Wrist Pain (unilateral) Anatomy
To better understand wrist pain, 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 carpal bones include the scaphoid, lunate, trapezoid, trapezium, hamate, capitate, triquetrum, and pisiform. The forearm bones include the radius and ulna. Ligaments hold the bones together during movement.
Structures of the wrist include:
- Helliwell PS. Regional musculoskeletal pain. The elbow, forearm, wrist and hand. Baillieres Best Pract Res Clin Rheumatol. 1999 Jun;13(2):311-28. 
- Nagle DJ. Evaluation of chronic wrist pain. J Am Acad Orthop Surg. 2000 Jan-Feb;8(1):45-55. 
- Palmer KT. Regional musculoskeletal conditions: pain in the forearm, wrist and hand. Best Pract Res Clin Rheumatol. 2003 Feb;17(1):113-35. 
- Shin AY, Deitch MA, Sachar K, Boyer MI. Ulnar-sided wrist pain: diagnosis and treatment. Instr Course Lect. 2005;54:115-28.