(b) Restoration of alignment at the first carpometacarpal joint is seen on post reduction ... demonstrates fractures of the second, third, and fourth metacarpal bones, the proximal phalanges ...

This bone is part of the carpometacarpal (CMC) joint, which connects the trapezium to the metacarpal of the thumb. CMC joint anthroplasty helps reduce pain and makes it easier to grip and pinch ...

Thus, the motion in one joint usually requires fixation ... hand and across and in front of the radial third of the palm. In addition the first metacarpal bone moves ulnarward, swinging in that ...