Rectus Femoris Quadriceps Muscle Rupture Reconstruction With Semitendinosus Autograft and Achilles Allograft.

Rectus femoris musculotendinous junction injuries occur at the interface between the muscle fibers and the tendon of the rectus femoris muscle. These types of injuries can result from acute trauma or repetitive microtrauma, leading to muscle retraction, fibrosis, muscle fiber degeneration, and chronic inflammation. Management of these injuries typically involves conservative treatment, including rest, ice, compression, and elevation, followed by a structured rehabilitation program. Surgical intervention is required when conservative measures fail and in cases of complete tendon avulsion or chronic, nonhealing injury. Although few clinical outcomes have been reported on the surgical management of chronic rectus femoris musculotendinous junction injury, reconstruction may be a viable salvage option for active patients with this injury. This technical note highlights our technique for rectus femoris musculotendinous junction reconstruction with semitendinosus autograft and Achilles allograft for a chronic rectus femoris myotendinous junction rupture.