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1 · SNAPSHOT

Deep Gluteal Syndrome (Piriformis-Related Sciatic Pain) body chart — Illustrative, not diagnostic. Canva body chart for Deep Gluteal Syndrome (Piriformis-Related Sciatic Pain).

Who: Anyone with prolonged sitting or driving, a fall onto the buttock, an overload history, or post-surgical scarring.
What: Non-discogenic sciatic nerve entrapment in the deep gluteal space.
How it behaves: Deep buttock pain ± referral down the posterior thigh. Worse with prolonged sitting, driving, and hip flexion/adduction/internal rotation. Described as "sciatica" — often without a clear lumbar history.

The one thing to take from this page:

Name the space, not the muscle. The deep gluteal space holds the piriformis, the hamstring origin, fibrous bands and vessels — all around the nerve. "Piriformis syndrome" names one suspect out of several, and the current literature says so.

It stays a diagnosis of exclusion

Clear this first	Because
Lumbar spine	This presentation IS the presentation of lumbar radicular pain
SIJ	Buttock pain with a provocation cluster
Hip joint	Groin-dominant, FADIR, restricted IR in flexion
Proximal hamstring tendon	Focal tenderness on the ischial tuberosity
Then	You are allowed to name the deep gluteal space

⚠️ No guideline exists. A systematic review of this condition's literature is a systematic review of case reports. Everything below is a reasoned position, not a recommendation.

2 · SE — THE SUBJECTIVE PATTERN (the 70%)

Five stages, in your course's order. The subjective's whole job here is to decide whether this is the spine.

MAIN PROBLEM

"Deep in my backside, and it goes down my leg."
"Driving is unbearable."
"They said sciatica but my back's fine."

BODY CHART

Deep in the gluteal region, over the sciatic pathway.
Mark the referral — how far down, and does it pass the knee?
Mark the ischial tuberosity separately. Focal tenderness there is the hamstring tendon.
Is it dermatomal? That is the lumbar question, and it belongs on the chart.

BEHAVIOUR

	Fits deep gluteal syndrome	Points elsewhere
Aggs	Prolonged sitting, driving, hip flexion/adduction/IR	Flexion, coughing, sneezing → lumbar
Referral	Posterior thigh, often non-dermatomal	Dermatomal, below the knee, with deficit → radicular
Eases	Standing up, walking, changing position	Unloading and extension → lumbar
Severity	VAS 0–10 at best / at worst / right now	—
History	Fall onto the buttock, overload, post-surgical	Lifting incident, back pain first → lumbar
Neuro	Usually normal exam	Deficit → spine or nerve

HISTORY

Sitting tolerance in minutes. Get it now — it is your outcome measure.
Driving hours, desk hours, seat type.
A fall onto the buttock? Previous hip or pelvic surgery?
Any back pain history at all? Its absence is part of the pattern; its presence changes the order.
What have they read? They have usually read something. Read further: quality and readability of online information about this condition [1].

SPECIAL / SCREENING QUESTIONS

Any bowel or bladder change? Saddle numbness?
Progressive weakness, foot drop, or numbness that is spreading?
Night pain, rest pain, weight loss, cancer history?
Bilateral symptoms?

Assessing this region? Download the Hip & Groin assessment template →

3 · HYPOTHESIS RANKING

Competing pattern	The one discriminating feature
Lumbar radicular pain	Dermatomal distribution, neurological deficit, lumbar behaviour. Clear this first — always.
Proximal hamstring tendinopathy	Focal tenderness on the ischial tuberosity; load-related rather than position-and-compression related.
SIJ-related pain	Positive provocation cluster, no distal neural behaviour.
Hip joint pathology	Groin-dominant, FADIR positive, restricted IR in flexion.
Ischiofemoral impingement	Described alongside deep gluteal syndrome as a cause of posterior hip pain [2].

The two that outrank the table

Cauda equina syndrome. Bowel or bladder change, saddle numbness, bilateral symptoms. This presentation shares an address with the nerve roots. Ask every time.

Progressive neurological deficit from any cause. Spreading numbness, foot drop, worsening weakness. That is a referral, not a rehabilitation problem.

And the framing that keeps you honest

It stays a diagnosis of exclusion. You earn the label by clearing the lumbar spine, the SIJ, the hip and the hamstring tendon first — not by getting a positive FAIR test.

4 · RED FLAGS — DON'T MISS THIS

This section is free, on every pattern, forever. Safety is never gated.

Finding	What it suggests	What you do
Bowel or bladder change, saddle numbness	Cauda equina syndrome	EMERGENCY
Sudden buttock pain with leg weakness, numbness or urinary retention after pelvic trauma — especially on anticoagulants	A haematoma compressing the sacral plexus can mimic cauda equina (Lodin et al. 2021) [21]	EMERGENCY — if the lumbar MRI is clear, the pelvis needs imaging; decompression is time-critical
Bilateral leg symptoms	Central cause	Urgent medical review
Progressive weakness or foot drop	Nerve or spinal compromise	Urgent medical review
Spreading or worsening numbness	Progressive neuropathy	Urgent medical review
Night pain or rest pain, unrelieved	Malignancy, infection	Medical review
Cancer history with new buttock pain	Metastatic disease	Medical review
Sciatica that persists with clear lumbar imaging	A tumour along the sciatic nerve in the pelvis — seven of 143 such patients in one series had one (Shah et al. 2019) [22]	Medical review — ask whether the pelvis has been imaged
Fever, unwell, systemic symptoms	Infection	Medical review, same day
Unexplained weight loss	Systemic disease	Medical review

The rule: position- and compression-related deep buttock pain with a normal neurological exam and a cleared lumbar spine is yours. Any deficit, any progression, anything bilateral, and anything to do with bowel or bladder is not.

Cross-links: Proximal hamstring tendinopathy · Lumbar radicular pain · SIJ dysfunction · Gluteal tendinopathy

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Twelve slides on this pattern: what you'll hear, what to examine, what to do. Free with an account.

Guideline anchor

No guideline of any nationality exists.

Anchored to the review that defines deep gluteal syndrome as non-discogenic sciatic nerve entrapment in the deep gluteal space (Martin et al. 2015, PMID 27011826), to the systematic review of conservative and surgical treatments (Hopayian et al. 2023, PMID 37949567), and to the current work arguing that the space contains more than the piriformis (Sharma et al. 2023, PMID 36937215; Yoon et al. 2025, PMID 41095750).

PubMed Source

There is no guideline and no Australian document. A systematic review of the condition's literature is a systematic review of case reports, which tells you the evidence level. Treat every management statement as a reasoned position, not a recommendation.

Members

The evidence summary is for members

Verified diagnostic accuracy, where the evidence stands and what it doesn't settle. Free with an account.

Sources · 20

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Every source on this page resolves and title-verifies against PubMed. Newest first.

2024Dede et al. (2024). Quality and readability of online information about piriformis syndrome. Journal of bodywork and movement therapies, 40, 2205-2210. https://doi.org/10.1016/j.jbmt.2024.11.009
2016Martin et al. (2016). Ischiofemoral Impingement and Hamstring Syndrome as Causes of Posterior Hip Pain: Where Do We Go Next?. Clinics in sports medicine, 35(3), 469-486. https://doi.org/10.1016/j.csm.2016.02.010
2025Kurková et al. (2025). Exploring non-invasive diagnostic tools for deep gluteal syndrome: a multimodal approach integrating clinical and imaging techniques. Quantitative imaging in medicine and surgery, 15(9), 8409-8422. https://doi.org/10.21037/qims-2025-241
2025Lim et al. (2025). Diagnosis of piriformis syndrome based on the piriformis muscle cross-sectional area on hip MRI. Medicine, 104(8), e41689. https://doi.org/10.1097/MD.0000000000041689
2024Lin et al. (2024). Posterior Hip Pain: Ultrasound Imaging/Guidance for Piriformis Syndrome. Journal of medical ultrasound, 32(4), 363-364. https://doi.org/10.4103/jmu.jmu_82_22
2023Hopayian et al. (2023). A systematic review of conservative and surgical treatments for deep gluteal syndrome. Journal of bodywork and movement therapies, 36, 244-250. https://doi.org/10.1016/j.jbmt.2022.12.003
2025Monteleone et al. (2025). Piriformis syndrome: a systematic review of case reports. BMC surgery, 25(1), 468. https://doi.org/10.1186/s12893-025-03202-2
2011Martin et al. (2011). The endoscopic treatment of sciatic nerve entrapment/deep gluteal syndrome. Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association, 27(2), 172-81. https://doi.org/10.1016/j.arthro.2010.07.008
2023Sun et al. (2023). Arthroscopic treatment of deep gluteal syndrome and the application value of high-frequency ultrasound. BMC musculoskeletal disorders, 24(1), 742. https://doi.org/10.1186/s12891-023-06863-3
2025Elzeiny et al. (2025). Endoscopy for sciatic nerve entrapment in deep gluteal syndrome. A systematic review of literature. European journal of orthopaedic surgery & traumatology : orthopedie traumatologie, 35(1), 223. https://doi.org/10.1007/s00590-025-04349-7
2025Garden et al. (2025). Evaluation of the Complications and Outcomes of Endoscopic and Open Surgical Treatment of Piriformis Syndrome: A Systematic Review. The Journal of the American Academy of Orthopaedic Surgeons, 33(15), e878-e887. https://doi.org/10.5435/JAAOS-D-24-01223
2026Warman et al. (2026). Endoscopic vs Open Surgeries for Piriformis Syndrome: A Systematic Review and Meta-Analysis. Advances in orthopedics, 2026, 5126019. https://doi.org/10.1155/aort/5126019
2015Martin et al. (2015). Deep gluteal syndrome. Journal of hip preservation surgery, 2(2), 99-107. https://doi.org/10.1093/jhps/hnv029
2023Sharma et al. (2023). Looking beyond Piriformis Syndrome: Is It Really the Piriformis?. Hip & pelvis, 35(1), 1-5. https://doi.org/10.5371/hp.2023.35.1.1
2024Geler Külcü (2024). Deep Gluteal syndrome: An underestimated cause of posterior hip pain. Turkish journal of physical medicine and rehabilitation, 70(1), 4-16. https://doi.org/10.5606/tftrd.2024.14668
2024Lo & Robinson (2024). Piriformis syndrome. Handbook of clinical neurology, 201, 203-226. https://doi.org/10.1016/B978-0-323-90108-6.00002-8
2025Batool et al. (2025). Prevalence of piriformis syndrome and its associated risk factors among university students in Pakistan: a cross-sectional study. BMJ open, 15(1), e092383. https://doi.org/10.1136/bmjopen-2024-092383
2025Yoon et al. (2025). Beyond Nerve Entrapment: A Narrative Review of Muscle-Tendon Pathologies in Deep Gluteal Syndrome. Diagnostics (Basel, Switzerland), 15(19). https://doi.org/10.3390/diagnostics15192531
2026Lopez Castellanos & Feipel (2026). Exploring the anatomical basis of piriformis syndrome: A systematic review. Morphologie : bulletin de l'Association des anatomistes, 110(369), 101114. https://doi.org/10.1016/j.morpho.2026.101114
2026Neal et al. (2026). Prevalence and Clinical Patterns of Piriformis Syndrome Among Actively Competing and Retired Elite Hockey Players. Sports (Basel, Switzerland), 14(3). https://doi.org/10.3390/sports14030095

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