Meralgia Paraesthetica

Lower Limb

Overview

Meralgia paraesthetica is a mononeuropathy affecting the lateral femoral cutaneous nerve (LFCN) as it passes under or through the inguinal ligament, causing numbness, tingling, and burning sensation over the lateral thigh. The condition is typically self-limiting but can cause significant discomfort and functional limitation. It is often associated with prolonged compression from tight clothing, obesity, pregnancy, or local structural changes.

Pathophysiology

The lateral femoral cutaneous nerve arises from the L2-L3 nerve roots and supplies sensory innervation to the lateral aspect of the thigh. As it passes beneath the inguinal ligament at the groin, it becomes vulnerable to compression. This can occur due to mechanical irritation from tight waistbands, obesity causing increased abdominal pressure, pregnancy-related weight gain, prolonged standing or walking, or structural abnormalities such as inguinal hernia or psoas muscle hypertrophy. The compression leads to demyelination and axonal degeneration of the nerve, resulting in paresthesia, dysesthesia, and numbness in its sensory distribution.

Typical Presentation

Site

Lateral thigh, typically starting at the groin and extending to the lateral knee; unilateral in most cases

Quality

Burning sensation, tingling, numbness, electric shock-like sensations, formication (crawling sensation)

Intensity

Mild to moderate; often described as bothersome rather than severe; can fluctuate throughout the day

Aggravating

Prolonged standing or walking, tight clothing (belts, tight jeans, girdles), direct pressure over the groin, weight gain, prolonged sitting with hip flexion, heavy lifting

Relieving

Lying down, removing tight clothing, changing position frequently, weight reduction, gentle stretching of hip flexors

Associated

No motor weakness (purely sensory); normal reflexes; possible anterior hip/groin discomfort; symptoms often worse at end of day; sleep may be disturbed if severe

Orthopaedic Tests

Test descriptions are written with AI assistance from standard clinical texts. Where a test lists Sources, its description has been checked against them; those sources are independent and do not endorse OsteoKit. Accuracy figures and grades (A–D) appear only when checked against the published study; tests without one are marked “No accuracy study”.

Further reading: full test procedures are described in standard clinical examination texts, e.g. Magee & Manske, Orthopedic Physical Assessment (7th ed.), and Cook & Hegedus, Orthopedic Physical Examination Tests: An Evidence-Based Approach (2nd ed.).

No accuracy study

LFCN Neurodynamic Test (Side-Lying)

Procedure

Patient lying on the unaffected side with the lower hip and knee bent. Extend and adduct the upper (test) hip with the knee bent, then add neck flexion and extension to see whether symptoms change.

Positive Finding

Reproduction of the outer-thigh symptoms that changes with neck movement.

Interpretation

Suggests mechanosensitivity of the LFCN and can guide neural mobilisation. Evidence for this test is limited. One small study (Paneyala 2024: 30 people with meralgia paraesthetica confirmed on nerve conduction, 30 people with other causes of thigh symptoms) reported high figures for this test, but its tables give different numbers for the same result, so no figure is shown.

Sources

  • RelatedPaneyala S, S Chandrashekhar N, Sundaramurthy H, Prashant A, Krishna L. Efficacy of Clinical Tests in the Diagnosis of Meralgia Paresthetica: A Case Control Study. Case Rep Med. 2024;2024:5191280.

Further reading

No accuracy study

Tinel's Sign at Inguinal Ligament

Procedure

Gently tap just medial and below the ASIS.

Positive Finding

Tingling spreading down the outer thigh.

Interpretation

Supports irritation of the LFCN. One small study (Paneyala 2024: 30 people with meralgia paraesthetica confirmed on nerve conduction, 30 people with other causes of thigh symptoms) reported high figures for this test, but its tables give different numbers for the same result, so no figure is shown.

Sources

  • Educational sitePhysiopedia. Tinel's Test.
  • RelatedPaneyala S, S Chandrashekhar N, Sundaramurthy H, Prashant A, Krishna L. Efficacy of Clinical Tests in the Diagnosis of Meralgia Paresthetica: A Case Control Study. Case Rep Med. 2024;2024:5191280.
No accuracy study

Inguinal Ligament Palpation Test

Procedure

Palpate just medial and below the anterior superior iliac spine (ASIS), where the lateral femoral cutaneous nerve (LFCN) passes under or through the inguinal ligament, comparing sides.

Positive Finding

Local tenderness reproducing burning, tingling or numbness over the outer thigh.

Interpretation

Supports LFCN entrapment when the symptoms are purely sensory and in the nerve's area. Ask about tight belts, waistbands, weight gain, pregnancy and recent surgery or seat-belt injury.

Sources

No accuracy study

Hip Extension Provocation

Procedure

Patient lying on the unaffected side. Extend the test hip, adding adduction, and hold for up to 30 seconds.

Positive Finding

Reproduction of the outer-thigh symptoms.

Interpretation

Hip extension tensions the LFCN at the inguinal ligament and may reproduce symptoms. It is not the Ober test (which assesses the iliotibial band) and does not diagnose the problem on its own.

Further reading

No accuracy study

Sensory Testing (Light Touch & Two-Point Discrimination)

Procedure

Map light touch and pin-prick over the front and outer thigh and compare with the other side. Check hip flexor and quadriceps strength and the knee reflex.

Positive Finding

Reduced or altered feeling in an area on the front and outer thigh, with normal strength and reflexes.

Interpretation

Meralgia paraesthetica is purely sensory. Weakness of hip flexion or knee extension, a reduced knee reflex or numbness below the knee points to an L2–L4 nerve root or femoral nerve problem. Back pain with neurological signs, weight loss or a pelvic mass needs medical referral.

Sources

No accuracy study

Straight Leg Raise (Lumbar Screen)

Procedure

Patient lying on their back. Raise the straight leg slowly, adding ankle dorsiflexion and neck flexion to differentiate.

Positive Finding

Reproduction of leg symptoms that changes with ankle or neck movement.

Interpretation

Tests the sciatic nerve and lower lumbar roots, not the LFCN. Use it to screen for a lumbar cause; a positive test points away from meralgia paraesthetica.

Further reading

⚠ Red Flags

  • •Bilateral symptoms suggesting systemic neuropathy or nerve root compression
  • •Progressive neurological deficit with motor weakness
  • •Signs of infection at groin (fever, lymphadenopathy, purulent drainage)
  • •History of trauma or groin surgery with acute onset of symptoms
  • •Presence of palpable groin mass suggesting hernia or malignancy
  • •Cauda equina syndrome indicators (bowel/bladder dysfunction, bilateral leg symptoms)

⚡ Yellow Flags

  • •Health anxiety or excessive concern about nerve damage
  • •Catastrophic thinking about symptom progression
  • •Significant psychosocial stress exacerbating symptom perception
  • •Secondary gain from symptom reporting
  • •Poor coping strategies leading to activity avoidance
  • •Comorbid depression or anxiety affecting pain perception

Osteopathic Techniques

Meralgia paraesthetica is usually benign and often settles on its own. Care is reassurance and taking pressure off the nerve near the groin: avoid tight belts or clothing, and lose weight if that is a factor. Physical therapy is not a proven treatment, and a Cochrane review found no randomised trials of any treatment.

Region

Psoas major

Technique

Muscle energy, psoasNo trials found

Rationale

Muscle energy technique to lengthen the psoas.

How it's done, cautions & evidence

How it's done

The hip is taken into extension to the barrier (prone, or supine with the leg off the table). The patient pulls the hip toward flexion for 3–5 seconds against equal resistance, relaxes, and the hip is taken further into extension. Repeat 3–5 times, then re-check.

Cautions

Do not use with a fracture in the area, an unstable pelvis or hip, recent surgery, or a patient who cannot contract on request or follow directions.

Evidence in Meralgia Paraesthetica

Searched 26 Oct 2026: no trials of psoas MET in meralgia paraesthetica.

Region

Upper lumbar spine (L2–L3) and hip

Technique

Articulation, lumbarNo trials found

Rationale

Gentle mobilisation of the lumbar segments that give rise to the nerve.

How it's done, cautions & evidence

How it's done

Rhythmic, low-velocity movement of restricted lumbar segments within their passive range, with no thrust, usually side-lying or prone. The amplitude can vary.

Cautions

Side effects reported in trials were mild and short-lived: soreness, tiredness or a flare of existing symptoms.

Evidence in Meralgia Paraesthetica

Searched 26 Oct 2026: no trials of lumbar mobilisation in meralgia paraesthetica.

Sources

Region

Rectus femoris and hip flexors, away from the inguinal ligament

Technique

Soft tissue, hip and thighNo trials found

Rationale

Soft tissue to the hip flexors, including rectus femoris.

How it's done & evidence

How it's done

Hands-on kneading, stretching and sustained pressure to the muscles around the hip and thigh: the hip flexors, adductors and hamstrings, and tensor fasciae latae with the iliotibial band.

Evidence in Meralgia Paraesthetica

Searched 26 Oct 2026: no trials of soft tissue technique in meralgia paraesthetica.

Sources

Rehabilitation Exercises

Supine Hip Flexor Stretch (Psoas and Rectus Femoris)

StretchingBeginner

Prone Hip Extension Stretch

StretchingBeginner

Quadriceps Stretch (Standing)

StretchingBeginner

Active Hip Flexion and Extension

Range of MotionBeginner

Supine Glute Bridge with Hold

StrengtheningIntermediate

Clamshells (Hip Abduction)

StrengtheningBeginner

Side-Lying Hip Abduction

StrengtheningIntermediate

Transverse Abdominis Activation (Supine)

Core StrengtheningBeginner

Pelvic Tilt Exercise

PosturalBeginner

Single-Leg Stance with Hip Support

BalanceIntermediate

Step-Ups (Low Step)

StrengtheningIntermediate

Hip Internal and External Rotation (Supine)

Range of MotionBeginner

Referral Criteria

  • •Persistent symptoms beyond 12 weeks despite conservative treatment
  • •Significant functional limitation affecting work or activities of daily living
  • •Bilateral symptoms or progressive neurological deficit suggesting systemic disease
  • •Suspected underlying hernia or mass requiring surgical assessment
  • •Motor weakness developing in the lower limb
  • •Signs of infection (fever, purulent discharge, lymphadenopathy)
  • •Patient preference for specialist nerve block or surgical decompression
  • •Need for electrodiagnostic testing (EMG/NCS) to confirm diagnosis
  • •Cauda equina or conus medullaris symptoms (bowel/bladder dysfunction, perineal numbness)