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Dorsal approach to metacarpals

The dorsal aspect of the second metacarpal can be approached easily, as the two extensor tendons of the index finger ...

Surgical anatomy

The extensor tendons of the 3rd and 4th fingers run dorsally directly over the metacarpals. The extensor tendons of the index and little fingers converge slightly from their metacarpal axes towards the center of the wrist joint.
Be aware of the intertendinous connections, which are located over the distal thirds of the metacarpals.
The sensory nerve branches and longitudinal veins must be protected.