Abstract
Introduction : Quadriceps tendon rupture is a relatively rare lesion. Here we report two cases of this injury that required surgical repair.
Cases : Case 1 : A 58-year-old man with a history of renal transplantation sprained his left knee when coming downstairs. His knee had swollen, and he was unable to extend it. He came to our hospital one month after injury. On the basis of clinical evaluations, X-ray and magnetic resonance imaging, we diagnosed a quadriceps tendon rupture, and performed surgery. We repaired the tendon rupture by suturing the tendon to the patella using pull-out of the ethibond suture through the drill hole. In addition, we added augmentation using the semitendinosus tendon. Two weeks after the operation, the patient started range of motion exercise. Four weeks after the operation, he started weight-bearing. Case 2 : A 68-year-old man without a history of major illness sprained his right knee while descending a slope. He suffered severe pain and difficulty with movement of the right knee. On the basis of clinical evaluations, X-ray and magnetic resonance imaging, we diagnosed a quadriceps tendon rupture. Eight days after injury, surgery was performed using a procedure similar to that for case 1, followed by a similar course of rehabilitation.
Results : In both cases, six months after surgery, the range of knee motion was satisfactory, without extension lag.
