This eponym refers to avulsion of the medial femoral condyle at the origin of the medial collateral ligament. With Pelligrini-Stieda disease, chronic trauma (and tears) to the medial collateral ligament produces ossification.

A	Oblique radiograph of the knee. The typical appearance of severe Pelligrini-Stieda disease.

Links to online textbooks

• Wheeless' Orthopedics: discussion of medial collateral ligament injuries

References:

• Wang JC, Shapiro MS: Pellegrini-Stieda syndrome Am J Orthop. 1995 Jun;24(6):493-7.           [See related articles]
• Niitsu M, Ikeda K, Iijima T, Ochiai N, Noguchi M, Itai Y: MR imaging of Pellegrini-Stieda disease Radiat Med. 1999 Nov-Dec;17(6):405-9.           [See related articles]

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