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Medial approach

Identification of the ulnar nerve

Identify the ulnar nerve proximally between the triceps and the medial intermuscular septum, in the groove posterior to the medial epicondyle and distally between two heads of the flexor carpi ulnaris.
Gently free and protect the ulnar nerve. If anterior transposition of the nerve becomes necessary, be careful to preserve the motor branch to the flexor carpi ulnaris.

It is essential that the OR report should clearly describe how the ulnar nerve has been protected, and the location of the nerve at the end of the operation.