Thumb Tendinitis Anatomy
To better understand Dequervain's tenosynovitis, it helps to understand the anatomy of the wrist joint.
The wrist is made of 10 bones: 8 carpal bones and 2 forearm bones. The wrist or carpal bones are the: scaphoid, lunate, trapezoid, trapezium, hamate, capitate, triquetrum, and pisiform. The forearm bones are the radius and ulna. Ligaments attach between these bones, and allow the wrist to move, yet remain stable.
Anatomy of the wrist:
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