Simultaneous Quadriceps Tendon Rupture, Contralateral Patellar Tendon Rupture, and Lateral Meniscus Tear Following a Single Fall: A Case Report.

Simultaneous ruptures of the quadriceps tendon and contralateral patellar tendon are exceedingly rare, particularly in patients without serious comorbidities or other known predisposing factors. We present the case of an obese 31-year-old man without metabolic syndrome or any other known predisposing risk factors who suffered a right quadriceps tendon rupture and simultaneous left patellar tendon rupture, and tear of the anterior horn of the left lateral meniscus. These injuries occurred while walking downstairs and missing a step. He presented with bilateral knee pain, ecchymosis, and the inability to extend either leg. The diagnosis was confirmed by imaging, and he underwent surgical repairs of both tendons as well as the left lateral meniscus. Thereafter, the postoperative course was uncomplicated. By six months post-surgery, he was able to regain full range of motion in both knees with minimal pain and a normal gait. This case highlights the importance of early recognition, prompt surgical intervention, and structured rehabilitation in achieving optimal recovery in a complex and rare extensor mechanism injury.