ARTHROSCOPIC RESECTION OF A CHONDROBLASTOMA IN THE KNEE

A 13-year-old boy with the diagnosis of osteochondritis dissecans unde rwent arthroscopic examination of his knee joint. At surgery a cartila ginous mass in the medial femoral condyle was identified. Biopsy sampl es confirmed the diagnosis of chondroblastoma, which was removed compl etely through the arthroscope. A second arthroscopic examination of th e knee was conducted at 6 months, and showed no residual disease. Clin ical and radiographic follow-up of the affected joint 5 years after su rgery was satisfactory. Arthroscopic removal of an intra-articular tum or is an attractive treatment alternative, provided the lesion is acce ssible and there is no suggestion of a malignancy.