Clin Orthop Relat Res 2019 02;477(2):424-431
D. Becker, N. Hammer, Anatomy Department, University of Otago, Dunedin, New Zealand F. A. Lopez-Marambio, Hamilton Hospital, Hamilton, New Zealand N. Hammer, Department of Orthopedic and Trauma Surgery, University of Leipzig, Germany Fraunhofer IWU, Dresden, Germany D. Kieser, Orthopaedics Department, Christchurch Public Hospital, Christchurch, New Zealand.
Background: The posterior interosseous nerve (PIN) is occasionally damaged during distal biceps tendon repair. But to our knowledge, no studies have examined the position of the PIN in relation to the bicipital tuberosity in full supination, which is the recommended position during single-incision distal biceps repair or reconstruction QUESTIONS/PURPOSES: (1) What is the anterior safe zone when exposing the anterior tuberosity with the arm in supination? (2) When drilling the radial tuberosity for bicortical button placement in full supination, how should the drill be angled to avoid PIN injury?
Methods: Fifteen adult cadaver elbows had the PIN dissected around the proximal radius. The position of the PIN was measured relative to the most ulnar aspect of the radius at three sites in full supination: at the bicipital tuberosity (bicipital tuberosity-PIN), 10 mm proximal to the bicipital tuberosity (bicipital tuberosity-proximal), and 10 mm distal to the bicipital tuberosity (bicipital tuberosity-distal). Read More