A Biomechanical Comparison of 3 Loop Suture Materials in a 6-Strand Flexor Tendon Repair Technique

Gan AWT, Neo PY, He M, et al (Singapore General Hosp; Natl Univ Hosp, Singapore) J Hand Surg 37A:1830-1834, 2012^§

Abstract

Purpose

The braided polyblend (FiberWire) suture is recognized for its superiority in tensile strength in flexor tendon repair. The purpose of this study was to compare the biomechanical performance of 3 loop-suture materials used in a locking 6-strand flexor tendon repair configuration: braided polyblend (FiberLoop 4-0), cable nylon (Supramid Extra II 4-0), and braided polyester (Tendo-Loop 4-0). We hypothesized that, using this technique, the braided polyblend suture would give superior tensile strength compared with the other 2 suture materials.

Methods

We divided 30 fresh porcine flexor tendons transversely and repaired each with 1 of the 3 suture materials using a modified Lim-Tsai 6-strand suture technique. We loaded the repaired tendons to failure using a materials testing machine and collected data on the mechanism of failure, ultimate tensile strength, gap strength, and stiffness.

Results

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