Figure 10-1. Horizontal section through the middle of the forearm. In A, the nerves and vessels are identified. B shows the flexor muscles (supplied by the ulnar but mainly by the median nerve) anteriorly and the extensors (supplied by the radial and posterior interosseous nerves) posteriorly. The individual muscles are not shown. Note that the flexors and extensors are separated by the subcutaneous posterior border of the ulna. Click for high resolution image.

Jump to: