Presentation
Recurrent twisting injury with medial knee joint pain and restricted range of motion.
Patient Data
Age: 15 years
Gender: Male
From the case:
Pellegrini-Stieda syndrome
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A mass displaying mainly hypointense signals on T1 and PD FS and signal void on T2*weighted sequences is seen adjacent and medial to the MCL origin from the medial femoral condyle, consistent with ossified Pellegrini-Stieda lesion.
Case Discussion
Ossification in Pellegrini-Stieda disease is not confined to the tibial collateral ligament but may also involve the adductor magnus tendon. In some cases, it can be related to the anatomic proximity (overlap) of the fibers of these two structures. Pellegrini-Stieda disease should not be regarded as synonymous with ossification of the tibial collateral ligament.
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