Muscle deep-dives
Piriformis trigger points: referred pain, palpation and release
A clinical deep-dive on Piriformis: trigger point locations, the referred pain pattern they produce, palpation landmarks, activating factors and an evidence-based release protocol.
Published:
Why this muscle causes pain
Runs from the anterior sacrum to the greater trochanter. External rotator of the hip in extension, abductor in hip flexion. The sciatic nerve passes beneath (or in some people, through) the muscle, which is why trigger points and tightness can produce neural-like symptoms.
Where the trigger points sit
Belly of the muscle deep in the buttock, midway between the sacrum and the greater trochanter.
The referred pain pattern
Deep buttock pain, sacroiliac region, sometimes down the posterior thigh in a sciatica-like pattern but typically stopping above the knee.
How to find it by palpation
Side-lying with the hip flexed and adducted, palpate deep to the gluteus maximus. FAIR test (flexion, adduction, internal rotation) often reproduces symptoms.
What sets it off
Prolonged sitting on hard surfaces, sudden change in running volume, hip impingement, sacroiliac dysfunction.
Self-care that actually helps
Figure-4 stretch, ball release, hip control work. Clinically: needling, soft-tissue release, address contributing pelvic mechanics.
Symptoms this muscle produces
Clinically, this muscle turns up in the workup of appendicitis-like pains, buttock pain, impotence due to nerve entrapments, painful intercourse, pelvic pain and sciatica. Those are the complaints its referral zone overlaps, which is why a patient may present with any of them and never mention the muscle itself.
Muscles covered
Studies cited
Every claim in this article traces back to one of the sources below.
- Kietrys 2013 — Effectiveness of dry needling for upper-quarter myofascial pain: a systematic review and meta-analysis. J Orthop Sports Phys Ther 2013;43(9):620-34 ↗
- Gattie 2017 — The effectiveness of trigger point dry needling for musculoskeletal conditions by physical therapists: a systematic review and meta-analysis. J Orthop Sports Phys Ther 2017;47(3):133-49 ↗
- Boyles 2015 — Effectiveness of trigger point dry needling for multiple body regions: a systematic review. J Man Manip Ther 2015;23(5):276-93 ↗
- Charles 2019 — A systematic review of manual therapy techniques, dry cupping and dry needling in the reduction of myofascial pain and myofascial trigger points. J Bodyw Mov Ther 2019;23(3):539-46 ↗
- Cagnie 2013 — Physiologic effects of dry needling. Curr Pain Headache Rep 2013;17(8):348 ↗
- Fernández-de-las-Peñas 2019 — Trigger point dry needling for the treatment of myofascial pain syndrome: current perspectives within a pain neuroscience paradigm. J Pain Res 2019;12:1899-911 ↗
- Shah 2015 — Myofascial trigger points then and now: a historical and scientific perspective. PM R 2015;7(7):746-61 ↗
- Halle 2016 — Pertinent dry needling considerations for minimizing adverse effects. Int J Sports Phys Ther 2016;11(5):651-62 ↗
- Boyce 2020 — Adverse events associated with therapeutic dry needling. Int J Sports Phys Ther 2020;15(1):103-13 ↗
- Hong 1994 — Lidocaine injection versus dry needling to myofascial trigger point: the importance of the local twitch response. Am J Phys Med Rehabil 1994;73(4):256-63 ↗
- Simons & Travell — Myofascial Pain and Dysfunction: The Trigger Point Manual (2nd ed.). Williams & Wilkins, Baltimore ↗
