A 16-year-old boy presented with a patellar mass and anterior knee pain without any trauma. On physical and radiologic assessment, a mass at the superolateral edge of the patella and a hyperintense lesion on T2 sequences of magnetic resonance imaging was detected. Excisional biopsy revealed a chondroma of patella. Primary bone tumors of the patella are extremely rare and occurence of chondroma in this localization is very uncommon. Although anterior knee pain is a very frequent and usually harmless, it is essential to consider the more severe disorders such as bone tumors.
Departments of *Orthopaedics and Traumatology
‡Pediatrics, Canakkale 18 Mart University, Canakkale
†Department of Orthopaedics and Traumatology, Afyon Kocatepe University, Afyon
§Department of Physical Medicine and Rehabilitation, Bozok University, Yozgat, Turkey
The authors declare no conflict of interest.
Reprints: Burak Kaymaz, MD, Department of Orthopaedics and Traumatology, Canakkale 18 Mart University Education and Research Hospital, 17110 Kepez, Canakkale, Turkey (e-mail: firstname.lastname@example.org).
Received February 24, 2013
Accepted March 13, 2013