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Published on: May 21, 2013
Osteoid osteoma of the patella: a case report
Panagiotis G Vallianatos1, Anastasia C Tilentzoglou, Savvas V Seitaridis
1Sports Injuries Department, KAT Hospital, Athens, Greece.
Abstract:
Though osteoid osteoma is a common primary benign lesion of the bones, intra-articular involvement is rare and poses diagnostic difficulties when it affects middle-aged patients. We present the case of a 51-year-old woman with a 2.5 year history of anterior knee pain that was misdiagnosed as osteochondritis dissecans. Radiological findings were absent, whereas MRI showed a well-circumscribed lesion. A local excisional biopsy was performed and microscopic appearance confirmed diagnosis.