$1.9 Million Settlement After a Misread Knee X-Ray Led to a Georgia Man’s Leg Amputation

A knee dislocation can slip back into place before anyone photographs it.

On a Saturday afternoon in late May 2017, a man in Douglas County fell on his right side and arrived at the emergency department of a community hospital with severe knee pain. The attending physician ordered right-knee X-rays. The on-call radiologist read them as showing no acute fracture or dislocation. He was fitted with a knee brace and sent home.

Forty-eight hours later he returned. The leg was swollen and discolored, and he had lost sensation below the knee. This time the diagnosis was correct: a dislocated knee with a vascular injury. He was transferred the next day for emergency vascular surgery. The surgeons could not save the leg. He underwent a through-knee amputation.

Davis Adams handled the case and reached a $1.9 million settlement with the radiologist, the emergency physician, and their employers. Past results do not guarantee future outcomes, and every case turns on its own records.

Why a knee dislocation can end in amputation when the film looks normal

Roughly half of knee dislocations spontaneously reduce before the patient reaches a hospital. The joint slips out and then slips back on its own, so by the time the X-ray is taken, the anatomy on the film often looks intact. That is the diagnostic trap. A radiologist reading a mechanism-consistent film without other signs may report exactly what the anatomy shows, and the anatomy shows a knee that has already put itself back together.

The problem sits behind the joint. The popliteal artery, the main blood supply behind the knee, is tethered at the top and the bottom, so a dislocation can stretch or tear the inner lining of the vessel even when the joint reduces itself. The wall does not have to be severed for the vessel to fail. A tear in the inner lining, called an intimal tear, can form a clot that grows over hours.

Which is why a palpable pulse at discharge does not close the question. The published rate of popliteal artery injury in knee dislocations ranges from roughly 20 to 40 percent across studies, and the clock on that injury runs whether or not the ER can feel a pulse at triage. That is the mechanism behind a missed knee dislocation leading to amputation in Georgia, and it is the mechanism that decided our client’s case.

What a competent read of a post-trauma knee film usually includes

A misread knee x-ray, in cases like this one, is rarely a case of a fracture staring back at the radiologist and being missed. It is a case of a film that looks structurally intact being treated as the end of the workup instead of the beginning of one. A careful radiology read of a post-trauma knee generally does more than confirm there is no visible fracture.

• Comparison views of both knees when the mechanism suggests displacement and the injured side reads as normal.
• A dedicated look at the fibular head and tibial plateau for subtle avulsions or step-offs that suggest a joint has been displaced and reduced.
• Attention to joint-space asymmetry and small widenings that a quick scan can miss.
• Recommendation language in the report itself, such as clinical correlation or a suggestion for vascular imaging when the mechanism warrants it, rather than silence.

This is where expert review of the original imaging earns its keep in litigation. Georgia’s expert-affidavit rule requires a radiologist to look at the same film the defendant looked at and say, under oath, what a reasonably careful read would have included.

What the ER is supposed to do when the film reads normal and the knee does not

The radiology read is one half of the workflow. The other half sits with the emergency physician who ordered the film. When the picture on the screen does not match the picture on the exam table, the standard of care does not end at the reassuring report.

One of the tools the standard of care contemplates is the ankle-brachial index, a ratio of blood pressure at the ankle to blood pressure at the arm. A ratio of 0.9 or higher is generally reassuring; a value below 0.9 prompts CT angiography of the affected leg. It takes a few minutes at the bedside, and in a mechanism-consistent injury with a swollen, painful knee, it is the kind of screening a careful ER visit generally includes.

Pulse checks are meant to be serial. One check at triage does not answer a question the artery may be answering slowly over hours.

And a vascular surgery consult, when the mechanism suggests it, is a phone call to make, not a plan to activate if the patient gets worse. In an injury where getting worse means losing a leg, “wait and see” is not a workup. None of this is medical advice for a reader to run at home. It is a description of what the standard of care generally requires when a swollen knee meets a normal-looking film, and it is the description an emergency medicine expert offers when a case like this reaches an affidavit.

The 8-hour window that decides whether a leg is saved

An analysis published in the Open Orthopaedics Journal, drawing on the seminal Green and Allen data, reports that circulation restored within eight hours of a popliteal injury is associated with an amputation rate of about 11 percent.

Beyond eight hours, the figure rises to roughly 86 percent.

Saturday afternoon, May 27, 2017: our client presents to the ER, is X-rayed, is read as normal, and is discharged with a knee brace.

Monday, May 29: he returns. The leg is swollen, discolored, and numb below the knee. The dislocation and the vascular injury are finally diagnosed.

Tuesday, May 30: he is transferred for emergency vascular surgery, and the surgeons cannot save the leg.

Legal pages cite the 86 percent figure the way weather forecasts cite chance of rain. On this case, by the time the second visit began, the number was already unreachable.

How radiology misreads and premature ER discharges become malpractice claims

Suit was filed in May 2019 in the State Court of Douglas County against the radiologist, the emergency physician, and both of their employers. The doctrine that pulls the employers in is respondeat superior, which makes an employer legally responsible for an employee’s on-the-job conduct. Two providers, two independent duties, and two employers on the hook.

That two-defendant architecture is not unique to knee dislocations. It repeats every time a subtle finding gets under-read by radiology and a busy ER discharges a patient whose exam did not match the film.

We handled another case in that category involving a high school senior whose head CT was read as unremarkable after a first-time seizure. A year later he had a stroke, and on a second read, the arteriovenous malformation that caused both events was visible on the original scan. The $9.9 million radiology settlement in that case turned on the same failure category as our knee case: a subtle vascular finding under-read on an overnight shift, with catastrophic delayed consequences. Past results do not guarantee future outcomes, and every case turns on its own facts.

And we handled a settlement of more than $3 million for a young mother whose ER visit for a foot injury ended in the amputation of her leg after the ER physician appeared unconcerned about abnormal vital signs and a rapidly deteriorating clinical picture. The delayed diagnosis was necrotizing fasciitis. The failure was the same seam in the workflow: what the exam was telling the ER did not match what the ER was telling the patient at discharge.

What Georgia law requires to bring a claim like this one

O.C.G.A. 9-3-71 sets the two-year statute of limitations for medical malpractice, measured from the date of injury, with a five-year outside limit under the statute of repose. Exceptions may apply, and deadlines can turn on facts a lawyer needs to review before the option forecloses.

O.C.G.A. 9-11-9.1 requires an expert affidavit to be filed with the complaint, from an expert who practices or teaches in the same specialty as the defendant. In a case with a radiologist and an emergency physician on the caption, that means one affidavit from a practicing radiologist and a second affidavit from a practicing emergency physician. Two subspecialty reviews have to line up before the complaint can leave the office. A firm that has never carried a two-specialty affidavit case tends to describe 9-11-9.1 as a filing formality. It is not. It is the operational reason a case like the missed knee dislocation leading to amputation in Georgia takes months of preparation before it exists as a lawsuit.

What compensation looks like after a through-knee amputation

A settlement in a case like this one is not paying a surgery bill. It is paying for a life reorganized around a missing limb.

• Past and future medical costs, including surgical revisions and complications that follow amputations of this level.
• Prosthetics across a lifetime. A lower-limb prosthesis is not a single device; the socket, foot, and knee unit each carry their own replacement schedules, and a person who loses a leg in their working years will replace components repeatedly.
• Rehabilitation, physical therapy, and home modifications, including ramps, grab bars, and vehicle adaptations.
• Lost earning capacity when the amputation forecloses work the person did before or slows the pace and hours they can sustain.
• Pain and suffering, including phantom pain, which is a real neurological consequence of amputation and not a figure of speech.

A life-care plan is what turns those categories into a number. It is built with an economist, a rehabilitation specialist, and, in cases involving amputation, a prosthetist who can price the components a specific patient will actually use. The Georgia non-economic cap discussed in the previous section is the reason a life-care plan matters. When the ceiling on pain and suffering is contested, the economic side of the ledger has to be documented in detail that survives cross-examination.

Questions Georgians ask after a leg amputation that started with a misread scan

These are the questions we hear most often from families in this fact pattern, answered honestly.

How many times can you dislocate your knee before surgery?

This question is usually asked about the kneecap sliding out of place, which is a patellar dislocation and different from what happened in the case discussed here. For recurrent patellar dislocations, surgeons often begin a surgical conversation after two or three episodes, depending on the anatomy. A full tibiofemoral dislocation, which is what this article covers, is generally treated as a medical emergency the first time it happens.

What happens if a dislocated knee isn’t treated in time?

The cascade can include vascular injury, nerve injury, and long-term joint instability. When circulation is lost long enough, the leg cannot be saved. Not every dislocation ends this way, and prompt recognition changes the arithmetic significantly.

What is the most common complication of a knee dislocation?

Vascular injury is the most feared and the most cited. Published ranges span roughly 20 to 40 percent. Nerve injury, most often to the common peroneal nerve, is reported in 10 to 40 percent of cases. The wide ranges reflect different definitions of injury and different patient populations across studies, not disagreement about the basic picture.

Will a knee ever be the same after a dislocation?

Outcomes vary widely. Many patients regain significant function; a share return to prior activity levels; some do not. Honest answers depend on the specific injury and the timing of care.

Can I sue a radiologist and an ER doctor for the same missed diagnosis?

In the right facts, yes. Both providers owe independent duties, and their employers can be liable through respondeat superior. Georgia’s expert-affidavit rule means an affidavit from each specialty is generally required. The body of this article walks through how that two-defendant architecture works in a case like ours.

How long do I have to file a medical malpractice claim in Georgia after a misread scan?

Generally two years from the date of injury under O.C.G.A. 9-3-71, with a five-year outside limit under the statute of repose. Exceptions can apply, and a lawyer should look at the timeline before the deadline forecloses the option.

How is a case like this investigated?

Records first, then experts. An independent radiologist re-reads the original imaging. An emergency physician reviews the ER standard of care. The vascular timeline is reconstructed against the ischemia clock. A life-care plan is built with an economist and a rehabilitation specialist. The affidavits are assembled before the complaint is filed, not after.

If a misread scan or a premature discharge changed your family’s life, we can talk

By the time a family reaches an article like this one, they have usually lived through more than a lawyer’s office can quickly summarize. Records requested and stalled. Follow-up appointments that answered some questions and raised more. Bills. A calendar rearranged around therapies. The sense that something went wrong at the beginning that no one has been willing to name.

The way Davis Adams works these cases is calm and sequential. Records come first, then subspecialty experts in radiology and emergency medicine, then affidavits, then filing. We do not ask families to diagnose what happened. That is what the experts are for.

We handle these cases on a contingency-fee basis; terms and expenses are outlined in the fee agreement. If you would like to talk through what an investigation involves, you can reach out to us here.

This article is for general informational purposes only and is not legal advice. Every case depends on its own facts, medical records, and expert review. Reading this page does not create an attorney-client relationship.