Good result after surgical treatment of Pellegrini–Stieda syndrome

Ossification of the femoral attachment of the medial collateral ligament (MCL) of the knee with associated pain and restricted movements is rare and is characteristic of the Pellegrini-Stieda (PS) syndrome. Although in mild cases conservative treatment is often successful, patients with more significant bone formation and persistent symptoms require surgical excision. We describe a case of PS syndrome with a description of the surgical technique consisting of excision of the bony lesion and reconstruction of the MCL by using the adductor magnus tendon.