Benign Chondroblastoma of the Patella

Abstract

A case of benign chondroblastoma was reported. A 12 year-old girl visited our clinic because of her right knee pain. She felt knee pain when she was running the day before.
Radiographic examination revealed radiolucent defect with thin slightly sclerotic margin and pathologic fracture of the right patella. She was treated with curretting and autogenous bone-graft. The radiogram showed no abnormality 15 months after the operation.
Histologic examination of the tumor was done and answer of the pathologist was giant cell tumor. The tumor was re-examined in Fukuoka university, because the macroscopic finding of the tumor was not thought giant cell tumor. The result of the reexamination was benign chondroblastoma.