Sciatic neuropathy secondary to total hip arthroplasty wear debris

Sciatic neuropathy after total hip arthroplasty can result from several cau ses. We present a care in which a large cystic mass developed around a fail ed total hip arthroplasty. The lesion extended through the greater sciatic notch and into the pelvis producing sciatic nerve compression. The diagnosi s was delayed, and the patient underwent a laminectomy without relief of sy mptoms before an abdominopelvic computed tomography (CT) scan revealed the mass. After revision of the components and excision of the accessible porti on of the lesion, the symptoms improved. Resolution of the intrapelvic port ion of the mass was demonstrated on follow-up CT scan, suggesting that retr operitoneal resection of this type of lesion may not be required at the tim e of revision of the components.