Abstract
A 21-year-old male had have a one-year history of persistent left hip pain that was aggrevated at night. The diagnosis was osteoid osteoma that was based on clinical examination, simple radiography, and computed tomography. Under spinal anesthesia, the tumor was localized using an image intensifier and its nidus was excised successfully using the burr down technique. We report upon a single case of arthroscopic excision of an osteoid osteoma using the burr down technique and the good result obtained at the 2 year follow-up.