Researchers Detail Rare Diabetic Leg Complication

A case study involving a 76-year-old patient sheds light on denervation pseudohypertrophy in diabetic patients.

Updated on Oct. 21, 2026 in Diabetes

Isometric editorial illustration showing a cross-section of anatomical muscle tissue with healthy fiber clusters and lipid cells side by side. — Medical researchers have identified diabetic neuropathy as the primary cause of denervation pseudohypertrophy, a condition where muscle fibers are replaced by fat. AI Illustration. Upload story photo >

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In March 2024, medical researchers documented a rare case of denervation pseudohypertrophy in a 76-year-old man in Fort Worth who experienced sudden calf swelling. Doctors successfully ruled out deep vein thrombosis as the source of the patient's severe leg pain.

Why it matters

Researchers identified diabetic neuropathy as the primary driver behind the condition, which occurs when muscle fibers shrink and are replaced by fat cells. Understanding this mechanism helps clinicians differentiate between potentially life-threatening clotting and this specific neurological complication.

The patient presented with a 140 mg/dL random blood glucose level and a 2-inch difference in calf circumference between his left and right legs. This condition was confirmed via MRI showing fat infiltration within muscle tissue.

The players

Burnett School of Medicine

This institution is a medical school located in Fort Worth that contributed to the research of this patient case.

Texas Christian University

This private university in Fort Worth provided institutional support for the clinical case investigation.

Texas Tech University Health Sciences Center

This public health-focused university system collaborated on the medical research report.

Radiology Associates of North Texas

This physician group provided the imaging expertise required to diagnose the rare muscle condition.

The details

The patient, who has a history of type 2 diabetes and chronic venous insufficiency, reported an 8 out of 10 pain rating during his initial consultation. His symptoms eventually resolved over a four-week period without formal medical intervention.

1970: The patient suffered a left shinbone fracture.
2016-2018: The patient underwent two separate varicose vein surgeries.
March 2024: The patient consulted a medical team regarding his leg symptoms.
February 2026: Researchers published the official case report in Sage Open Medical Case Reports.

The Big Picture

This case report contributes to the broader evolution of the diagnostic protocols for diabetic neuropathy. By documenting rare muscle fat replacement, the study provides a new reference point for physicians managing long-term complications in diabetic patients.

Patients with type 2 diabetes should note that sudden leg swelling may not always indicate a blood clot, though a professional ultrasound is still required to rule out emergencies. This research highlights the importance of keeping blood glucose levels stable to mitigate the risk of nerve-related tissue changes.

The takeaway

Clinicians and patients should remain aware that diabetic neuropathy can manifest as complex musculoskeletal changes that mimic other diseases. Monitoring limb circumference and reporting unusual pain can assist medical professionals in accurate diagnosis and recovery planning.