Pellegrini Stieda Disease

Pellegrini-Stieda lesions, named after early twentieth century Italian and German surgeons Augusto Pellegrini and Alfred Stieda, are defined as ossifications of the medial collateral ligament (MCL) at or near its proximal insertion on the medial femoral condyle.[1] While the eponym is credited to Pellegrini and Stieda, historically, the process was first described by Kohler in 1903, prior to the publications of its namesakes. Pellegrini-Stieda Disease (or syndrome) is defined as the combination of the aforementioned radiographic findings and concomitant medial knee joint pain or restricted range of motion.