Piriformis Syndrome — When Deep Buttock Pain Strikes
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Pain that starts deep in the buttock
Piriformis syndrome is a condition in which the piriformis muscle, located deep in the pelvis, becomes tight or hypertrophied and compresses the sciatic nerve that passes just beneath or through it, producing pain radiating into the buttock and posterior thigh.
Differentiating from sciatica due to disc herniation
The symptoms of piriformis syndrome closely resemble sciatica caused by a lumbar disc herniation. Pain extends from the buttock down the posterior thigh and sometimes into the calf. The key difference is that the cause lies in the pelvis (piriformis), not in the lumbar spine.
- Lumbar disc sciatica: Worsens with forward bending of the lower back; MRI confirms disc protrusion.
- Piriformis syndrome: Worsens with prolonged sitting; lumbar MRI is normal; FAIR test is positive.
- FAIR test: Flexion, adduction, and internal rotation of the hip stretches the piriformis and reproduces the symptoms.
- Difficulty sitting: Sitting on a hard chair for long periods compresses the piriformis and worsens pain.
Korean medicine treatment: relaxing the piriformis is key
The treatment goal is to relax the tight piriformis and relieve compression on the sciatic nerve.
- Acupuncture: Deep needling techniques at points such as Huantiao (GB30) reach the piriformis to release muscle knots.
- Chuna manipulation: Muscle Energy Technique (MET) and strain-counterstrain release the piriformis.
- Pharmacopuncture: Anti-inflammatory herbal solutions are injected into trigger points within the piriformis to relieve tightness and inflammation simultaneously.
- Moxibustion: Warming stimulation increases blood flow in deep muscles and promotes clearance of metabolic waste.
The importance of piriformis stretching
In-clinic treatment must be paired with home stretching of the piriformis. Lying on your back, place the ankle of the affected side on the opposite knee and pull the opposite thigh toward the chest until you feel a stretch deep in the buttock. Holding this for 30 seconds, three times a day, effectively relieves piriformis tension.
Prolonged sitting is the underlying cause
Piriformis syndrome is closely tied to a sedentary lifestyle. Simply standing up and moving for 10 minutes after every 50 minutes of sitting can greatly reduce recurrence.