de Quervain's Syndrome
from 3PointProducts.com




The illustration shows the inflammed tendon sheath coverins and the Thenar Snuffbox of De Quervain’s Tenosynovitis


DeQuervain’s Tenosynovitis (D-quare-vanes T-no-sigh-no-vie-tis) is an inflammation of the synovial tissue that covers the tendons that straighten and pull the thumb away from the hand (“hitchhiker” position). The tendons involved are the ones along the thumb side of the wrist that are prominent when the thumb is extended away from the hand. The indentation formed between these two tendons is known as the Thenar Snuffbox. Inflammation of the tendons or of the tissue that surrounds them causes swelling and restricts the tendons' ability to glide back and forth to move the thumb.

The most common cause of DeQuervain’s Tenosynovitis is overuse from lifting or performing side to side motions with the hand. Sometimes the condition develops for no known reason. Treatment is the same if the cause is known or not.


Symptoms
Pain along the thumb side of the wrist is the most common symptom of deQuervain’s tenosynovitis. The pain may radiate down to the end of the thumb or up along the thumb side of the forearm. Pain is most commonly felt when reaching the thumb across the palm or when flexing (bending) the wrist and turning it towards the little finger (ulnar deviation). Pain may also be felt when pressure is applied over the tendons that run along the outside of the thumb and wrist.

 

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