Incidence of the piriformis syndrome in patients with sacroiliac dysfunction
POSTER FOR THE SPINE & PERIPHERAL NERVES SECTION OF THE AMERICAN ASSOCIATION OF NEUROLOGICAL SURGEONS.
Michael A. Amaral, MD, FACS; Alan B. Lippitt, MD; Vicki Sims, PT.
Sacroiliac dysfunction accounts for about 15% of low back pain patients. The pain is typically posterior, in the area of the sacroiliac joint. It may irradiate in the groin and toward the knee. A subset of patients also presents with sciatica-like pain which, to date, has remained unexplained. The diagnosis is usually made by a fluoroscopically guided sacroiliac intra-articular block. An improvement of 75% or better is considered diagnostic while an improvement of 50% to 74% is considered equivocal. Responses below 50% generally rule out this diagnosis. Read More