A Case Report on Surgical Excision of Intracapsular Osteochondroma of Femur Neck using Mini-Arthrotomy without Hip Dislocation in a Young Female with Hereditary Multiple Exostoses.

INTRODUCTION: Osteochondromas are the most common benign bone tumors. They probably are developmental malformations rather than true neoplasms and are thought to originate within the periosteum as small cartilaginous nodules. The lesions consist of a bony mass produced by progressive endochondral ossification of a growing cartilaginous cap. Osteochondromas usually are found on the metaphysis of a long bone near the physis such as distal femur, proximal tibia, and proximal humerus. Surgical treatment for femur neck osteochondroma is difficult due to the high risk of avascular necrosis following excision. These lesions in femur are in close proximity to important neurovascular bundle and can cause symptoms related to their compression. Furthermore, the symptoms related to labral tear and hip impingement are common. Recurrence is rare and is caused by failure to remove the entire cartilaginous cap.

CASE REPORT: A 25-year-old female presented with the complaints of pain in the right hip and difficulty in walking and running for 1 year. On radiological examination, the right femur neck osteochondroma was diagnosed, it was located along the posteroinferior margin of the femur neck. Surgical removal of the lesion was done in lateral decubitus position using posterolateral approach to hip without dislocation of the femur.

CONCLUSION: Osteochondroma at femur neck can be safely removed without surgical hip dislocation. It's necessary to remove it completely to avoid recurrence.