Osteochondroma of femoral neck- a rare cause of femoroacetabular impingement and sciatic nerve compression

Abstract

Osteochondroma or exostoses is most common Primary benign bone tumor and comprising of more than one-third of Primary benign bone tumors. They usually arise from metaphysis of long bone. They are mostly asymptomatic depending on their size and location. This article presents a noble case of Osteochondroma originating from the lesser trochanter of femur leading to development of mechanical blockade and sciatic neuropathy. Associated symptoms and radiographic findings were consistent with femoro- acetabular impingement and sciatic nerve compression. A 26 year old female presented to our Orthopaedic clinic with complain of pain in left groin and tingling of left lower extremity for last one year. Radiographic finding was consistent with femoro-acetabular impingement caused by large proximal femoral Osteochondroma. Surgical en-bloc resection was performed and post-operatively symptoms resolved dramatically. Histopathological report confirmed the diagnosis of Osteochondroma .So we should aware of rare entities such as proximal femoral Osteochondroma during diagnosis and treatment of femoro-acetabular impingement syndrome and sciatic neuropathy along with other more common aetiology.