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Medial approach

Identification of the ulnar nerve

The ulnar nerve is identified proximally between the triceps muscle and the medial intermuscular septum, in the groove posterior to the medial epicondyle and distally between two heads of the flexor carpi ulnaris.

The ulnar nerve is gently freed and protected. If anterior transposition of the nerve becomes necessary, care must be taken to preserve the motor branch to the flexor carpi ulnaris.