What it is

Piriformis syndrome, part of deep gluteal syndrome, refers to buttock pain sometimes radiating down the leg when the sciatic nerve is irritated near the piriformis muscle.

Symptoms often follow prolonged sitting, hill running, or changes in training.

What happens when it occurs

Local muscle spasm or hypertrophy narrows the space around the sciatic nerve, increasing sensitivity. Improving hip mechanics and tissue tolerance reduces symptoms.

Common causes and risk factors

  • Prolonged sitting and long drives
  • Hill running, speed work, or rapid training changes
  • Hip stiffness or weakness in abductors and rotators

Who is most affected

Runners, office workers with long sitting times, and people with prior low back or hip issues.

Typical symptoms

  • Deep buttock pain sometimes with tingling down the back of the thigh
  • Pain with sitting, uphill walking, or crossing the leg
  • Tenderness near the sciatic notch

When to seek care

If symptoms persist beyond two weeks, if progressive numbness or weakness occurs, or if night pain develops.

How we diagnose

History and examination including seated piriformis stretch test and active resistance tests.

Imaging is used to exclude lumbar or hip joint causes if needed.

Management

  • Reduce prolonged sitting and add standing breaks
  • Strengthen hip rotators and abductors, improve stride mechanics
  • Neural mobility drills when appropriate

Rehabilitation milestones

Phase 1 weeks 0 to 2: reduce sitting, isometrics, gentle mobility.

Phase 2 weeks 2 to 6: heavy slow hip strength, neural mobility as tolerated.

Phase 3 weeks 6 to 10: graded running and hills with technique cues.

Phase 4 weeks 10 to 14: full workload.

Readiness to progress

  • Sit for usual durations without pain
  • Run easy hills without symptoms
  • Hip rotation strength within 90 percent

Prevention

  • Break up long sitting periods
  • Maintain hip rotation strength and stride mechanics
  • Progress hills and speed in small steps

Australia snapshot

  • Less common than joint and tendon causes of buttock and leg pain
  • Runners with hill exposure and long-distance drivers feature in caseloads
  • Good response to strength and movement retraining

Latest insights

Address sitting exposure and stride mechanics first, then add strength and neural mobility.

Differentiate from lumbar and hip joint sources when symptoms radiate below the knee.

Frequently Asked Questions

Most improve in 6 to 12 weeks with strength and sitting changes. Long-standing cases may take longer.

Yes, stay on flat routes first, limit hills, and use shorter strides. Build distance gradually.

Only if the diagnosis is uncertain or if neurological signs develop. Imaging helps exclude spine and joint causes.

Gentle piriformis and hip external rotation stretches held short of pain, combined with rotator and abductor strengthening.

Raise seat height, use breaks every 30 to 60 minutes, and avoid crossing the legs.

Use standing breaks and seat adjustments. Stop driving to move if symptoms rise.

Progressive numbness, weakness, or bladder or bowel change need urgent review.