The piriformis is a small muscle deep in the buttock that helps rotate the thigh outward. The sciatic nerve passes right through or beside it on its way into the leg, so when the piriformis is tight or goes into spasm, it can irritate that nerve — a form of sciatica caused by the muscle itself rather than the spine.
Recognizing it
A deep, sometimes burning pain in the buttock that can travel down the back of the thigh, often worse when sitting cross-legged or rotating the thigh outward. Because sciatica can also come from a back problem like a herniated disk, a clinician will typically check your back as well, sometimes with imaging, to make sure the irritation is really coming from the piriformis and not the spine.
Early management
Ice for 20–30 minutes, rest, and anti-inflammatory medication or a muscle relaxant if needed.
Rehab progression (can start right away)
- Piriformis stretch: lying on your back, crossing the injured ankle over the opposite knee, and gently pulling that knee toward your chest.
- Standing hamstring stretch to ease tension along the back of the thigh, which shares fascial connections with the piriformis.
- Pelvic tilts and partial curls to build core support around the pelvis.
- Prone hip extension: lying face down and lifting one straightened leg a few inches, building strength in the glutes that support proper hip rotation.
Return to sport once you have full, pain-free range of motion and strength matching the unaffected side. A proper warm-up and regular stretching of the muscles that rotate the hip help prevent a recurrence.
Piriformis syndrome Rehab exercices
This page is educational and general in nature and does not replace an individualized evaluation — see our medical disclaimer.