Simultaneous Bilateral Knee Extensor Mechanism Injury in a Young Male: A Clinical Diagnosis and Literature Review.

Introduction: Simultaneous quadriceps tendons with contralateral patellar tendon ruptures are extremely uncommon. We present a rare case of a male with bilateral simultaneous knee extensor mechanism injuries following a fall who is known to have a systemic end-stage medical disease.

Case report: A 36-year-old African male is known to have end-stage renal disease following bilateral congenital kidney disease. He receives hemodialysis 3 times a week at our academic hospital renal unit. He presented at our casualty with bilateral knee pains, knee swelling, and an inability to mobilize both legs. He had an inability to extend his knee, a palpable gap along the patella tendon on the left, and a palpable gap in the right quadriceps tendon. We performed plain radiographs to confirm the clinical diagnosis.

Conclusion: We experienced a simultaneous rupture of the quadriceps tendon with the contralateral patellar tendon in a 36-year-old with chronic renal failure on hemodialysis. Surgical repair was performed earlier, and he achieved good functional outcomes.