Sciatic Nerve Compression Due to Proximal Femoral Solitary Osteochondroma: A Case Report and Literature Review

Sciatica is a radiating pain that starts from the buttock to the legs. Any condition that affects the sciatic nerve within its intraspinal or extraspinal course may cause sciatica. The most common etiology is the lumbar disc herniation; however, bone tumors around the hip joint are rarely reported. Herein, we report a case of solitary osteochondroma of proximal femur that caused sciatic nerve entrapment. The diagnosis was delayed due to the low level of suspicion and incorrect diagnostic imaging. Patients with sciatica should be thoroughly evaluated and extraspinal causes including space-occupying lesions along the course of the sciatic nerve should be kept in mind, particularly when the symptoms do not respond to conservative management in recalcitrant cases with negative lumbar imaging findings.