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Simultaneous Bilateral Quadriceps Tendon Rupture Secondary to Parathyroid Carcinoma: A Case Report
Jason P Farrah1, Brian J Zirgibel, Phillip R Worts
1From the Ocala Health Trauma, Ocala Regional Medical Center, Ocala, FL (Dr. Farrah); the Department of Surgery, University of South Florida College of Medicine, Tampa, FL (Dr. Farrah); the Department of Surgery, University of Central Florida College of Medicine, Orlando, FL (Dr. Farrah); the Tallahassee Orthopedic Clinic, Tallahassee, FL (Dr. Zirgibel, Dr. Worts, and Dr. Wong); the Department of Clinical Sciences (Dr. Zirgibel and Dr. Wong); the Department of Nutrition and Integrative Physiology, The Florida State University, Tallahassee, FL (Dr. Worts); the Institute of Sports Sciences and Medicine, The Florida State University, Tallahassee, FL (Dr. Worts); and the Northwest Florida Diagnostic Endocrinology, Tallahassee, FL (Dr. Zapata).
Simultaneous bilateral quadriceps tendon ruptures in a 31-year-old man were linked to hyperparathyroidism from parathyroid carcinoma. This case highlights the importance of investigating atypical injuries for underlying systemic causes.
Area of Science:
- Orthopedics
- Endocrinology
- Oncology
Background:
- Simultaneous bilateral quadriceps tendon ruptures are rare, often linked to trauma or systemic conditions.
- A 31-year-old male presented with bilateral quadriceps tendon ruptures and hyperparathyroidism.
- The hyperparathyroidism was secondary to parathyroid carcinoma, an extremely rare malignancy.

