window for a good outcome and raise the indemnity weighting.
• Technical skill / improper performance — operative error in tendon or nerve repair, fracture fixation, and nerve-release surgery, including iatrogenic injury to the very structure the procedure was meant to protect.
• Communication and informed consent — failure to set realistic functional expectations, to disclose the risk of stiffness, incomplete recovery, or nerve injury, and to convey the urgency of follow-up after an acute injury.
• Documentation — missing records of the tendon and sensory exam, of the wound exploration, of the device or fixation details, and of the timeline of infection signs — gaps that consistently decide whether a claim is paid.

Two of these are hand-specific levers. The first is the documented acute exam: in a missed-tendon or missed-nerve case, the line between a defensible file and a paid claim is almost always whether the chart records a motor and sensory exam of the injured digit before closure. The second is the infection clock: because hand infections progress in hours, the recorded interval between presentation and operative drainage frequently determines causation and value all by itself. Documentation rarely creates liability here, but in hand cases it routinely decides it.

Strong Case vs. Weak Case in Hand Surgery Malpractice

The same factors grade the file, and the framing is useful to both sides.

What makes a hand-surgery case strong (plaintiff) / dangerous (defense)

• A digit laceration closed in the ED with no documented tendon or sensory exam, where a complete flexor tendon or digital nerve laceration was discovered only later — a clean failure-to-examine on a permanent-deficit injury.
• A patient who presented with the signs of a felon, flexor tenosynovitis, or compartment syndrome and was sent home or treated with oral antibiotics, with a long recorded delay to drainage or fasciotomy that ended in amputation or contracture.
• An iatrogenic median or ulnar nerve injury during a carpal- or cubital-tunnel release, or a release performed for a misdiagnosed condition, producing a permanent deficit on an elective procedure.
• A wrong-digit operation, a retained foreign body, or a missed fracture on a film a competent reader would have caught — high-credibility, discrete failures — especially in a dominant or occupationally critical hand.

What makes a hand-surgery case weak (plaintiff) / defensible (defense)

• A documented motor and sensory exam and wound exploration at presentation, with appropriate, timely referral to a hand specialist — the acute evaluation intact.
• An infection recognized promptly, started on the right antibiotics, and taken to the operating room within an appropriate window, where the bad outcome reflects the aggressiveness of the disease rather than a delay.
• A nerve injury or stiffness that was a disclosed, known risk of the procedure, with documented informed consent and realistic-outcome counseling, framing the result as an accepted complication rather than negligence.
• A patient whose record shows missed follow-up, non-adherence to splinting or therapy, or a delayed presentation that drove the poor functional result independent of the surgeon's care.

Hand surgery rewards a fast triage on setting and timeline. On the acute side, the case lives or dies on the documented exam and the referral and treatment clock. On the operative side, it turns on the technical standard, the consent, and whether a permanent deficit was a disclosed risk or an avoidable error. And across all of it, the damages are anchored in function and occupation, not in the appearance of the original injury. Whichever side you are on, grading the file means building the timeline precisely and pressure-testing the hand-surgery expert who will carry it.

Bottom Line

Hand surgeons get sued because the hand is unforgiving and the consequences of a missed structure are permanent. The cannot-miss facts are the digit closed without a tendon or sensory exam, the divided nerve found too late, the felon or flexor tenosynovitis that progressed to amputation while antibiotics were tried, the compartment syndrome whose fasciotomy came too late, the iatrogenic injury during a nerve release, the retained foreign body, and the wrong-digit operation. The damages are driven by functional disability and occupation, which makes even a small anatomic injury a large case. Whether you are screening these matters for the plaintiff or defending them, triage first to the right setting — acute evaluation, operative repair, or post-operative course — build the timeline to the hour where infection or ischemia is in play, and grade the file on the documented exam, the treatment clock, and the consent, not on the size of the wound alone.

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