Idiopathic Osteonecrosis of the Patella: A Case Report / 대한정형외과학회잡지

It is important to recognize idiopathic osteonecrosis or avascular necrosis of the patella not only because of its rarity but because a majority of the patients remain asymptomatic without treatment. The etiology of osteonecrosis is unclear. Certain conditions and diseases have been associated with osteonecrosis of the patella including the systemic administration of steroids, a fracture of the patella, a total knee arthroplasty and other traumatic conditions. The diagnosis is usually made with radiographs, MR imaging and a radioisotopic bone scan. It is believed to have a benign course and a favorable prognosis. We report for the first time in Korea a patient with idiopathic osteonecrosis diffusely involving the whole patella without any obvious cause.

The Results of Modified Brostrom Procedure for the Treatment of Chronic Lateral Ankle Instability / 대한족부족관절학회지

PURPOSE: This study was performed to evaluate clinical and radiographical results of treatment of chronic lateral ankle instability with modified Brostrom procedure. MATERIALS AND METHODS: This is a retrospective study of 22 cases in 22 patients treated with modified Brostrom procedure under the diagnosis of chronic lateral ankle instability from May 2000 to August 2004. Average age was 32.3 years. Average follow-up period was 23 months. Preoperative and postoperative radiographs of ankle anteroposterior view, lateral view and varus stress view were analyzed. The clinical evaluation was performed according to the Americal Orthopaedic Foot and Ankle Society scales. RESULTS: After the modified Brostrom procedure, Americal Orthopaedic Foot and Ankle Society scales score was improved by average 28 points. Among the 22 cases, 13 cases were excellent, 3 cases good, 4 cases fair, and 2 cases poor with satisfaction of 73%. Five cases had intermittent ankle pain of whom 3 cases had difficulty during competitive sports activity. Lateral tilting of talus improved by average 5.4 degrees on varus stress view. CONCLUSIONS: The modified Brostrom procedure is one of the most effective methods for treating of chronic lateral ankle instability.