De Quervain's Tenosynovitis 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:
- Ilyas A, Ast M, Schaffer AA, Thoder J. De quervain tenosynovitis of the wrist. J Am Acad Orthop Surg. 2007 Dec;15(12):757-64. 
- Pascarelli EF, Hsu YP. Understanding work-related upper extremity disorders: clinical findings in 485 computer users, musicians, and others. J Occup Rehabil. 2001 Mar;11(1):1-21. 
- Rumball JS, Lebrun CM, Di Ciacca SR, Orlando K. Rowing injuries. Sports Med. 2005;35(6):537-55. 
- Schoffl VR, Schoffl I. Finger pain in rock climbers: reaching the right differential diagnosis and therapy. J Sports Med Phys Fitness. 2007 Mar;47(1):70-8.