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Italiano What is piriformis syndrome?
The piriformis muscle (m. piriformis) is located deep in the buttock. The sciatic nerve passes through or adjacent to it. When the muscle spasms, becomes inflamed, or hypertrophies, the nerve is compressed — producing pain that mimics sciatica.
According to research, piriformis syndrome accounts for 6–8% of all sciatica cases. It is often misdiagnosed as a disc herniation.
Symptoms
- Buttock pain that worsens when sitting
- Pain radiating down the back of the thigh
- Numbness and tingling in the leg
- Worsens when climbing stairs, squatting
- Spinal MRI — normal (no herniation!)
How MIBRAR® treats piriformis syndrome
CGF (growth factor) injection directly into the piriformis muscle and perineural space under ultrasound guidance. This relieves inflammation, restores microcirculation, and eliminates fibrotic changes in the muscle.
For chronic cases (>12 months), Lipogems® is added — stem cells for regeneration of damaged tissues and nerve decompression.
Frequently asked questions
How to distinguish piriformis syndrome from a disc herniation?
Key difference: with a disc herniation, MRI shows protrusion/herniation. With piriformis syndrome, spinal MRI is normal. Diagnosis: FAIR test (pain with internal rotation of flexed hip), piriformis ultrasound, diagnostic block.
How many procedures are needed?
Usually 1–2 CGF procedures 4–6 weeks apart. For chronic cases — a single Lipogems® injection. Effect develops in 2–4 weeks and lasts 1–3 years.
Can I exercise after treatment?
Light activity — after 2–3 days. Full training — after 3–4 weeks. A mandatory piriformis stretching program and gluteal strengthening exercises are prescribed to prevent recurrence.