Review Question - QID 211743

A 56-year-old man is assaulted while minding his own business. In the process of defending himself, the robber lacerates the medial aspect of the man's upper arm. At the hospital, hand surgery is consulted to address his wound, and a complete ulnar nerve laceration is identified. Although the man's ulnar nerve is directly repaired, nerve function never returns. At a later date, the hand surgeon discusses transferring the anterior interosseous nerve (AIN) to the deep ulnar motor fascicle in a supercharge end-to-side (SETS) procedure. Which of the following is a contraindication to this transfer?