Origin, Insertion, Action, Innervation
- Origin: Posterior gluteal line of the ilium and the bone above it, posterior surface of the lower sacrum and coccyx, sacrotuberous ligament, and the thoracolumbar fascia (aponeurosis of erector spinae)
- Insertion:
- Superior fibers (approximately 75%): iliotibial band (IT band) of the fascia lata
- Inferior fibers (approximately 25%): gluteal tuberosity of the femur
- Action:
- Primary: Extension of the hip (most powerful hip extensor — dominant in stair climbing, rising from a squat, and sprinting)
- External (lateral) rotation of the hip
- Upper fibers: abduction of the hip (via the IT band)
- Lower fibers: adduction of the hip
- Posterior stabilization of the pelvis on the femur during stance phase of gait
- Innervation: Inferior gluteal nerve (L5, S1, S2)
Palpation Guide
- Client position: Prone. A pillow under the ankles allows the knees to flex slightly and keeps the client comfortable.
- Landmark sequence:
- Locate the iliac crest — follow it posteriorly to the PSIS. The superior border of gluteus maximus lies along the posterior iliac crest and sacrum.
- Locate the gluteal fold — the horizontal crease where the buttock meets the posterior thigh. This marks the inferior border of the muscle.
- Locate the greater trochanter laterally — the insertion zone (via the IT band) is lateral and inferior.
- Place your palm flat on the buttock between these landmarks. The entire muscle belly is directly under your hand. Gluteus maximus is broad, thick, and superficial — there is no overlying muscle to press through.
- To feel the fiber direction, note that fibers run obliquely from the sacrum and iliac crest inferolaterally toward the IT band and gluteal tuberosity.
- Tissue feel: Broad, thick, and fleshy when relaxed. The muscle has a coarse, meaty texture with palpable fiber bundles. In a well-developed individual, it is one of the thickest muscles in the body. In a deconditioned or inhibited gluteus maximus, it may feel surprisingly soft and atonic.
- Confirmation test: With the client prone, ask them to extend the hip (lift the thigh off the table) against your resistance at the posterior thigh. The entire gluteal mass should contract firmly under your hand. If you feel mainly hamstring contraction at the posterior thigh with little gluteal activation, the client may have gluteal inhibition — a common clinical finding.
- Common errors:
- Assuming tension equals strength — a tight gluteus maximus is not necessarily a strong one. In lower crossed syndrome, the gluteals are often inhibited and weak despite feeling firm at rest.
- Not distinguishing from gluteus medius — gluteus medius lies deep to gluteus maximus superolaterally. If you are palpating superior and lateral to the iliac crest and feel a muscle contracting during hip abduction rather than extension, you are on gluteus medius.
Trigger Point Referral
- Common TrP locations: Three common TrP sites: (1) near the sacrum along the medial fibers, (2) in the mid-belly inferior to the iliac crest, and (3) near the coccyx at the inferior medial attachment.
- Referral pattern: Local pain in the buttock, concentrated around the sacrum, coccyx, and gluteal fold. The coccygeal TrP produces deep aching at the coccyx that worsens with sitting — a major source of coccydynia.
- Clinical significance: The coccygeal TrP is the most frequently overlooked cause of tailbone pain. If a client reports pain with sitting concentrated at the coccyx and no history of direct trauma (fall on the tailbone), check gluteus maximus TrPs before assuming coccygeal pathology.
Trigger point referral diagram — coming soon
Image coming soon. For visual reference, see [Gluteus Maximus at TriggerPoints.net](http://www.triggerpoints.net/muscle/gluteus-maximus).Clinical Notes
Common conditions:- Central to conditions/lower-crossed-syndrome — in Janda's lower crossed pattern, gluteals are inhibited and weak while hip flexors and erector spinae are tight. Gluteus maximus inhibition forces the hamstrings and erector spinae to compensate for hip extension, leading to overuse of both.
- Contributes to conditions/sacroiliac-joint-dysfunction — gluteus maximus provides posterior stabilization of the SI joint through its attachment to the sacrotuberous ligament. Weakness or inhibition reduces SI joint stability, allowing excessive nutation or counternutation.
- Relevant to conditions/iliotibial-band-syndrome — the upper fibers insert into the IT band. Hypertonic or shortened upper fibers increase IT band tension, contributing to lateral knee pain at Gerdy's tubercle.
- Can contribute to conditions/coccydynia — the inferior medial fibers attach near the coccyx. TrPs in this region produce coccygeal pain that mimics coccyx fracture or ligamentous injury.
- In clients who sit for prolonged periods, gluteus maximus is often inhibited rather than hypertonic — the muscle is compressed and neurologically downregulated. The client may present with poor gluteal tone, difficulty activating the glutes during hip extension, and compensatory hamstring or erector spinae overactivity.
- When the muscle is genuinely hypertonic, it usually presents in athletes or clients with excessive hip extension demand. The tissue feels dense and resistant to compression, with tender spots concentrated along the sacral attachment.
- Bilateral involvement is typical but often asymmetric, correlating with leg dominance or habitual postures.
- Responds well to broad, deep effleurage and myofascial techniques because of its size and superficial position. It tolerates deep pressure well — most clients prefer firm work here.
- The coccygeal TrPs require careful, sustained compression near the coccyx. Communicate clearly with the client about the location of your work and obtain explicit consent before treating this area, as it is near sensitive anatomy.
- Post-treatment activation is essential — if you release gluteus maximus without reactivating it, the inhibition pattern returns. Bridge exercises or prone hip extension against resistance after treatment helps "wake up" the muscle.
- The inferior gluteal neurovascular bundle exits the pelvis inferior to piriformis through the greater sciatic foramen and enters the deep surface of gluteus maximus. Avoid sustained deep compression directly over the greater sciatic notch.
- The sciatic nerve runs deep to gluteus maximus (between it and the deep six rotators). During deep work through the gluteal mass, you are pressing toward the sciatic nerve. If the client reports radiating symptoms down the posterior leg during treatment, lighten your pressure — you may be compressing the sciatic nerve against the deep rotators.
- Gluteus maximus is the primary counter to anterior pelvic tilt. When it is weak or inhibited, the pelvis tilts anteriorly under the pull of the hip flexors and erector spinae, increasing lumbar lordosis. Strengthening gluteus maximus is a cornerstone of lower crossed syndrome correction.
- During gait, gluteus maximus controls hip flexion eccentrically during swing phase and produces hip extension during push-off. Inhibited gluteals produce a characteristic "gluteal lurch" — the trunk shifts posteriorly over the stance leg to compensate for weak hip extension.
- If gluteus maximus consistently tests weak on MMT but the tissue does not feel atonic, check the ipsilateral hip flexors — specifically anatomy/muscles/iliopsoas. Reciprocal inhibition from a hypertonic iliopsoas is the most common cause of gluteal inhibition. Release the hip flexors first, then retest the glutes — you will often see immediate improvement in gluteal activation without any direct gluteal treatment.
Assessment
Resisted hip extension (MMT):- Client prone with the knee extended. Stabilize the pelvis with one hand. Ask the client to lift the thigh off the table. Resist at the posterior distal thigh. Compare bilaterally. Weakness or inability to activate suggests gluteal inhibition.
- Client supine at the edge of the table. Pull both knees to the chest, then lower the test leg. If the thigh does not reach the table surface (remains above horizontal) and the knee remains flexed, hip extension is restricted — gluteus maximus and capsular tightness are likely contributors.
- Client prone. Ask them to extend the hip. Palpate the firing sequence: gluteus maximus should fire first, then hamstrings, then contralateral erector spinae. If hamstrings or erector spinae fire before gluteals, the client has an altered recruitment pattern consistent with gluteal inhibition.
Muscle Groups
Gluteals (anatomical):- Gluteus maximus (this article)
- anatomy/muscles/gluteus-medius
- anatomy/muscles/gluteus-minimus
- Gluteus maximus (this article)
- anatomy/muscles/biceps-femoris
- anatomy/muscles/semitendinosus
- anatomy/muscles/semimembranosus
- Gluteus maximus (this article)
- anatomy/muscles/piriformis
- anatomy/muscles/obturator-internus
- anatomy/muscles/obturator-externus
- anatomy/muscles/gemellus-superior
- anatomy/muscles/gemellus-inferior
- anatomy/muscles/quadratus-femoris
- Gluteus maximus (this article)
- anatomy/muscles/gluteus-medius
- Abdominals
Related Muscles
Synergists for hip extension:- anatomy/muscles/biceps-femoris — long head assists hip extension; compensates when gluteus maximus is inhibited
- anatomy/muscles/semitendinosus and anatomy/muscles/semimembranosus — assist hip extension; often overworked when glutes are inhibited
- anatomy/muscles/piriformis — deep external rotator; lies directly deep to gluteus maximus
- anatomy/muscles/obturator-internus — deep external rotator
- anatomy/muscles/iliopsoas — primary hip flexor; reciprocal inhibition from hypertonic iliopsoas is the most common cause of gluteal inhibition
- anatomy/muscles/rectus-femoris — two-joint hip flexor and knee extensor
Key Takeaways
- Gluteal inhibition is more common than gluteal tightness — in prolonged sitters, the muscle is neurologically downregulated, not just compressed.
- If glutes test weak, release the hip flexors first (especially iliopsoas) — reciprocal inhibition is the most common cause.
- The coccygeal TrP mimics tailbone pathology and is the most overlooked cause of coccydynia in clients with no trauma history.
- Post-treatment activation (bridges, prone hip extension) is essential — release without reactivation does not hold.
Sources
- Travell, J. G., & Simons, D. G. (1992). Myofascial pain and dysfunction: The trigger point manual (Vol. 2). Williams & Wilkins.
- Biel, A. (2014). Trail guide to the body (5th ed.). Books of Discovery.
- Vizniak, N. A. (2010). Muscle manual. Professional Health Systems.
- Moore, K. L., Dalley, A. F., & Agur, A. M. R. (2023). Clinically oriented anatomy (9th ed.). Wolters Kluwer.
- Clay, J. H., & Pounds, D. M. (2003). Basic clinical massage therapy: Integrating anatomy and treatment. Lippincott Williams & Wilkins.
- Magee, D. J., & Manske, R. C. (2021). Orthopedic physical assessment (7th ed.). Elsevier.
- Rattray, F., & Ludwig, L. (2000). Clinical massage therapy: Understanding, assessing and treating over 70 conditions. Talus Incorporated.
- Hoppenfeld, S. (1976). Physical examination of the spine and extremities. Appleton-Century-Crofts.