A Case Report of Benign Chondroblastoma of the Patella

Abstract

The authors experienced a case of benign chondroblastoma involving the patella. To our knowledge this is the third recorded benign chondroblastoma in this site.
The patient, a seventeen-year-old boy, was admitted with complaint of pain in the patella.
Roentgenograms revealed a multiloculated radiolucent area in the patella without cortical destruction.
Microscopically, there were polygonal or rounded stromal cells and small giant cells. There were also several areas of chondroid matrix which appeared to be derived from young chondroblasts.
Curettage and bone grafting was carried out and no evidence of recurrence ocurred clinically six months after operation.