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Current Management of Carpal Tunnel Syndrome

Original Editor - Wanda van Niekerk based on the course by Loren Szmiga

Top Contributors - Wanda van Niekerk, Jess Bell, Ewa Jaraczewska and Kim Jackson  

Page Summary

  • Carpal tunnel syndrome (CTS), the most common compressive neuropathy, is caused by compression of the median nerve at the wrist.
  • CTS symptoms (numbness, tingling, pain) affect the thumb, index finger, middle finger and radial half of the ring finger, and may progress to weakness and decreased fine motor coordination.
  • CTS diagnosis is mainly clinical; a Carpal Tunnel Syndrome-6 (CTS-6) score above 12 suggests an 80% probability of the condition.
  • Mild to moderate CTS is usually managed conservatively, for example with night splinting, while severe or persistent cases may need open or endoscopic surgical release.

Introduction

Carpal tunnel syndrome (CTS) is an entrapment or compression of the median nerve at the wrist as it passes through the carpal tunnel.[1][2] It is the most common compressive neuropathy and affects more females than males.[3] Incidence is highest in middle-aged and older adults. In one general population study, incidence peaked between 50 and 59 years in women and between 70 and 79 years in men.[4]

Symptoms, including pain, tingling, and numbness, occur in the thumb, index finger, middle finger, and the radial half of the ring finger.[5][6] Management typically includes a trial of conservative management for people with mild to moderate symptoms. Surgical release is often recommended for people with severe symptoms or when conservative management is unsuccessful.[7] This page discusses the anatomy, physiology, diagnosis and management of carpal tunnel syndrome.

Clinically Relevant Anatomy

The carpal tunnel is an inextensible osteofibrous canal.[8][9] The carpal bones form an arch that makes up the floor and sides of the carpal tunnel. The flexor retinaculum (transverse carpal ligament) forms the roof, attaching to the tubercles of the scaphoid and trapezium on the lateral side and to the pisiform and hook of hamate on the medial side.[8][9]

Anatomy of the Carpal Tunnel

Ten structures pass through the carpal tunnel:

  • the four tendons of flexor digitorum superficialis
  • the four tendons of flexor digitorum profundus
  • the tendon of flexor pollicis longus
  • the median nerve

Flexor carpi radialis does not pass through the tunnel itself; it runs in a separate compartment within the flexor retinaculum.[10]

Path of the Median Nerve

The median nerve is a mixed sensory and motor nerve that originates in the axilla.[11] It arises from the medial and lateral cords of the brachial plexus (nerve roots C5 to T1) and runs down the arm next to the brachial artery before entering the cubital fossa at the elbow.

Path of the Median Nerve

The median nerve is the principal nerve supply to the anterior compartment of the forearm. It supplies the superficial and intermediate layers of the forearm flexors, except for flexor carpi ulnaris. These muscles are pronator teres, palmaris longus, flexor digitorum superficialis and flexor carpi radialis. Its anterior interosseous branch supplies the deep layer, which is flexor pollicis longus, pronator quadratus and the lateral half of flexor digitorum profundus.[8][12]

The median nerve enters the hand through the carpal tunnel. Distal to the carpal tunnel, it supplies five intrinsic hand muscles: three thenar muscles (abductor pollicis brevis, opponens pollicis and flexor pollicis brevis) and the first and second lumbricals.[8][12]

The median nerve supplies sensation to the palmar surface of the thumb, index finger, middle finger and radial half of the ring finger, and the dorsal aspects of the distal halves of these digits.[8][12]

Aetiology

Carpal tunnel syndrome occurs when the median nerve is compressed under the flexor retinaculum, but the reason this compression develops is not known.[7]

Several factors are associated with a higher risk of CTS, including:[13][14]

  • female sex
  • pregnancy
  • obesity
  • diabetes and other endocrine disorders
  • smoking
  • rheumatic conditions and other joint disorders
  • previous wrist fracture or hand trauma
  • anthropometric measures
  • genetic predisposition

Among men specifically, carpal tunnel syndrome may be linked with occupational factors, such as repetitive wrist movements, hand-arm vibration, forceful gripping, cold exposure and various psychosocial factors.[14]

Pathophysiology

Carpal tunnel syndrome is associated with increased pressure in the carpal tunnel.[15] Wrist movements, such as wrist flexion, extension and radioulnar deviation, cause fluctuations in carpal tunnel pressure,[16] and these pressure changes are more pronounced in people with carpal tunnel syndrome than in healthy controls.[17] The increased pressure on the median nerve is the basis for the presenting symptoms, such as pain, tingling and weakness.[7] It is hypothesised that compression of the median nerve leads to local ischaemia, which may cause demyelination of the nerve fibres.[13]

Clinical Presentation

Carpal tunnel syndrome symptoms can develop gradually over months, years or decades.[18] Sudden or acute onset is uncommon, but can occur after trauma.[18][19] The main symptoms are numbness, tingling, pins and needles or burning in the median nerve distribution of the hand (thumb, index finger, middle finger and radial half of the ring finger). Symptoms are worst at night or early morning and may be relieved by shaking of the hand (the flick sign).[18]

As symptoms worsen, intermittent pain and numbness may be experienced during daytime activities such as driving, lifting, working on the computer, and symptoms often increase with static gripping of objects such as a phone or steering wheel. People may also experience weakness, including reduced grip and pinch strength, and decreased fine motor coordination.[8][18]

Diagnosing Carpal Tunnel Syndrome

The diagnosis of carpal tunnel syndrome is largely clinical, based on the person’s symptoms and physical examination findings.[13] Diagnosis should combine findings from the history, symptom location and clinical diagnostic tools (such as the CTS-6).[20] Further tests, such as electrodiagnostic studies or ultrasound, may be used when the diagnosis is uncertain.[7][2]

Carpal Tunnel Syndrome-6 (CTS-6)

Both the American Academy of Orthopaedic Surgeons (AAOS) and American Physical Therapy Association (APTA) support the use of the CTS-6 to diagnose carpal tunnel syndrome in place of electrodiagnostic tests (nerve conduction studies and EMG) or ultrasonography.[7][3] This tool provides a weighted score based on six history and examination findings. A score of more than 12 correlates with an 80% probability of carpal tunnel syndrome.[1][2]

CTS-6 Questionnaire[1]
Clinical question Point value
Numbness predominantly or exclusively in median nerve area 3.5
Numbness at night (nocturnal) 4
Thenar atrophy and/or weakness 5
Positive Phalen's test 5
Loss of two-point discrimination (held 5 mm or less apart from one another) 4.5
Positive Tinel's sign 4

Electrodiagnostic Assessment and Ultrasound

Electrodiagnostic assessment (e.g. nerve conduction studies/EMG) or ultrasound are recommended when the positive predictive value of the CTS-6 is low.[7][2]

Electrodiagnostic tests can provide a measure of myelinated nerve fibre function compared to other nerves and may be able to differentiate carpal tunnel syndrome from other nerve injuries or compression neuropathies.[3] Similarly, neuromuscular ultrasound can provide information on median nerve morphology and the surrounding structures.[21]

Magnetic Resonance Imaging (MRI) and X-ray

MRI is not recommended for the routine diagnosis of carpal tunnel syndrome; AAOS reports that there is moderate evidence against its use.[7] X-ray may be useful when there is a history of trauma or suspected bony pathology.[22]

Physical Examination

The physical examination includes a range of carpal-tunnel specific tests.

Location of symptoms: sympton location should be recorded. The APTA recommends the Katz and Stirrat hand symptom diagram be used to identify the location and nature of symptoms.[3]

Tinel’s sign: part of the CTS-6. To perform this test, the clinician lightly taps over the median nerve at the patient's wrist. The test is positive if tingling is reproduced in the median nerve distribution.

[23]

[24]

Phalen’s test: part of the CTS-6. The patient fully flexes both wrists by placing the dorsal surfaces of their hands together for 30 to 60 seconds. The test is positive when symptoms (numbness, tingling, pain) are reproduced.

Reverse Phalen’s test: the patient fully extends both wrists by placing the palms together (the prayer position) for 30 to 60 seconds. The test is positive when symptoms are reproduced.

[25]
[26]

Carpal compression test: the clinician applies firm pressure directly over the patient's carpal tunnel for 30 seconds. The test is positive when paraesthesia, pain or other symptoms are reproduced.

Carpal Compression Test video provided by Clinically Relevant

Differential Diagnosis

The differential diagnosis should consider all conditions which could cause dysfunction of the median nerve, the brachial plexus, C5 to C8 nerve root systems and the central nervous system.[27] Conditions to consider can include[27]:

Conservative Management of Carpal Tunnel Syndrome

The conservative management of carpal tunnel syndrome centres around splinting, education, exercise, manual therapy and medication.

Splinting: a forearm-based wrist orthosis that holds the wrist in neutral or close to neutral may be used at night for short- or mid-term improvement for people with mild to moderate carpal tunnel syndrome.[3] A Cochrane review notes that while the benefits of splinting may be small, it remains an inexpensive intervention that has no known long-term side effects, and these small benefits may “justify its use in people who are not interested in invasive interventions”.[29]

Ergonomics education and activity modification: education may centre on modifying daily activities and avoiding positions that cause increased compression of the nerve. Ergonomics education may address desk and keyboard height, stroke force and mouse use. However, the evidence for these approaches is limited.[30][31][3]

Therapeutic exercise: a combined orthotic and stretching programme may be beneficial for people with mild to moderate carpal tunnel syndrome who are managing symptoms non-surgically and who have normal two-point discrimination and no thenar atrophy.[3]

Manual therapy and neurodynamic techniques: there is some evidence to support the short-term use of manual therapy (e.g. mobilisation, instrument-assisted soft tissue mobilisation) at the cervical spine and upper limb for people with mild to moderate carpal tunnel syndrome.[3] Neurodynamic techniques were found in a 2021 systematic review with meta-analysis to improve pain and function in the short term, but the certainty of the evidence was very low.[32] The 2026 APTA guideline makes no recommendation on neurodynamic mobilisation because the evidence is conflicting.[3]

Medication and injections: Corticosteroid injection may improve symptoms in the short term, but there is strong evidence to suggest that it does not provide long-term improvements, and non-steroidal anti-inflammatory drugs (NSAIDs) have been found to be no more effective than placebo.[7]

Surgical Management of Carpal Tunnel Syndrome

Surgery is usually considered for severe carpal tunnel syndrome or when symptoms persist despite non-surgical management.[7] Carpal tunnel release divides the flexor retinaculum (transverse carpal ligament). This creates space in the carpal tunnel and reduces pressure on the median nerve.[33][34] It can be performed as an open or an endoscopic procedure.

Open carpal tunnel release can be performed through a traditional incision or a mini-incision. It allows decompression and visualisation of the median nerve. Mini-incision techniques are considered safe, but there is a risk of incomplete release of the transverse carpal ligament. Open release is also considered safe.[33]

Endoscopic carpal tunnel release uses single-portal or two-portal techniques. It may allow quicker recovery of hand function and an earlier return to work,[7][35] but it has been associated with a higher risk of nerve injury (neuropraxia) and tendon injury.[35] Two-portal techniques are thought to allow better visualisation of the neurovascular structures, which may lower the risk of complications.[33]

Post-Surgical Rehabilitation

There is moderate evidence to suggest that postoperative supervised therapy does not need to be routinely prescribed after carpal tunnel release.[7] However, home exercise programmes are commonly given. Exercises are aimed at reducing stiffness, and therapy is short-term because recovery is usually quick after surgery.[30]

Common Postoperative Exercises

Finger abduction and adduction: performed with the hand resting on a table. This exercise activates the intrinsic muscles.[30]

Tendon glides: promote excursion of flexor digitorum profundus and flexor digitorum superficialis.[36][30] The patient moves from a straight hand into a hook fist, a full fist, a straight fist with the fingers touching the palm, the tabletop position, and back to a straight hand. This sequence can be repeated three to five times, but the number of sessions per day depends on stiffness. It may be beneficial to perform this exercise six to eight times a day if the patient is very stiff after surgery, and one to three times a day if stiffness is minimal.[30]

Finger Tendon Glide Exercises. [(A) straight; (B) hook; (C) fist; (D) straight fist; (E) table top.][37]

[38]

Digit blocking: may help to increase motion if a patient experiences stiffness after surgery. For example, if the proximal interphalangeal (PIP) or distal interphalangeal (DIP) joint is stiff, the patient blocks the joint below with their other hand and then bends the finger. This forces motion through the stiff joint. This motion can be repeated five times, with each repetition held for five seconds. It can be done with individual digits or all at once, depending on which joints lack motion.[30]

[39]
[40]

Thumb opposition (i.e. touching the thumb to the fifth finger): helps maintain thumb range and uses the thenar muscles.

[41]

Final Thoughts

Longstanding severe compression can cause axonal loss and permanent thenar weakness and atrophy, so people with constant numbness, weakness or atrophy should be referred promptly for a surgical opinion.[3] For a summary of current recommendations, see Hand Pain and Sensory Deficits: Carpal Tunnel Syndrome: Revision 2026.

References

  1. ↑ 1.0 1.1 1.2 Colliton EM, Fowler JR. Analysis of the CTS-6 questionnaire and development of a carpal tunnel syndrome decision tree. J Hand Surg Glob Online. 2026 Jan 30;8(2):100944.
  2. ↑ 2.0 2.1 2.2 2.3 Shapiro LM, Kamal R, Brault J, Chen K, Erickson M, Martin D, et al. American Academy of Orthopaedic Surgeons/ASSH clinical practice guideline summary management of carpal tunnel syndrome. J Am Acad Orthop Surg. 2025 Apr 1;33(7):e356-e366. Erratum for: J Am Acad Orthop Surg. 2026 Oct 15;34(20):e2922.
  3. ↑ 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 Erickson M, Lawrence M, Lazinski MJ, Scott K, Martin RL. Hand pain and sensory deficits: carpal tunnel syndrome: revision 2026. J Orthop Sports Phys Ther. 2026 Apr;56(4):CPG1-CPG79.
  4. ↑ Mondelli M, Giannini F, Giacchi M. Carpal tunnel syndrome incidence in a general population. Neurology. 2002 Jan 22;58(2):289-94.
  5. ↑ Buntragulpoontawee M, Tongprasert S, Khorana J, Kitisak K, Karinuntakul W, Pornjaksawan S, Phinyo P. The validation of the CTS-6 Evaluation Tool for diagnosing carpal tunnel syndrome (CTS) in Thai wheelchair users. PLoS One. 2025 Mar 25;20(3):e0319158.
  6. ↑ Đilvesi Đ, Jelača B, Knežević A, Živanović Ž, Pantelić V, Golubović J. Evolution of carpal tunnel syndrome treatment: a narrative review. NeuroSci. 2026 Jan 12;7(1):10.
  7. ↑ 7.00 7.01 7.02 7.03 7.04 7.05 7.06 7.07 7.08 7.09 7.10 American Academy of Orthopaedic Surgeons. Management of carpal tunnel syndrome evidence-based clinical practice guideline. aaos.org/cts2cpg Published 05/18/2024.  
  8. ↑ 8.0 8.1 8.2 8.3 8.4 8.5 Urits I, Gress K, Charipova K, Orhurhu V, Kaye AD, Viswanath O. Recent advances in the understanding and management of carpal tunnel syndrome: a comprehensive review. Current Pain and Headache Reports. 2019 Oct;23(10):1-8.
  9. ↑ 9.0 9.1 Cognet JM, Apard T, Garret J, Martinel V, Mares O. Ultrasound-guided carpal tunnel release: Anatomical landmarks, surgical technique, and literature review. Hand Surg Rehabil. 2025 Oct;44(5):102201.
  10. ↑ Bouredoucen H. Anatomy, variants, and multimodality imaging of flexor carpi radialis tendon pathology and post-therapeutic evaluation. Eur J Radiol. 2026 Nov;204:113175.
  11. ↑ Soubeyrand M, Melhem R, Protais M, Artuso M, Crézé M. Anatomy of the median nerve and its clinical applications. Hand Surg Rehabil. 2020 Feb;39(1):2-18.
  12. ↑ 12.0 12.1 12.2 Jajeh H, Lee A, Charls R, Coffin M, Sood A, Elgafy H. A clinical review of hand manifestations of cervical myelopathy, cervical radiculopathy, radial, ulnar, and median nerve neuropathies. J Spine Surg. 2024 Mar 20;10(1):120-134.
  13. ↑ 13.0 13.1 13.2 Osiak K, Elnazir P, Walocha JA, Pasternak A. Carpal tunnel syndrome: state-of-the-art review. Folia Morphologica. 2021 Nov 9.
  14. ↑ 14.0 14.1 Stjernbrandt A, Liv P, Jackson JA, Pettersson H, Lewis C, Punnett L, Wahlström J. Occupational biomechanical risk factors for carpal tunnel syndrome surgery: a prospective cohort study on 203 866 Swedish male construction workers followed for 19 years. Occup Environ Med. 2025 Aug 25;82(6):263-269.
  15. ↑ Li ZM, Jordan DB. Carpal tunnel mechanics and its relevance to carpal tunnel syndrome. Hum Mov Sci. 2023 Feb;87:103044.
  16. ↑ Li ZM, Jordan D. Change in carpal tunnel pressure with dynamic wrist flexion/extension and radioulnar deviation: a cadaveric study. J Orthop Res. 2026 Oct;44(10):e70294.
  17. ↑ Gelberman RH, Hergenroeder PT, Hargens AR, Lundborg GN, Akeson WH. The carpal tunnel syndrome. A study of carpal canal pressures. J Bone Joint Surg Am. 1981 Mar;63(3):380-3.
  18. ↑ 18.0 18.1 18.2 18.3 Wang L. Guiding treatment for carpal tunnel syndrome. Physical Medicine and Rehabilitation Clinics. 2018 Nov 1;29(4):751-60.
  19. ↑ Ku YC, Gannon M, Fang W, Norcini RC, Woodberry KM. Management of acute carpal tunnel syndrome: a systematic review. J Hand Surg Glob Online. 2023 Jul 20;5(5):606-611.
  20. ↑ Dabbagh A, MacDermid JC, Yong J, Packham TL, Grewal R, Boutsikari EC. Diagnostic test accuracy of provocative maneuvers for the diagnosis of carpal tunnel syndrome: a systematic review and meta-analysis. Phys Ther. 2023 Jun 5;103(6):pzad029.
  21. ↑ Walker FO, Cartwright MS, Alter KE, Visser LH, Hobson-Webb LD, Padua L, Strakowski JA, Preston DC, Boon AJ, Axer H, van Alfen N. Indications for neuromuscular ultrasound: Expert opinion and review of the literature. Clinical Neurophysiology. 2018 Dec 1;129(12):2658-79.
  22. ↑ Chammas M, Boretto J, Burmann LM, Ramos RM, Neto FCS, Silva JB. Carpal tunnel syndrome – part 1 (anatomy, physiology, aetiology and diagnosis). Revista brasileira de Ortopedia (English edition) 2014 September-October; 49 (5):429-436.
  23. ↑ Tim Fraticelli. PT Progress. Tinel's Sign for Carpal Tunnel Syndrome. Available from: https://www.youtube.com/watch?v=UgV71aUIgLo [last accessed 20/06/2022]
  24. ↑ BMJ Learning. Tests for carpal tunnel syndrome. Available from: https://www.youtube.com/watch?v=3JPJcnFaPhU[last accessed 20/06/2022]
  25. ↑ Clinical Physio. Phalens Test for Carpal Tunnel Syndrome | Clinical Physio. Available from: https://www.youtube.com/watch?v=EdC5QQV6A8w [last accessed 20/06/2022]
  26. ↑ Clinical Physio. Reverse Phalens Test for Carpal Tunnel Syndrome | Clinical Physio. Available from: https://www.youtube.com/watch?v=5Fc8oDOPOmY [last accessed 20/6/2022]
  27. ↑ 27.0 27.1 Physiopedia. Carpal Tunnel Syndrome.
  28. ↑ Wipperman J, Goerl K. Carpal tunnel syndrome: diagnosis and management. American family physician. 2016 Dec 15;94(12):993-9.
  29. ↑ Karjalainen TV, Lusa V, Page MJ, O'Connor D, Massy-Westropp N, Peters SE. Splinting for carpal tunnel syndrome. Cochrane Database Syst Rev. 2023 Feb 27;2(2):CD010003.
  30. ↑ 30.0 30.1 30.2 30.3 30.4 30.5 Szmiga, L. Carpal Tunnel Syndrome Course. Plus. 2022.
  31. ↑ Trillos-Chacón MC, Castillo-M JA, Tolosa-Guzman I, Medina AF, Ballesteros SM. Strategies for preventing carpal tunnel syndrome in the workplace: A systematic review. Applied Ergonomics. 2021 May 1;93:103353.
  32. ↑ Núñez de Arenas-Arroyo S, Cavero-Redondo I, Torres-Costoso A, Reina-Gutiérrez S, Álvarez-Bueno C, Martínez-Vizcaíno V. Short-term effects of neurodynamic techniques for treating carpal tunnel syndrome: a systematic review with meta-analysis. Journal of Orthopaedic & Sports Physical Therapy. 2021 Dec;51(12):566-80.
  33. ↑ 33.0 33.1 33.2 Pace V, Marzano F, Placella G. Update on surgical procedures for carpal tunnel syndrome: What is the current evidence and practice? What are the future research directions? World J Orthop. 2023 Jan 18;14(1):6-12
  34. ↑ Nazarieh M, Hakakzadeh A, Ghannadi S, Maleklou F, Tavakol Z, Alizadeh Z. Non-surgical management and post-surgical rehabilitation of carpal tunnel syndrome: An algorithmic approach and practical guideline. Asian Journal of Sports Medicine. 2020 Sep 30;11(3).
  35. ↑ 35.0 35.1 Liawrungrueang W, Wongsiri S, Sarasombath P. Endoscopic carpal surgery in carpal tunnel syndrome: A systematic review. SAGE Open Med. 2023 Jun 8;11:20503121231177111.
  36. ↑ Sheereen FJ, Sarkar B, Sahay P, Shaphe MA, Alghadir AH, Iqbal A, Ali T, Ahmad F. Comparison of Two Manual Therapy Programs, including Tendon Gliding Exercises as a Common Adjunct, While Managing the Participants with Chronic Carpal Tunnel Syndrome. Pain Research and Management. 2022 Jun 8;2022.
  37. ↑ Sheereen FJ, Sarkar B, Sahay P, Shaphe MA, Alghadir AH, Iqbal A, Ali T, Ahmad F. Comparison of Two Manual Therapy Programs, including Tendon Gliding Exercises as a Common Adjunct, While Managing the Participants with Chronic Carpal Tunnel Syndrome. Pain Research and Management. 2022 Jun 8;2022.
  38. ↑ Rehab My Patient. Finger Tendon Glide Exercise. Available from: https://www.youtube.com/watch?v=_myr1Pl0l4o [last accessed 20/06/2022]
  39. ↑ Rehab My Patient. Stiff finger exercise. Available from: https://www.youtube.com/watch?v=hvrD9FSzlik [last accessed 20/06/2022]
  40. ↑ Rehab My Patient. Finger pain exercise. Available from: https://www.youtube.com/watch?v=5qRb3ht3zsA[last accessed 20/06/2022]
  41. ↑ Rehab Mhttps://www.youtube.com/watch?v=BSyip8aUsqIy Patient. Thumb opposition proprioception. Available from: http://www.youtube.com/watch?v=dMH0bHeiRNg [last accessed 20/06/2022]
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