Carpal Tunnel Syndrome vs Cervical Radiculopathy: Differential Diagnosis, Double Crush Syndrome & Median Nerve Gliding

1. The Dilemma of Numb, Tingling Hands

Hand numbness, nocturnal tingling ("pins and needles"), and dropping objects are among the most common complaints of modern IT professionals and desk workers in Hyderabad. However, treating the wrist when the true culprit is the neck—or vice versa—leads to months of failed treatment and unnecessary surgeries.

2. Carpal Tunnel Anatomy vs. Cervical Nerve Roots

The Carpal Tunnel is a rigid fibro-osseous canal on the palmar side of the wrist bounded by carpal bones on three sides and the unyielding Transverse Carpal Ligament (Flexor Retinaculum) on top. Nine flexor tendons and the solitary Median Nerve pass through this narrow space.

When repetitive keyboard typing, pregnancy fluid retention, or wrist flexion elevates tunnel pressure above 30 mmHg, capillary blood flow to the median nerve is choked off (ischemic neuropraxia).

3. Clinical Differential Diagnostic Table

Clinical Feature	Carpal Tunnel Syndrome (CTS)	Cervical Radiculopathy (C6/C7)
Pain Distribution	Thumb, index, middle, half of ring finger; spares palm.	Radiates from neck/shoulder blade down entire arm.
Nocturnal Symptoms	Common; relieved by shaking hands ("Flick Sign").	Worsened by neck positioning and pillow height.
Key Orthopedic Tests	Phalen's (+), Tinel's at wrist (+), Durkan's (+).	Spurling's (+), Bakody's (+), ULTT (+).
Muscle Wasting	Thenar eminence atrophy (abductor pollicis brevis).	Biceps, triceps, or wrist extensor weakness.

4. The 'Double Crush' Phenomenon

First described by Upton and McComas, Double Crush Syndrome occurs when minor compression of a nerve root at the neck (C6/C7) impairs axoplasmic transport, making the distal median nerve at the wrist exceptionally vulnerable to secondary compression. Treating both sites simultaneously is required for complete resolution.

5. Conservative Physiotherapy Management Protocol

• Neutral Wrist Splinting: Wearing a rigid wrist brace strictly in 0-5 degrees of neutral extension during sleep keeps carpal tunnel pressure at its absolute lowest baseline.
• Median Nerve Slider-Tensioner Glides: Specific sequential movements of the neck, shoulder, elbow, and fingers that slide the median nerve smoothly through the carpal tunnel without creating traction spikes.
• Transverse Carpal Ligament Myofascial Release: Gentle hands-on transverse spreading to restore palmar flexibility.
• Postural Ergonomic Audit: Adjusting chair armrests and keyboard angles to eliminate prolonged wrist extension.

Athletlance provides dedicated carpal tunnel and cervical nerve assessments across Hitech City, Gachibowli, Miyapur, Kondapur, and greater Hyderabad.