Arthroscopic excision of the osteoid osteoma at the distal femur.

Osteoid osteoma is a benign, osteoblastic and painful tumoral lesion. Apart from en-bloc resection, intralesional resection and percutaneous excision or destruction of the nidus, arthroscopic removal of the lesion in intraarticular locations have been reported. We present a patient with osteoid osteoma at distal femur which is accessible through knee joint, treated by arthroscopic complete excision.