Jump to content
We need you! See something you could improve? Make an edit and help improve WikSM for everyone.

Meralgia Paresthetica

From WikiSM

Other Names

  • Meralgia Paresthetica (MP)
  • Entrapment of the Lateral Cutaneus Nerve of the Thigh
  • Entrapment of the Lateral Femoral Cutaneous Nerve
  • Entrapment of Nervus Cutaneous Femoris Lateralis
  • Bernhardt-Roth Syndrome
  • LCN (lateral cutaneous nerve) neuralgia
  • LFCN Neuropraxia
  • Lateral Femoral Cutaneous Nerve Entrapment
  • Lateral Femoral Cutaneous Neuropathy
  • Lateral Femoral Cutaneous Nerve Syndrome
  • Lateral Femoral Cutaneous Neuralgia
  • Bernhardt-Roth Neuralgia
  • Anterolateral Thigh Neuropathy
  • Lateral Thigh Paresthesia Syndrome
  • Entrapment Neuropathy of the Lateral Femoral Cutaneous Nerve
  • LFCN Entrapment Syndrome

Background

History

  • MP first described by Hager in 1885 (need citation)
  • Named by Roth in 1895 (need citation)

Epidemiology

  • General
    • Average age is 30-40 years
    • Males greater than females
    • Cases are bilateral about 20% of the time[1]
  • Incidence
    • Rate of 32.6 - 43 cases per 100,000 patient years in the general population[2]
    • 247 cases per 100,000 patient years in individuals with diabetes mellitus[3]

Introduction

Anatomy and distribution of lateral femoral cutaneous nerve
Drawing of the course of the lateral femoral cutaneous nerve (LFCN) and its relation to muscles, fascias and the inguinal ligament[4]

General

  • Characterized by nerve entrapment resulting in pain, paresthesias, and sensory loss within the distribution of the LFCN
  • Compression of the nerve most commonly occurs as the nerve exits the pelvis
  • The diagnosis is primarily clinical
  • Treatment is typically conservative except in refractory cases
  • Paucity of research makes diagnosis, treatment challenging

Etiology

  • Idiopathic or spontaneous
    • No clear cause often associated with multiple risk factors
    • Mechanical risk factors refers to increased abdominal pressure (pregnancy, obesity, belts, corsets, tight pants)
    • Metabolic risk factors include lead poisoning, Alcoholism, Hypothyroidism, and Diabetes
  • Iatrogenic
    • Associated with surgical procedures including hip arthroplasty, anterior hip resufracing, spinal surgery
    • Goulding et al estimated 81% of patients had LFCN neuropraxia following THA[5]
    • Gupta et al found 13/110 (12%) patients had LFCN neuropraxia following posterior lumbar spine surgery[6]
    • Mirovsky estimated about 20% of spine surgery cases develop LFCN neuropraxia[7]
    • Less commonly linked to iliac bone harvesting, open and laparoscopic appendectomy, cesarean section with epidural analgesics, and OBGYN surgery

Anatomy of the Lateral Femoral Cutaneous Nerve

  • Sensory nerve with variable contributions from L1 to L3
  • Distribution: anterolateral thigh
  • Originates from the Lumbar Plexus
  • Significant anatomical variation

Associated Condition

Risk Factors

Differential Diagnosis

Differential Diagnosis Hip Pain

Differential Diagnosis Thigh Pain

Clinical Features

Neurodynamic Testing for Meralgia Parasthetica[15]

History

  • A careful review of history to identify risk factors should be performed
  • Patients may characterize pain as burning, numbness, muscle aches, coldness, lightning pain, or buzzing
    • Location is typically primarily lateral thigh (73%), anterior thigh (26%)[16]
    • Unilateral in 78% of cases[17]
  • Symptoms may wax or wane
  • May be worse with prolonged standing, walking, hip extension
  • May be alleviated with sitting

Physical Exam: Physical Exam Hip

  • There may be reproducible tenderness on the lateral aspect of the Inguinal Ligament where the nerve crosses
    • medial and inferior to the anterior superior iliac spine (ASIS)
  • In some cases, hair loss may be evident due to recurrent friction or rubbing[18]
  • Hallmark finding: altered sensation (hypoesthesia, hyperesthesia, or allodynia) confined to the anterolateral thigh in the LFCN distribution
    • Typically sparing the medial thigh and extending no further distally than the knee
  • Motor exam should be normal
  • Deep tendon reflexes should be intact

Special Tests

Evaluation

Load video
YouTube
Ultrasound guided lateral femoral cutaneous nerve block
Coronal MRI shows course of the lateral femoral cutaneous nerve[21]

Radiographs

EMG/NCS

  • Findings
    • Somatosensory evoked potentials (81.3% sensitivity)[22]
    • Sensory nerve conduction (65.2% sensitivity)
  • Limitations
    • Increased body habitus

MRI

  • Magnetic Resonance Neurography (MRN) has been utilized
  • Chabara et al blinded two radiologists to 11 confirmed and 28 control cases[23]
    • Sensitivity: 71-73%
    • Specificity: 94-95%
    • PPV: 71-79%
    • NPV: 94%
    • Diagnostic Accuracy: 90-91%

Diagnostic LFCN Nerve Block

  • Consider diagnostic block where the LFCN exits the pelvis at the inguinal ligament
    • Approximate site of injection is 1cm medial and inferior to the ASIS or at the point of maximum pain

Classification

  • Idiopathic vs Iatrogenic

Management

Proposed treatment algorithm[24]

TENS Unit


Nonoperative

  • General
    • Goal: If known, treat underlying cause (i.e. diabetes, occupational risks, etc)
    • Relative rest from offending activities
    • Protection of the affected area
  • Analgesics
  • Physical Therapy
  • Manual Therapy
    • Case reports and series suggest Active Release Techniques (ART), mobilization/ manipulation for the pelvis, myofascial therapy for the rectus femoris and illiopsoas, transverse friction massage of the inguinal ligament, stretching exercises for the hip and pelvic musculature, and pelvic stabilization/abdominal core exercises may help[25][26]
  • Kinesiology Taping
    • Kalichman et al found improvement in symptoms in a small pilot study[27]

Procedures

  • Acupuncture
    • Case series suggests benfit when combined with cupping[28]
  • Lateral Femoral Cutaneous Nerve Injection
    • Taglifi injected 20 patients with EMG confirmed MP[29]
      • 16/20 (80%) had improvement at 1 week post injection
      • 100% of patients experienced a complete resolution of symptoms and significant improvements on the QOL scale
    • Tumber et al also demonstrated efficacy of CSI after 2 injections spaced out 3 weeks apart[30]
    • Note: Can be performed diagnostically/ therapeutically without corticosteroids
  • Pulsed Radiofrequency Ablation
    • 4 case reports have suggested efficacy[31]
  • Spinal Cord Stimulator
    • One case discusses a patient refractory to other treatments who was pain free after the insertion of a spinal cord stimulator[32]

Operative

  • Indications
    • Unknown
  • Technique
    • LFCN Neurolysis
    • LFCN Resection

Rehab and Return to Play

Early rehab exercises for Meralgia Paresthetica
Subacute rehab exercises for Meralgia Paresthetica

Rehabilitation

  • Phase 1: Acute Management (Weeks 0-2)
    • Goals: Reduce nerve compression, decrease pain/paresthesias, identify/eliminate causative factors
    • Activity Modifications: avoid prolonged standing, eliminate tight clothing, avoid hip hyperextension and prolonged flexion, modify sleep position to avoid lateral thigh pressure
    • Pain Management: NSAIDS as needed, neuropathic pain meds if needed, ice
    • Therapeutic Interventions: TENS Unit, soft tissue mobilization, avoid direct pressure
    • Patient education
  • Phase 2: Subacute Rehabilitation (Weeks 2-6)
    • Goals: Restore normal sensation, improve functional mobility, strengthen core and hip musculature
    • Progression Criteria: Pain reduction, tolerate 30 minutes of standing, no worsening of symptoms with daily activities
    • Therapeutic Exercise: Core stabilization exercises, hip flexor stretching, abdominal stretching, pelvic tilt exercises, gentle hip ROM
    • Manual Therapy: Soft tissue mobilization (iliacus, psoas, and tensor fasciae latae), neural mobilization techniques, myofascial release of anterior hip structures
    • Modalities: Continue TENS Unit as needed for symptom control, Ultrasound therapy
    • Functional Training: Gait training with focus on neutral pelvic alignment Postural correction exercises, Gradual return to walking: progress from 10 to 30 minutes continuously
  • Phase 3: Advanced Rehabilitation (Weeks 6-12)
    • Goals: Full functional restoration, return to sport-specific activities, prevent recurrence
    • Progression Criteria: pain reduced, improved sensation in lateral thigh, able to perform ADLs without symptom exacerbation
    • Advanced Strengthening: progressive resistance training for hip and core muscles, single-leg balance exercises, functional movement patterns, sport specific strengthening
    • Cardiovascular Conditioning: Low-impact aerobic exercise, progress to higher-impact activities as tolerated, monitor for symptom recurrence
    • Neuromuscular Training: proprioceptive exercises, dynamic balance activities, agility drills
    • Maintenance: continue core and hip strengthening, ongoing postural awareness, equipment/clothing modifications as needed
  • Adjunctive Interventions if conservative management fails
    • Weeks 4-8: Consider ultrasound-guided corticosteroid injection if:
    • Weeks 12+: Refer for surgical consultation if: Persistent symptoms after 3 months of conservative management, progressive sensory loss, severe functional impairment

Exercise Rehab Program PDFs

Return to Play

  • Clearance Criteria for Return to Play
    • Pain level ≤2/10 with sport-specific activities
    • No progressive sensory loss
    • Adequate pain control without performance-impairing medications
    • Restoration of sport-specific skills without compensation patterns
    • Psychosocial readiness to return
    • Compliance with equipment modifications
  • Cycling/Rowing
    • Particular attention to saddle/seat positioning
    • Avoid excessive hip flexion angles
    • May require longer rehabilitation due to sustained compression
  • Running Sports
    • Gradual return to running mileage (10% increase per week)
    • Monitor for symptoms with increased distance/intensity
    • Address any biomechanical issues (leg length, pelvic alignment)
  • Contact Sports
    • Protective padding over ASIS recommended
    • Avoid direct trauma to anterior hip region
    • May return to play with mild residual symptoms if protective equipment adequate
  • Weightlifting
    • Avoid belts that compress inguinal region
    • Modify squat depth if hip hyperextension provocative
    • Use alternative equipment positioning

Prognosis and Complications

Prognosis

  • Most cases cases of MP have a favorable course
    • 69% of patients experiencing spontaneous improvement[33]
  • Conservative management
    • 85% will recover with conservative treatment[34]
    • Success rates are highest when causative factors can be identified and eliminated.
  • Corticosteroid injection
    • One meta-analysis reported 83% cure or improvement, while another found only 22% complete pain relief[35]
  • Surgical approach
    • Surgical decompression achieves complete pain relief in 63% of patients, with 88% experiencing cure or improvement[36]
    • Early studies suggest resection is superior to neurolysis[37][38]
  • Predictors of favorable outcome[39]
    • Iatrogenic etiology (post-surgical or traumatic)
    • Identifiable and modifiable causative factors
    • Shorter duration of symptoms before treatment
    • Absence of metabolic conditions
  • Predictors of poor outcomes[40]
    • Metabolic etiologies (obesity, diabetes) - may require up to 12 months for recovery
    • Prolonged symptom duration before intervention
    • Idiopathic cases without clear causative factors

Complications

  • Chronic neuropathic pain pain
  • Inability to return to work
  • Inability to return to sport
  • Reduced quality of life due to pain and paresthesias
  • Psychological distress from chronic symptoms

See Also

Internal

External

References

  1. ↑ Ecker AD. Diagnosis of meralgia paresthetica. JAMA. 1985;253:976.
  2. ↑ 2.0 2.1 van Slobbe AM, Bohnen AM, Bernsen RM, et al. Incidence rates and determinants in meralgia paresthetica in general practice. J Neurol. 2004;251(3):294-297.
  3. ↑ 3.0 3.1 Parisi TJ, Mandrekar J, Dyck PJ, et al. Meralgia paresthetica: relation to obesity, advanced age, and diabetes mellitus. Neurology. 2011;77(16):1538-1542.
  4. ↑ de Ruiter, Godard CW, Johannes AL Wurzer, and Alfred Kloet. "Decision making in the surgical treatment of meralgia paresthetica: neurolysis versus neurectomy." Acta neurochirurgica 154 (2012): 1765-1772.
  5. ↑ Goulding K, Beaule PE, Kim PR, et al. Incidence of lateral femoral cutaneous nerve neuropraxia after anterior approach hip arthroplasty. Clin Orthop Relat Res. 2010;468(9):2397-2404.
  6. ↑ Gupta A, Muzumdar D, Ramani PS. Meralgia paraesthetica following lumbar spine surgery: a study in 110 consecutive surgically treated cases. Neurol India. 2004;52(1):64-66.
  7. ↑ Mirovsky Y, Neuwirth M. Injuries to the lateral femoral cutaneous nerve during spine surgery. Spine. 2000; 25:1266–1269.
  8. ↑ Onat, Sule Sahin, Ayse Merve Ata, and Levent Ozcakar. "Ultrasound-guided diagnosis and treatment of meralgia paresthetica." Pain Physician 19.4 (2016): E667.
  9. ↑ Macgregor J, Moncur JA. Meralgia paraesthetica-a sports lesion in girl gymnasts. Br J Sports Med. 1977;11(1):16-19.
  10. ↑ Otoshi K, Itoh Y, Tsujino A, et al. Case report: meralgia paresthetica in a baseball pitcher. Clin Orthop Relat Res. 2008;466(9):2268-2270.
  11. ↑ Ulkar B, Yildiz Y, Kunduracioglu B. Meralgia paresthetica: a long-standing performance-limiting cause of anterior thigh pain in a soccer player. Am J Sports Med. 2003;31(5):787-789.
  12. ↑ Szewczyk J, Hoffmann M, Kabelis J. Meralgia paraesthetica in a body-builder. Sportverletz Sportschaden. 1994;8(1):43-45.
  13. ↑ Kho KH, Blijham PJ, Zwarts MJ. Meralgia paresthetica after strenuous exercise. Muscle Nerve. 2005;31(6):761-763.
  14. ↑ Goldberg VM, Jacobs B. Osteoid osteoma of the hip in children. Clin Orthop Relat Res. 1975;106:41–47.
  15. ↑ Koesterer, Thomas, Aaron Blanchard, and Patrick Donnelly. "Meralgia paresthetica in a male collegiate Lacrosse player." International Journal of Athletic Therapy and Training 19.5 (2014): 16-19.
  16. ↑ Seror P, Seror R. Meralgia paresthetica: clinical and electrophysiological diagnosis in 120 cases. Muscle Nerve. 2006;33(5):650-654.
  17. ↑ Khalil, Nofal, Alessia Nicotra, and Wojtek Rakowicz. "Treatment for meralgia paraesthetica." Cochrane Database of Systematic Reviews 12 (2012).
  18. ↑ Harney D, Patijn J. Meralgia paresthetica: diagnosis and management strategies. Pain Med. 2007;8:669–677
  19. ↑ Nouraei SA, Anand B, Spink G, et al. A novel approach to the diagnosis and management of meralgia paresthetica. Neurosurgery. 2007;60(4):696-700.
  20. ↑ 20.0 20.1 20.2 Paneyala, Shasthara, et al. "Efficacy of Clinical Tests in the Diagnosis of Meralgia Paresthetica: A Case Control Study." Case Reports in Medicine 2024.1 (2024): 5191280.
  21. ↑ Case courtesy of Ali Alsmair, Radiopaedia.org, rID: 169874
  22. ↑ Seror P. Somatosensory evoked potentials for the electrodiagnosis of meralgia paresthetica. Muscle Nerve. 2004;29(2):309-312.
  23. ↑ Chhabra A, Del Grande F, Soldatos T, et al. Meralgia paresthetica: 3-Tesla magnetic resonance neurography. Skeletal Radiol. 2013;42(6):803-808. doi:10.1007/s00256-012-1557-4
  24. ↑ Diagnosis and Recent Management of Meralgia Paresthetica
  25. ↑ Skaggs CD, Winchester BA, Vianin M, et al. A manual therapy and exercise approach to meralgia paresthetica in pregnancy: a case report. J Chiropr Med. 2006;5(3):92-96.
  26. ↑ Houle S. Chiropractic management of chronic idiopathic meralgia paresthetica: a case study. J Chiropr Med. 2012;11(1):36-41.
  27. ↑ Kalichman L, Vered E, Volchek L. Relieving symptoms of meralgia paresthetica using Kinesio taping: a pilot study. Arch Phys Med Rehabil. 2010;91(7):1137-1139.
  28. ↑ Wang X-z, Zhu D-x. Treatment of 43 cases of lateral femoral cutaneous neuritis with pricking and cupping therapy. J of Acup and Tuina Sci. 2009;7(6):366-367.
  29. ↑ Tagliafi co A, Serafi ni G, Lacelli F, et al. Ultrasoundguided treatment of meralgia paresthetica (lateral femoral cutaneous neuropathy): technical description and results of treatment in 20 consecutive patients. J Ultrasound Med. 2011;30(10):1341-1346.
  30. ↑ Tumber PS, Bhatia A, Chan VW. Ultrasound-guided lateral femoral cutaneous nerve block for meralgia paresthetica. Anesth Analg. 2008;106:1021–1022.
  31. ↑ Patijn, Jacob, et al. "20. Meralgia paresthetica." Pain Practice 11.3 (2011): 302-308.
  32. ↑ Barna SA, Hu MM, Buxo C, Trella J, Cosgrove GR. Spinal cord stimulation for treatment of meralgia paresthetica. Pain Physician. 2005;8:315–318.
  33. ↑ Khalil, Nofal, Alessia Nicotra, and Wojtek Rakowicz. "Treatment for meralgia paraesthetica." Cochrane Database of Systematic Reviews 3 (2008).
  34. ↑ Dureja GP, Gulaya V, Jayalakshmi TS, Mandal P. Management of meralgia paresthetica: a multimodality regimen. Anesth Analg. 1995;80:1060–1061.
  35. ↑ Lu, Victor M., et al. "Meralgia paresthetica treated by injection, decompression, and neurectomy: a systematic review and meta-analysis of pain and operative outcomes." Journal of neurosurgery 135.3 (2021): 912-922.
  36. ↑ Scholz, Christoph, et al. "Meralgia paresthetica: relevance, diagnosis, and treatment." Deutsches Ärzteblatt International 120.39 (2023): 655.
  37. ↑ de Ruiter GC, Wurzer JA, Kloet A. Decision making in the surgical treatment of meralgia paresthetica: neurolysis versus neurectomy. Acta Neurochir (Wien). 2012;154(10):1765-1772.
  38. ↑ Emamhadi M. Surgery for Meralgia Paresthetica: neurolysis versus nerve resection. Turk Neurosurg. 2012;22(6):758-762.
  39. ↑ Reuter, Francesco, et al. "Outcomes of lateral femoral cutaneous nerve decompression surgery in meralgia paraesthetica: assessment of pain, sensory deficits, and quality of life." International Orthopaedics 49.4 (2025): 863-870.
  40. ↑ Ataizi, Zeki Serdar, Kemal Ertilav, and Serdar Ercan. "Surgical options for meralgia paresthetica: long-term outcomes in 13 cases." British Journal of Neurosurgery 33.2 (2019): 188-191.
Created by:
John Kiel on 14 June 2019 08:39:20
Authors:
Last edited:
20 May 2026 19:14:33
Categories:
Retrieved from "https://wikism.org/w/index.php?title=Meralgia_Paresthetica&oldid=43532"