Piriformis syndrome is the deep, nagging ache in one buttock that sometimes shoots down the back of the thigh and, understandably, gets called sciatica. The piriformis is a small muscle running from the sacrum to the top of the thigh bone, deep beneath the gluteus maximus, and the sciatic nerve runs directly underneath it — or, in some people, straight through it. When the muscle tightens, spasms or swells, it irritates the nerve. The result feels like sciatica, worsens with sitting, and often has a tender spot right in the centre of the buttock. It is a condition Pilates handles well, because the fix is a specific combination of release and strengthening rather than stretching alone — but only if you know which Pilates moves aggravate it.
Key takeaway: Pilates helps piriformis syndrome by combining gentle piriformis release (supine figure-four, seated pigeon) with strengthening of the glute muscles that the piriformis is compensating for (bridges, clams, side-lying leg lifts), plus nerve-friendly mobility. Avoid prolonged sitting, aggressive stretching, deep squats and lunges, rolling exercises and loaded twists while it is acute. Most people improve within a few weeks.
The most effective Pilates exercises for piriformis syndrome pair gentle release with glute strengthening. For release, use the supine figure-four stretch, a seated or modified pigeon, and slow supine hip rotations to ease the piriformis off the sciatic nerve. For lasting relief, strengthen the gluteus maximus and medius with glute bridges, clams and side-lying leg lifts so the small piriformis stops overworking, and add gentle sciatic nerve gliding to calm the nerve. Avoid deep squats, lunges, rolling exercises and loaded twists while it is acute. Sophie Mercer, PMA-certified clinical Pilates instructor, designed an 8-week Sciatica Relief protocol of 36 exercises that follows this release-then-strengthen sequence.
Is it piriformis syndrome or disc-related sciatica?
This is the first question to answer, because the two need different exercise. Both can produce buttock pain that runs down the leg. The distinguishing features of piriformis syndrome are:
- Pain is centred deep in the buttock, with a tender spot you can press
- It is worse with sitting, especially on hard surfaces, and after driving
- It is often worse with crossing the sore leg over the other, or with the hip turned inward
- There is usually no back pain to speak of, and bending forward does not particularly hurt
- It may have followed a fall onto the buttock, a period of heavy running or cycling, or a sudden increase in sitting
Disc-related sciatica, by contrast, usually starts with the back, is worse with bending, coughing and sneezing, and may come with numbness or weakness in the foot. If that sounds more like you, can Pilates help sciatica and the disc-specific guidance in is Pilates good for a bulging disc are the right starting points. The distinction matters because the flexion-based hip stretches that help the piriformis can worsen a disc. Deep, one-sided buttock pain without leg symptoms can also come from the SI joint — the exercises in SI joint pain exercises overlap with these, and the two conditions often coexist.
Why the piriformis tightens in the first place
The piriformis is small and it is not designed to be a primary mover. It rotates the hip outward and helps stabilise the pelvis. It becomes a problem when the bigger muscles around it — the gluteus maximus and, especially, the gluteus medius — are weak or inhibited, typically from long hours of sitting. The piriformis then takes on stabilising work it is not built for, fatigues, tightens, and squeezes the nerve. This is why stretching the piriformis on its own gives relief that lasts an afternoon: the underlying reason it tightened is still there. Every effective plan strengthens the glutes so the piriformis can relax, and the strengthening is covered in depth in glute strengthening exercises.
Pilates exercises for piriformis syndrome
Do this sequence daily during the acute phase, then three to four times a week. Every exercise should be pain-free or, at most, produce a mild, easing stretch. Anything that sends pain further down the leg is a signal to back off.
Release
- Supine figure-four stretch — lie on your back, cross the sore-side ankle over the opposite knee, and draw the opposite thigh toward you. Hold 30-45 seconds, 2-3 times. Feel: a deep stretch in the buttock that eases as you breathe. Avoid: forcing the range or lifting the tailbone; if tingling increases, ease off.
- Seated pigeon (chair version) — sit tall on a chair, place the sore-side ankle on the opposite knee, and hinge forward from the hips with a long spine. Hold 30 seconds. A good option at work, and gentler than floor pigeon.
- Supine hip rotations — on your back, knees bent, feet wide, let both knees fall slowly to one side and then the other. 8 each way. Feel: the hip rotating gently through range. This is a mobiliser, not a stretch.
- Knee-to-opposite-shoulder — on your back, draw the sore-side knee gently toward the opposite shoulder. Hold 20-30 seconds, 2-3 times. Stop short of any nerve pain.
Strengthen
- Glute bridge — knees bent, feet flat, hip-width. Lift to a straight line, squeeze 2-3 seconds, lower slowly. 10-12 reps. Feel: gluteus maximus; if you feel it in the hamstrings or lower back, bring the feet closer to the hips.
- Clam — lie on your side, knees bent, lift the top knee while the pelvis stays stacked. 12-15 each side. Feel: the side of the hip. Avoid: rolling back to lift higher; this exercise is about control, not height.
- Side-lying leg lift — top leg straight and in line with the body, lift 20-30 cm and lower for 3 counts. 10-12 each side. Builds the gluteus medius that the piriformis is standing in for.
- Prone glute squeeze with small leg lift — lie face down, squeeze the glutes, and lift one straight leg a few centimetres for 3 seconds. 8 each side. Avoid: arching the back to lift higher.
- Standing hip hinge — fold from the hips with a flat back and stand tall by squeezing the glutes. 10 reps. Teaches the glutes to do their job in standing.
Calm the nerve
- Sciatic nerve glide — sit tall on a chair, straighten the sore leg while looking up, then bend the knee as you tuck the chin. 10 slow, gentle reps. Feel: nothing dramatic — this is meant to be almost boring. Avoid: holding the stretched position; the movement is the medicine.
What exercises aggravate piriformis syndrome?
The aggravators fall into two groups: things that compress the nerve against the muscle, and things that make the piriformis grip harder.
- Prolonged sitting, hard chairs, a wallet or phone in the back pocket, and long drives
- Deep squats and lunges, particularly weighted, while the piriformis is acute
- Running on cambered roads and cycling with a low saddle, both of which overwork the hip rotators
- Heavy single-leg work — pistols, weighted step-ups — until the glutes are strong enough
- Aggressive stretching — pushing pigeon or figure-four into pain makes the muscle guard more, not less
- Lying on the sore side on a hard floor
- Pilates rolling exercises (rolling like a ball, seal, open-leg rocker), which compress the buttock repeatedly
- Loaded twists (saw, criss-cross, twist on the reformer), which torque the pelvis and can jam the hip
None of these needs to be avoided forever. They come back, one at a time, once the buttock has been quiet for a couple of weeks.
What is the fastest way to fix piriformis syndrome?
I would be suspicious of anyone promising an overnight fix, but there is a fastest reliable route, and it has three parts done together rather than in sequence. First, remove the compression: stand up every 30 minutes, take the wallet out of the back pocket, and put a cushion on hard chairs. Second, release daily: the figure-four and seated pigeon above, gently, twice a day. Third — and this is the part most people skip — strengthen the glutes from day one, because that is what stops the muscle re-tightening. Add heat before exercise and a tennis ball rolled gently under the buttock (not on the nerve itself) if it helps. Most people feel real change within two to four weeks; full resolution typically takes two to three months, and a good deal longer if you only stretch.
When to see a clinician
Get assessed before continuing if you have numbness or weakness in the foot, pain that started in the back rather than the buttock, pain following a fall or trauma, any change in bladder or bowel control, or symptoms in both legs. A physiotherapist can also confirm the diagnosis — piriformis syndrome is a diagnosis of exclusion, and a surprising amount of “piriformis pain” turns out to be the lumbar spine, the SI joint, or the gluteal tendons on the outside of the hip.
How the Sciatica Relief protocol helps
Sophie’s 8-Week Sciatica Relief Program is built for both sources of sciatic pain — disc and piriformis — and follows the sequence in this article across 36 exercises: a first phase of nerve calming and piriformis release, then progressive glute and pelvic strengthening so the piriformis is no longer doing a job it was never designed for. If your buttock pain sits closer to the dimples of the lower back, the 8-Week SI Joint Pain programme addresses the joint that often shares the blame, and if the whole lower back is involved, the 8-Week Lower Back Pain programme covers the broader picture.
This article is for informational purposes only and does not constitute medical advice. Buttock and leg pain can arise from the spine, the sacroiliac joint, the hip or the piriformis; if your pain came on after an injury, involves numbness or weakness, affects both legs, or is not improving, please consult a physiotherapist or doctor before beginning or continuing an exercise programme.