Abstract Quadrupled hamstring tendon is one of the most commonly used ligamentous substitutes in anterior cruciate ligament reconstruction. We describe a case of a young athlete who sustained a rerupture of a semitendinosus-gracilis autograft fixed with biodegradable screws 2 years after primary surgery. Radiologic, arthroscopic, histologic, and electromicroscopic investigation showed tendon-to-bone healing of the soft tissue graft and partial degradation of the interference screws.
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