Review Question - QID 210265

A 14-year-old gymnast presents to your clinic for a second opinion. Over the past few months, she has complained of medial elbow pain with paresthesias over the dorsal and volar aspects of her small finger. She demonstrates some intrinsic atrophy on examination. When she flexes her elbow the ulnar nerve demonstrates subluxation over the medial epicondyle. She attempted a trial of nighttime splinting, activity modification, and anti-inflammatory medications without significant relief. Which of the following pre-operative variables is a good prognostic indicator following surgical intervention?