Cross section of a flexor tendon of right digit with placement of core sutures (double-loop 6-strand repair): (1) placement of first loop suture from proximal to distal in medial volar quadrant; (2) second loop suture from distal to proximal in lateral volar quadrant; (3) rerouting of both loop sutures to meet at repair site in midportion of tendon. (Redrawn from Gill RS, Lim BH, Shatford RA, et al: A comparative analysis of the six-strand double-loop flexor tendon repair and three other techniques: a human cadaveric study, J Hand Surg 24:1315–1322, 1999.) SEE TECHNIQUE 66.5.