Carpal Tunnel Facts

Carpal Tunnel Syndrome (CTS) is the most notorious of all computer-related repetitive strain injuries. It occurs when the median nerve, which runs from your forearm into the palm of your hand, becomes pressed or squeezed at the wrist. The carpal tunnel—a narrow, rigid passageway of ligament and bones at the base of the hand—houses this nerve alongside the tendons that bend your fingers.

Understanding the Mechanism

When you repeatedly bend your wrist (especially in extension, like when gripping a flat mouse while resting your palm on a desk), the tendons inside the tunnel become inflamed. Because the tunnel is rigid, the swelling has nowhere to go, so it compresses the softest tissue available: the median nerve.

Symptoms and Identification

CTS rarely happens overnight. It begins as a vague ache in the wrist that progresses to numbness, tingling, or burning in the thumb, index, and middle fingers. A classic sign is waking up in the middle of the night with the urge to "shake out" your hand. If left untreated, it can lead to permanent muscle atrophy at the base of the thumb and a severe loss of grip strength.

Prevention and Management

• Avoid Plantar Flexion: Never rest the soft underside of your wrist directly on the hard edge of a desk. Use a palm rest (not a wrist rest) to support the bony heel of your hand.
• Neutral Deviation: Ensure your mouse and keyboard allow your hands to align straight with your forearms. A vertical mouse is highly effective here as it naturally discourages extreme wrist extension.

FAQ

Is surgery the only option? No. Early intervention through splinting at night, ergonomic workstation redesign, and specific tendon-gliding exercises can often resolve symptoms without surgical intervention.