Tight piriformis, weak glutes.
That's the whole thesis.
Most piriformis pages tell you to stretch harder. This one tells you to strengthen the glute medius first, and that's why the 12-minute strengthen-stretch combo is the routine the homepage leads with.
Oliver Wakefield-Smith, not a clinician
I'm the founder of Digital Signet. I research and write evidence-based consumer health content. I am not a physiotherapist, an osteopath, a doctor, or a sports therapist, and this site is not me pretending to be one. What I am is a person who has read the piriformis literature carefully, paid attention to where stretching-only advice falls short, and built a follow-along timer around the protocol that actually moves the needle.
The differentiating idea, and the reason this site exists rather than a thousand others: piriformis tightness is almost always a symptom of weak gluteus medius. The piriformis is a small deep external rotator. When the much larger glute med fails to stabilise the pelvis, the piriformis gets recruited for stabilising work it wasn't built for, and it tightens chronically. Stretching alone treats the symptom. The strengthen-stretch combo treats the cause, and that is the routine the homepage leads with. Every other site I read either stops at stretches or buries the strengthening at the bottom; here it's the hero.
Every clinical claim on this site links to its primary source: PubMed-indexed trials, Cochrane reviews, NICE guidelines, established physical therapy texts. If you spot something wrong, email oliver@digitalsignet.com and I'll fix it within 24 hours.
Cochrane, PubMed, NICE, in that order
The hierarchy of evidence I work with, in descending preference: Cochrane systematic reviews, peer-reviewed trials indexed on PubMed (preferring randomised trials and systematic reviews), NICE guidelines for UK clinical practice, established physical therapy textbooks. I do not cite blog posts, social media physios, or news articles in clinical claims. If a number appears anywhere on this site (hold duration, percentage of population with anatomical variation, reps), it traces to a primary source on the references page.
The site is reviewed in full each time it is updated; the last reviewed date appears at the bottom of every page and in the byline at the top. Changes to clinical guidance trigger a content review across the whole site, not just the page that triggered it.
Not a substitute for a physiotherapist
This site supplements professional care; it does not replace it. The routines here are general protocols that fit the average case of piriformis tightness. They are not personalised medical advice. They cannot examine you, palpate the tissue, watch you move, or rule out the differential diagnoses that mimic piriformis pain (lumbar disc, SI joint, deep gluteal syndrome, hip joint pathology).
Piriformis-specific: if you have sciatic nerve symptoms (shooting pain, numbness, or pins-and-needles down the back of the leg), this is beyond piriformis stretching alone. See a physiotherapist. Most leg-radiating pain is from a lumbar disc, not the muscle, and the protocols are different. See the pain guide for the differential, then get an in-person assessment.
Email me when I'm wrong
Found a citation that no longer holds up, a guideline that has moved on, or a recommendation that contradicts current physiotherapy practice? Email oliver@digitalsignet.com. Twenty-four-hour correction window. Your name credited if you want it, anonymised if you don't.