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Carpal Tunnel Syndrome

Median Nerve Compression at the Wrist Causing Hand Numbness, Tingling, and Weakness

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Nöroloji department. Book Appointment →

What is Carpal Tunnel Syndrome?

Carpal tunnel syndrome (CTS) is the most common entrapment neuropathy, affecting 3–6% of adults, with female predominance (female-to-male ratio approximately 3:1) and peak incidence in middle age (45–60 years).

Pathophysiology: median nerve compression at the wrist within the carpal tunnel (formed by carpal bones and transverse carpal ligament), leading to ischemia and demyelination of nerve fibers.

Etiology multifactorial: idiopathic in most cases, but associated with repetitive hand use, pregnancy, obesity, diabetes mellitus, hypothyroidism, rheumatoid arthritis, amyloidosis, acromegaly, hemodialysis.

Severity classification: mild (sensory symptoms, no motor involvement), moderate (sensory loss with thenar weakness), severe (significant thenar atrophy, fixed sensory loss, persistent pain).

Symptoms

Numbness, tingling, and burning in the median nerve distribution: thumb, index, middle, and lateral half of ring finger
Nocturnal symptoms typical: awakening with hand numbness and tingling, often relieved by shaking hand ('flick sign')
Pain in hand and wrist, often radiating up the forearm
Thenar muscle weakness in advanced cases: difficulty with opposition of thumb, fine motor tasks, gripping objects, opening jars
Atrophy of thenar muscles (thenar eminence flattening) in chronic severe cases
Symptoms exacerbated by repetitive wrist movements, holding objects (phone, steering wheel), driving
Bilateral involvement common, often asymmetric with dominant hand more affected
Phalen's sign (wrist flexion reproduces symptoms within 60 seconds), Tinel's sign (tapping over median nerve produces tingling), carpal compression test

Risk Factors

Female sex (3:1 female-to-male), age 45–60 years
Repetitive hand and wrist use: keyboard typing, manual labor, vibrating tools, factory work
Pregnancy (transient CTS in second-third trimester due to fluid retention)
Obesity (BMI >30)
Diabetes mellitus and prediabetes
Hypothyroidism
Rheumatoid arthritis and other inflammatory arthritides
Amyloidosis (especially in hemodialysis patients)
Acromegaly and pituitary disorders
Wrist trauma or fracture
Genetic predisposition: family history of CTS

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Persistent or recurrent hand numbness, tingling, or pain affecting daily activities or sleep
  • Symptoms not improving with conservative measures (splinting, ergonomic modifications) within 4–6 weeks
  • Thenar muscle weakness or atrophy
  • Bilateral severe symptoms or rapid progression
  • Underlying conditions warranting evaluation (suspected diabetes, thyroid disease, rheumatoid arthritis)
  • Postoperative concerns: persistent or recurrent symptoms after carpal tunnel release

Treatment Methods

01
Diagnostic evaluation: detailed history and physical examination including provocative tests (Phalen's, Tinel's, carpal compression), assessment of thenar strength and atrophy, sensory evaluation
02
Electrodiagnostic studies (NCS/EMG): gold standard for confirmation; demonstrates prolonged distal motor and sensory latencies of the median nerve at the wrist; severity grading guides management
03
Imaging: ultrasonography of the carpal tunnel can support diagnosis (median nerve cross-sectional area >10 mm²) and identify space-occupying lesions; MRI for atypical cases or surgical planning
04
Laboratory testing for underlying causes: HbA1c, TSH, rheumatoid factor, anti-CCP, urinalysis, serum protein electrophoresis when indicated
05
Conservative management for mild-moderate CTS: nocturnal wrist splint in neutral position (effective in 50–70% with consistent use), activity modification, ergonomic adjustments, NSAIDs for symptomatic relief
06
Corticosteroid injection: 40 mg methylprednisolone or triamcinolone into the carpal tunnel; effective short-term (1–6 months) for symptom relief but recurrence common; useful for diagnostic confirmation and surgical bridging
07
Oral corticosteroids: short course of prednisolone (20 mg/day for 2 weeks) provides modest temporary improvement
08
Other conservative options: ultrasound therapy, yoga, magnet therapy, vitamin B6 (limited evidence)
09
Carpal tunnel release surgery: indicated for severe CTS, failure of conservative therapy, progressive thenar atrophy, electrodiagnostically severe disease
10
Open carpal tunnel release: traditional approach with longitudinal incision in palm; effective with high success rate (90%) but longer recovery
11
Endoscopic carpal tunnel release: minimally invasive technique through small wrist or palm portals; faster return to work and activities, comparable long-term outcomes; learning curve
12
Postoperative care: short-term immobilization, hand elevation, gradual return to activities (light activities at 1 week, normal activities at 4–6 weeks), occupational therapy if needed
13
Surgical complications (rare): incomplete release, neurovascular injury, persistent or recurrent symptoms, pillar pain, scar tenderness, complex regional pain syndrome
14
Pregnancy-associated CTS: usually resolves within months postpartum; conservative management with splinting; surgery rarely needed
15
Long-term follow-up: clinical assessment at 1–2 weeks for wound, 3 months for symptom and function, 12 months for late outcomes; address underlying causes

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.