- X-Rays:
- isolated metacarpal views are not possible;
- 30 deg pronated lateral: for index and long metacarpals;
- 30 supinated lateral: for ring and little metacarpals;
- Non Operative Treatment:
- wrist is extended in 20 deg of extension, MP joint in 60-70 of flexion, & IP joints in extension;
- metacarpal and phalangeal frx will typically unite prior to radiographic evidence, which may take upto 5 months;
- metacarpal frx typically unite in 6 wks & phalangeal frx unite in 3 wks;
- references:
- Three Cast Techniques for the Treatment of Extra-Articular Metacarpal Fractures.
- Surgical Approaches:
- longitudinal extensile inicisions are used over dorsum of the hand;
- border metacarpals are approached thru longitudinal incisions between 2nd and thrid or fourth and fifth metacarpals;
- juncturae tendinum interconnecting the common extensor tendons can be split to enhance exposure (tag for later repair);
- Metacarpal Head Frx:
- often badly comminuted;
- consider a short period of splinting followed by early active motion;
- this may mold the articular surface by using the soft tissue sleeve;
- early motion will also prevent joint stiffness, but loos of motion is common after this type of fracture;