Fig. 3.

Lateral perspective of the dorsal aspect of a right injected fresh frozen forearm. The flap dissected is the posterior interosseous flap. Note that the posterior interosseous vessel is not visible; however, the septocutaneous (orange arrows) and musculocutaneous (yellow arrows) supplying the extensor carpi ulnaris (ECU) can be easily visualised and traced back to the major vessel. Indicators of medial, proximal, and distal aspects of the limb have been included for orientation