Wrist denervation. A, Incision. B, Removal of 1-cm section of posterior interosseous nerve. C, Removal of 1-cm section of anterior interosseous nerve. AIA, anterior interosseous artery; AIAp, posterior division of the anterior interosseous artery; AIN, anterior interosseous nerve; DRUJ, distal radioulnar joint; IOM, interosseous membrane; PIN, posterior interosseous nerve, PQ, pronator quadratus. (Redrawn from Hofmeister EP, Moran SL, Shin AY: Anterior and posterior interosseous neurectomy for the treatment of chronic dynamic instability of the wrist, Hand 1:63, 2006.) SEE TECHNIQUE 69.19.