*9.6.1 Ulnar nerve*

The ulnar nerve arises from the medial cord of the brachial plexus and travels deep to the fascia in the upper portion of the arm. It becomes more superficial when it pierces the intramuscular septum 8 cm superior to the medial epicondyle at the arcade of Struthers and travels medial to the triceps before passing through the cubital tunnel posterior to the medial epicondyle. Surgical incisions must be placed away from the ulnar nerve and placed either on the radial side of the elbow or anterior to the medial epicondyle if more ulnar-sided access is necessary. The path of the ulnar nerve at the elbow is marked and liposuction or energy application is avoided in this critical region.
