Osteoid osteoma of the proximal femur: new techniques in diagnosis and treatment.

The nonspecific symptoms and radiographic findings associated with osteoid osteoma in the proximal femur mimic inflammatory conditions and delay diagnosis. A review of four cases showed high resolution computerized axial tomography in conjunction with a radioisotope bone scan best demarcated the location and size of the lesion. The combination of careful preoperative localization and intraoperative use of a radiation probe made adequate resection possible while limiting the amount of bone excised. This technique eliminated the need for internal fixation and reduced the duration of the recovery period.