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Carpal Tunnel Syndrome

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Definition of Carpal Tunnel Syndrome A condition where the passageway

formed by the bones in the wrist becomes constricted by any number of factors, creating compression of the median nerve where it passes through the tunnel. It results in pain, numbness, and/or loss of function.

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Anatomy

Floor: carpal bones Roof: flexor retinaculum Inside: 8 flexor tendons

and the medial nerve

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Motions of the Wrist

Ulnar/radial deviation Flexion/extension Supination/pronation

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Causes of C.T.S.

Repetitive motion Vibration Force Poor ergonomics/sustained

postures Microtrauma

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Acute C.T.S.

Median nerve becomes entrapped in the carpal tunnel

Usually no underlying disease Occurs with pregnancy, rheumatoid

arthritis Anything that causes reduced size of

the carpal tunnel

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Symptoms

Pain Numbness along median nerve

distribution Weakness Muscle atrophy Often worse at night Radiation of pain

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Diagnosis

Consistent history Mild swelling and muscle atrophy Positive Tinel’s sign

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Treatment

Limit causative trauma/tasks Splinting NSAID’s Steroid injections Surgery

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Recent Changes

Technology Less variety in work positions

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Preventive Measures

Equipment Work method Layout

Argo

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Preventive Measures & Ergonomics Keep wrists straight; wrist rests Adjust chair, desk height Regular breaks Body joints centered in R.O.M. Upper arms vertical Line of sight with monitor Two or more comfortable positions

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Injury Prevention

Adjust your Work Stations to suit you Be aware of early signs Position materials for correct posture Eliminate glare Maintain good nutrition Take regular breaks

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When Early Symptoms Show

Seek medical help Revise work habits to limit stress Learn to relax - stretch to relieve tension Early Intervention Prevents

Permanent Injury