Piriformis Syndrome

Overview

The piriformis is a small, flat muscle deep in the buttock that runs from the sacrum to the top of the thigh bone and helps rotate the hip outwards. The sciatic nerve passes directly beneath it — and in some people, through it. When the piriformis becomes tight, overworked or in spasm, it can press on or irritate the nerve, producing deep buttock pain and sciatica-like symptoms down the leg.

Piriformis syndrome is sometimes called "deep gluteal syndrome", since nearby structures can be involved too. It typically affects people who sit for long periods (students, drivers, office workers), runners and cyclists, and those who have had a fall onto the buttock. Unlike disc-related sciatica, the back itself is usually not painful and bending forward does not make it worse; instead, sitting on a hard surface, sitting with a wallet in the back pocket, and climbing stairs are the usual triggers.

Because it mimics other causes of sciatica, a careful assessment matters. Once confirmed, it generally responds well to hands-on treatment, dry needling and a programme that restores hip strength and flexibility.

Causes and risk factors

• Prolonged sitting, especially on hard surfaces or with legs crossed
• Running, cycling or hill walking that overworks the hip rotators
• Weak gluteus maximus and medius, leaving the piriformis to do extra work
• A fall or direct impact to the buttock
• Anatomical variation where the sciatic nerve passes through the muscle
• Leg-length difference or altered walking pattern
• Previous hip or lower back problems

How we may be able to help

We assess the lumbar spine and nerves first to rule out a disc or spinal cause of your symptoms. We then test the piriformis directly with resisted and stretch positions that reproduce the deep buttock pain, check hip range and gluteal strength, and feel for tight bands in the muscle.

Our physiotherapists use soft-tissue release and manual therapy to the piriformis and surrounding deep rotators, together with hip joint mobilisation if the joint is stiff. Dry needling is often helpful here: placing a fine needle into the tight band of the piriformis may give a noticeable release of the deep ache and leg symptoms. A graded programme then builds gluteal strength and hip mobility so the piriformis is no longer overloaded.

Our chiropractor can address stiffness in the sacroiliac joint and lower lumbar spine, which often accompanies piriformis tightness. Interferential therapy may be used to settle pain and spasm in the buttock. Cupping can also be used as an adjunct to ease deep gluteal tension.

What you can do at home

• Take sitting breaks every 30 minutes, and avoid sitting on your wallet or on hard surfaces
• Use a tennis ball or massage ball under the buttock to release the tight spot for 1–2 minutes
• Do a figure-four stretch: lying on your back, cross one ankle over the other knee and draw the legs towards you
• Strengthen your glutes with bridges and clam exercises
• Reduce running and cycling volume temporarily while symptoms settle
• Apply heat to the buttock for 15–20 minutes to help the muscle relax