Common Injuries and Treatments
The wrist joint is made up of the ends of the forearm bones (radius on the thumb side, ulna on the pinky side) and the two rows of wrist (carpal) bones. The 8 small carpal bones in the wrist bridge the radius and ulna to the finger bones (metacarpals). Along with 17 muscles in the palm of your hand, 18 muscles in your forearm that move the hand, wrist and fingers, and numerous ligaments, the wrist is a very dynamic area responsible for fine, precision movements (like buttoning a shirt) and also gross, strong movements (like gripping a handle to open a door).
Movements at the wrist are in 3 planes:
- Bending the hand toward the face (flexion) and away from the face (extension)
- Rotating the hand to palm up (supination) and rotating the hand to palm down (pronation)
- Tilting the wrist so the thumb goes toward the forearm bone on the thumb side (radial deviation) and tilting the wrist so the pinky goes toward the forearm bone on the pinky side (ulnar deviation).