• Injury · Nov 2011

    A biomechanical study of flexor tendon repair in zone II: comparing a combined grasping and locking core suture technique to its grasping and locking components.

    • M M Al-Qattan, M A Al-Rakan, and T S Al-Hassan.
    • Division of Plastic Surgery, King Saud University, Riyadh, Saudi Arabia. moqattan@hotmail.com
    • Injury. 2011 Nov 1;42(11):1300-2.

    IntroductionAll previous experimental and clinical repairs of flexor tendons in zone II have used either a grasping or a locking technique. In this article, a combined (grasping and locking) repair was compared biomechanically to its grasping and locking components.MethodsUsing fresh flexor profundus adult sheep tendons, three techniques of tendon repair were tested biomechanically: the 'three figure-of-eight sutures' (a six-strand grasping technique), the 'locked cruciate repair' (a four-strand locked technique) and the 'combined technique' (a 10-strand repair using both the figure-of-eight and cruciate sutures). All repairs were tested to single-cycle tensile failure using a computerised tensometer. For each repair, the 2-mm gap force and the ultimate breaking (failure) force were recorded.ResultsBiomechanically, the combined repair was found to be the strongest regarding both gap and failure (P<0.025; two-tailed by the Mann-Whitney test).ConclusionThe combined 10-strand repair is stronger biomechanically than its grasping and locking components.Copyright © 2011 Elsevier Ltd. All rights reserved.

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