Cluneal Neuralgia

Cluneal neuralgia is one of the most under-recognised sources of low back and buttock pain in clinical practice. The literature estimates it may account for a meaningful proportion of low back pain cases that don't respond to conventional treatment — and yet it is rarely specifically assessed or named. Our view is that a thorough evaluation of the low back must always include the cluneal nerves as a potential source.

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What Is Cluneal Neuralgia?

The word cluneal derives from the Latin for buttock (clunis), and the cluneal nerves are a group of cutaneous (skin and superficial tissue) nerves that supply sensation to the lower back, iliac crest region, and upper buttock. They are pure sensory nerves — they carry no motor function — but they are richly distributed across the posterolateral low back and gluteal region, which means that when they are irritated or entrapped, they can produce pain patterns that closely mimic musculoskeletal conditions.

There are three groups of cluneal nerves, each with distinct anatomy and distinct entrapment mechanisms:

The Superior Cluneal Nerves

The superior cluneal nerves (SCN) are branches of the posterior primary rami of the lumbar spinal nerves at L1, L2 and L3. They travel laterally across the posterior trunk, piercing the thoracolumbar fascia (TLF) and passing over the iliac crest through a fibro-osseous tunnel formed by the groove in the iliac crest and the overlying thoracolumbar fascia.

This is the most clinically significant entrapment point. The superior cluneal nerves are vulnerable at the iliac crest groove — a narrow anatomical passage where the nerve must change direction from a medial-to-lateral course to a caudal course into the upper buttock. Iwanaga et al. (2019) contributed detailed cadaveric mapping of both the nerve anatomy and the specific groove morphology at this site, demonstrating why the tunnel geometry makes these nerves susceptible to entrapment — particularly when the overlying TLF is restricted or densified.

Pain from superior cluneal nerve entrapment is typically felt as a unilateral ache, burning, or sharp pain in the lower back and iliac crest region, approximately 7–8 cm lateral to the spinous processes. It may radiate into the upper buttock and occasionally down the posterior thigh, producing what has been described in the literature as pseudo-sciatica — a sciatica-like pain pattern arising not from the lumbar nerve roots or disc, but from the cluneal nerve system (Konno et al., 2017).

The Middle Cluneal Nerves

The middle cluneal nerves are branches of the posterior primary rami of S1–S3. They emerge from the posterior sacral foramina and pass beneath the posterior sacroiliac ligament before entering the gluteal region.

Middle cluneal nerve entrapment produces pain in the sacral and posterior pelvic region that is clinically indistinguishable from sacroiliac joint pain on the basis of symptom location alone. This is a diagnostically important point: Matsumoto et al. (2019) reported a series of patients in whom middle cluneal nerve entrapment was the primary diagnosis after being initially assessed as sacroiliac joint dysfunction. The distinction matters because the management approaches differ significantly.

The Inferior Cluneal Nerves

The inferior cluneal nerves are branches of the posterior femoral cutaneous nerve. They loop around the lower border of the gluteus maximus to supply sensation to the lower buttock. Entrapment of the inferior cluneal branches can produce pain with sitting — a less common but diagnostically distinctive presentation.

Feature	Superior Cluneal Nerve	Middle Cluneal Nerve	Inferior Cluneal Nerve
Origin	L1–L3 dorsal rami	S1–S3 dorsal rami	Posterior femoral cutaneous nerve
Entrapment site	Iliac crest groove / TLF	Posterior sacroiliac ligament	Lower gluteus maximus border
Pain location	Iliac crest, lower back, upper buttock	Sacral / posterior pelvic region	Lower buttock, aggravated by sitting
Common misdiagnosis	Lumbar facet, disc, SIJ	SIJ dysfunction	Ischial bursitis, coccydynia

Maigne Syndrome — The Thoracolumbar Junction Connection

A related and also under-recognised condition is Maigne syndrome, which involves referred pain and hypersensitivity arising from the T12–L1 thoracolumbar junction — a region that gives rise to the superior cluneal nerves and also represents a significant fascial transition zone. Randhawa (2021) reviewed Maigne syndrome as a potentially treatable cause of low back pain that is frequently missed because the pain is distant from its source: patients present with posterior pelvic and iliac crest pain, but the origin is at the thoracolumbar junction, where minor mechanical dysfunction can sensitise the cluneal nerve roots before they emerge from the spine.

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Who Typically Experiences This?

In clinical practice, we commonly see cluneal neuralgia presenting in several distinct patterns:

The Person Whose "Low Back" Doesn't Respond as Expected

Perhaps the most consistent pattern we see is the person who has been treated for lumbar facet syndrome, SIJ dysfunction, or a disc issue — with appropriate care — but whose pain in the iliac crest and upper buttock region has not responded as expected. The joint has been addressed, the disc has been managed, but a component of the pain persists. This residual pain, particularly if it is located precisely along the posterior iliac crest or feels like a superficial burning rather than a deep aching, warrants specific assessment of the cluneal nerves.

The Desk Worker with Lower Crossed Syndrome

Prolonged sitting — particularly in a sustained anterior pelvic tilt — loads the thoracolumbar fascia asymmetrically and increases the compressive force through the iliac crest groove through which the superior cluneal nerves pass. Erdem et al. (2020) specifically described a case of superior cluneal nerve entrapment associated with lower crossed syndrome, where the combination of tight hip flexors, inhibited deep abdominals, and restricted TLF created the mechanical conditions for nerve entrapment at the iliac crest.

In our clinical experience, this is a pattern we assess for in desk workers who present with lower back pain that doesn't quite fit the classic facet or disc presentation — particularly when the tenderness is located laterally along the iliac crest rather than centrally over the spinous processes.

The Active or Athletic Person

Ermis et al. (2011) reported on medial superior cluneal nerve entrapment neuropathy in military personnel, where high-load physical activity combined with sustained pack-carrying postures created the conditions for nerve entrapment at the iliac crest. Similarly, runners, cyclists, and weightlifters who load the posterior trunk repeatedly — particularly in postures that increase TLF tension — may develop cluneal nerve irritation as a component of their low back pain picture.

The superior cluneal nerve at the iliac crest groove is particularly vulnerable during movements that require combined lumbar extension and rotation under load — such as picking up from the floor, rotational lifting, and asymmetric barbell movements.

The Younger Person with Unexplained Low Back Pain

Jones et al. (2025) described superior cluneal nerve entrapment syndrome in adolescents — a population in whom this diagnosis is not typically considered and in whom the presentation can be mistaken for mechanical low back pain, growing pains, or early disc issues. The literature suggests this condition may be more prevalent in younger populations than is currently recognised.

Post-Surgical Presentations

Following lumbar spinal fusion surgery, the altered mechanical environment of the thoracolumbar fascia — combined with potential surgical disruption of fascial structures — can change the loading conditions at the iliac crest groove and increase the risk of superior cluneal nerve entrapment in the post-operative period. This is a pattern worth specifically assessing in patients who report persistent lateral low back or iliac crest pain following spine surgery.

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The Fascial Lens: Why We See This Differently

The cluneal nerve system sits at the intersection of two areas of clinical interest for us: the neurological and the fascial. Our approach is informed by Stecco et al.'s (2019) work on fascial entrapment neuropathy — the concept that peripheral nerve entrapment is frequently not a bony or structural problem, but a consequence of fascial densification at anatomical tunnels through which nerves must pass.

This reframing has significant implications for how we assess and manage cluneal neuralgia.

The TLF as the Entrapment Mechanism

The superior cluneal nerve must pierce the thoracolumbar fascia as it travels over the iliac crest. The specific passage — the fibro-osseous tunnel formed by the iliac crest groove and the overlying TLF — is the primary entrapment point in the majority of superior cluneal neuralgia cases.

When the TLF is functioning normally — well-hydrated, with good gliding capacity between its layers — this tunnel is compliant enough to accommodate the nerve under a range of movement demands. When the TLF is densified — when hyaluronic acid polymerisation has reduced the gliding capacity of the fascial layers, as described by Pavan et al. (2014) — the tunnel becomes less accommodating. The nerve is now more susceptible to compression and friction during normal movement, and the result is an irritated, sensitised nerve producing the characteristic cluneal pain pattern.

This is the Stecco fascial entrapment neuropathy model applied specifically to the cluneal nerve: the nerve is not being compressed by bone or a herniated disc — it is being irritated by a densified fascial tunnel that no longer provides adequate protection.

The Lower Crossed Syndrome — TLF Connection

The lower crossed syndrome — characterised by tight hip flexors and lumbar extensors coupled with inhibited deep abdominals and gluteals — is a postural pattern that directly loads the TLF asymmetrically. The combination of increased lumbar lordosis, anterior pelvic tilt, and reduced gluteal activation means the TLF is under altered tension across the posterior trunk and iliac crest region.

This altered fascial tension has two potential consequences for the cluneal nerve system:

1. Increased tension at the iliac crest groove — the TLF component of the fibro-osseous tunnel is placed under greater strain in the lower crossed syndrome posture, reducing the space available for the superior cluneal nerves
2. Reduced dynamic fascial gliding — when the TLF is chronically loaded in a fixed posture, the hyaluronan-rich loose connective tissue between the fascial layers stiffens, reducing the gliding that normally accommodates nerve movement under load

Addressing the lower crossed syndrome — the postural and movement pattern that is loading the fascial tunnel — is therefore an integral part of managing superior cluneal neuralgia, not merely an adjunct to it.

The Thoracolumbar Junction — A Fascial Transition Zone

The T12–L1 junction is where the thoracic and lumbar spines meet — and it is also where the fascial architecture changes. The thoracolumbar fascia, in its posterior layer, is thickest and most mechanically complex in the lumbar region. At the thoracolumbar junction, this fascial density transitions, and the region represents a mechanical inflection point in the posterior trunk.

The superior cluneal nerve roots arise from L1–L3 — immediately caudal to this transition zone. Any mechanical restriction or fascial densification at the thoracolumbar junction can sensitise the nerve origins before they even reach the iliac crest entrapment site, contributing to the Maigne syndrome presentation described above.

We specifically assess this region — the thoracolumbar junction and the upper lumbar fascial structures — as part of our evaluation of cluneal neuralgia, because addressing densification at the nerve's origin may be as important as addressing the entrapment at its destination.

The Fascial Picture — Cluneal Neuralgia

The cluneal nerve is entrapped not by bone, but by the tissue it must pass through. When the thoracolumbar fascia — the roof of the iliac crest tunnel — is densified and poorly gliding, it narrows the passage available to the nerve. The lower crossed syndrome increases the tension. The thoracolumbar junction may sensitise the roots. And the result is a pain pattern that looks like a joint problem but originates in the fascial nerve tunnel.

Our assessment is directed at identifying where in this chain the problem is occurring — and our treatment is directed at restoring the fascial environment through which the nerve runs.

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What Does the Research Say?

Prevalence and the Diagnostic Gap

Anderson et al. (2022) contributed a comprehensive review of cluneal neuralgia as a cause of low back pain, concluding that the condition is likely significantly under-diagnosed in clinical practice — in part because most low back pain assessments focus on the intervertebral disc and facet joints, and do not specifically assess the cluneal nerve distribution or the iliac crest groove.

Kuniya et al. (2014) conducted a prospective study of patients presenting with low back pain and leg symptoms, finding superior cluneal nerve disorder in a meaningful subset — particularly in those whose leg symptoms did not follow a classic dermatomal pattern consistent with lumbar disc herniation. This study highlighted the importance of specifically testing for cluneal nerve involvement in any low back pain presentation that includes atypical leg or buttock referral.

Mizumoto et al. (2022) described superior cluneal nerve entrapment syndrome as "a common but often overlooked cause of low back pain," noting that it is both treatable and frequently confused with other diagnoses — with the point that a diagnosis that is not considered cannot be made.

The Misdiagnosis Problem

Matsumoto et al. (2019) specifically examined middle cluneal nerve entrapment as a condition that mimics sacroiliac joint pain, presenting a series of patients whose pain location, quality and provocation pattern was clinically consistent with SIJ dysfunction, but who were ultimately identified as having middle cluneal nerve entrapment through specific nerve assessment and diagnostic nerve block.

Konno et al. (2017) investigated the anatomical basis of pseudo-sciatica from superior cluneal nerve entrapment, demonstrating through cadaveric and clinical work that the referral pattern of the superior cluneal nerve can extend to the posterior thigh — mimicking L4/5 or L5/S1 radiculopathy — and that this pattern has a specific anatomical basis in the nerve's distribution, not a central sensitisation phenomenon.

Ruan et al. (2023) described a case series in which superior cluneal nerve entrapment syndrome had been misidentified as spondylolysis — demonstrating the breadth of conditions that cluneal neuralgia can masquerade as.

The Fascial Entrapment Mechanism

Stecco et al. (2019) described fascial entrapment neuropathy as a distinct mechanism by which peripheral nerves become symptomatic — not through classic structural compression, but through densification of the fascial tunnels through which they pass. The hyaluronan-rich loose connective tissue that normally allows fascial layers to glide becomes viscous and poorly mobile, converting a compliant tunnel into a restrictive one. This paper provides the mechanistic basis for approaching cluneal neuralgia through the fascial system rather than purely through the nerve itself.

Iwanaga et al. (2019) contributed the detailed anatomical mapping of the superior cluneal nerve's course over the iliac crest and the specific groove morphology that creates the entrapment tunnel — confirming the precise anatomical site that fascial assessment and treatment needs to address.

Key References

1. Anderson TA (2022). A comprehensive review of cluneal neuralgia as a cause of lower back pain. Orthopedic Reviews, 14(4).
2. Stecco A et al. (2019). Fascial entrapment neuropathy. Clinical Anatomy, 32(7), 883–890.
3. Iwanaga J et al. (2019). Anatomic study of the superior cluneal nerve and its related groove on the iliac crest. World Neurosurgery, 126, e1081–e1085.
4. Konno T et al. (2017). Anatomical etiology of 'pseudo-sciatica' from superior cluneal nerve entrapment: a laboratory investigation. Journal of Pain Research, 10, 2539–2545.
5. Kuniya H et al. (2014). Prospective study of superior cluneal nerve disorder as a potential cause of low back pain and leg symptoms. Journal of Orthopaedic Surgery and Research, 9, 139.
6. Matsumoto J et al. (2019). Middle cluneal nerve entrapment mimics sacroiliac joint pain. Acta Neurochirurgica, 161(12), 2441–2445.
7. Randhawa K et al. (2021). Maigne Syndrome — a potentially treatable yet underdiagnosed cause of low back pain. Journal of Back and Musculoskeletal Rehabilitation, 34(3), 335–343.
8. Erdem HR et al. (2020). Superior cluneal nerve entrapment neuropathy due to lower crossed syndrome. Ağrı, 32(4), 204–208.
9. Mizumoto J et al. (2022). Superior cluneal nerve entrapment syndrome: a common but often overlooked cause of low back pain. Journal of General and Family Medicine, 23(3), 196–199.

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How We Approach Cluneal Neuralgia

Cluneal neuralgia requires a specific and systematic assessment to distinguish it from the other conditions it commonly resembles — particularly lumbar facet syndrome, SIJ dysfunction, and lumbar disc problems. Because several of these conditions frequently co-exist, our assessment is designed to identify the relative contribution of each.

Assessment

• Cluneal nerve palpation — systematic palpation of the posterior iliac crest region, approximately 7–8 cm lateral to the spinous processes, to identify the characteristic point tenderness at the iliac crest groove that is pathognomonic for superior cluneal nerve entrapment. Middle cluneal assessment includes palpation of the posterior sacroiliac ligament region
• Neurological screening — assessing for superficial sensory changes in the cluneal nerve distribution (the lower back, iliac crest, and upper buttock), including altered sensation, hyperalgesia, or allodynia
• TLF and thoracolumbar junction assessment — systematic fascial palpation of the posterior trunk using Stecco FM protocols, specifically assessing for densification at the thoracolumbar junction and the iliac crest region
• Lower crossed syndrome assessment — evaluation of hip flexor length, gluteal activation, deep abdominal function, and lumbar movement quality to identify the postural pattern that may be loading the fascial entrapment site
• Lumbar and SIJ assessment — ruling in or out co-existing facet, disc, or SIJ contributions to the pain picture, which are frequently present alongside cluneal neuralgia
• Referral pattern mapping — carefully documenting the location and quality of pain and any referral to clarify whether the distribution is consistent with the cluneal nerve, lumbar nerve roots, or SIJ referral

Treatment

Treatment is directed at both the nerve's entrapment site and the mechanical and fascial environment that is contributing to entrapment:

• Fascial Manipulation by Stecco (FM) — targeted manual therapy at the identified centres of coordination in the thoracolumbar fascia, specifically at the iliac crest region and the thoracolumbar junction. The aim is to restore fascial gliding at the entrapment tunnel, reducing the mechanical restriction on the nerve. This is the primary manual therapy approach and is directed at the Stecco fascial entrapment neuropathy mechanism
• Thoracolumbar junction mobilisation — where restriction is identified at T12–L1, gentle mobilisation is directed at restoring movement and reducing the sensitising influence on the superior cluneal nerve origins
• Lower crossed syndrome rehabilitation — graduated restoration of hip flexor extensibility, gluteal activation, and deep abdominal function, directed at reducing the chronic TLF loading pattern that may be narrowing the iliac crest tunnel
• Load and movement management — guidance on positions and activities that may be aggravating the nerve, and progressive reintroduction of full movement as the fascial environment improves

Please note: The information on this page describes our general clinical approach and is intended for educational purposes only. Individual presentations vary, and your assessment and management will be tailored specifically to you. Nothing on this page constitutes clinical advice for your individual situation. Please consult a registered health practitioner for advice about your specific condition.

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What Can You Do Right Now?

The following are evidence-informed starting points for someone who suspects cluneal neuralgia may be contributing to their low back or buttock pain. They are not a substitute for assessment, but they represent sensible first steps.

1. Identify the Tender Spot — and What Aggravates It

The hallmark of superior cluneal nerve entrapment is a specific point of tenderness along the posterior iliac crest — the bony ridge you can feel at the back of the hip. If pressing firmly along this ridge, approximately 7–8 cm from the midline, reproduces your familiar pain — especially if it sends a sensation into the buttock — this is worth noting and bringing to an assessment. It is a clinically specific finding that helps distinguish cluneal nerve involvement from lumbar facet or SIJ sources.

2. Reduce Sustained TLF Loading

Because the superior cluneal nerve passes through a fascial tunnel at the iliac crest, sustained postures that increase TLF tension may aggravate the nerve. The most common aggravating posture pattern is prolonged anterior pelvic tilt combined with lumbar extension — the posture of standing with a hyperlordotic lumbar spine, which is common in people with tight hip flexors.

A sustained hip flexor stretch in a lunge position — held for 90 seconds on each side — with specific attention to the sensation of fascial release through the anterior hip and lower abdominal region, may help reduce the chronically elevated TLF tension that is loading the entrapment tunnel. The key is slow and sustained — not ballistic.

3. Gentle Thoracolumbar Junction Mobility

The area where the thoracic and lumbar spines meet — approximately at the level of the lowest ribs — is often restricted in people with lower crossed syndrome and sustained desk postures. Gentle rotation through this region in a seated or lying position — slow, controlled, end-range thoracic rotation — may help restore movement at the segment that gives rise to the superior cluneal nerves. This is not a specific treatment for the nerve, but improving movement at the origin level is a reasonable self-help starting point.

4. Avoid Sustained Asymmetric Postures

As with SIJ syndrome, habitually asymmetric postures — sitting crossed-legged always to the same side, carrying weight on one shoulder, or standing habitually with weight on one leg — create asymmetric tension through the TLF and may favour entrapment on one side more than the other. Becoming aware of these habits and introducing more symmetry into your daily posture is a low-cost, meaningful first step.

Want to know where to start?

Download our free 2-week Low Back Intro Rehab Program — a practitioner-designed starting point covering the foundational movement and mobility work we commonly recommend in the early stages of managing low back pain of any source. Enter your email to receive it as a PDF.

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Take the Next Step

Cluneal neuralgia is a condition that responds well to thorough assessment and specifically directed care — but it requires a clinician who is looking for it. If you have been told your pain is coming from your disc, your facet joints, or your SI joint, but the diagnosis hasn't fully explained your experience or the treatment hasn't addressed the iliac crest component, a specific assessment of the cluneal nerve system may be a valuable next step.

Ready to get on top of this?

📞 Call Now — speak with our team

🗓 Book Online — available 24/7

📄 Free 2-Week Rehab Program — request your copy

Located in Melbourne, Victoria. Telehealth assessments are available for patients unable to attend in person.

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