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. 2007 Mar;32(3):367-72.
doi: 10.1016/j.jhsa.2006.12.007.

A loop-tendon suture for tendon transfer or graft surgery

Sae Hoon Kim  1 , Moon Sang Chung, Goo Hyun Baek, Young Ho Lee, Sanglim Lee, Hyun Sik Gong
Affiliations

A loop-tendon suture for tendon transfer or graft surgery

Sae Hoon Kim et al. J Hand Surg Am. 2007 Mar.

Abstract

Purpose: We present a loop-tendon suture technique that was designed for easy tension adjustment and early postoperative rehabilitation in tendon transfer or graft surgeries. This study tested the biomechanical strength of the loop-tendon suture by using chicken flexor tendons and we report the preliminary clinical results.

Methods: We tested the ultimate strength of the loop-tendon suture against the end-weave suture technique in chicken flexor tendons. Forty flexor digitorum longus tendons of chickens were divided into 2 groups according to the suture technique, loop-tendon suture and end-weave suture groups, and then were subjected to linear loading in a tensile load testing machine. From 2000 to 2002 we performed 27 tendon transfer surgeries clinically, including 4 interpositional tendon grafts in 15 patients, using this technique followed by immediate passive motion exercise after surgery. The mean follow-up time was 20 months.

Results: The ultimate tensile load of chicken flexor tendons was 31 +/- 6 N for the loop-tendon suture group and 23 +/- 8 N for the end-weave suture group, and the difference was statistically significant. Clinically, 6 patients with an extensor indicis proprius to an extensor pollicis longus transfer showed more than good results in the Geldmacher scheme. Three patients with an extensor indicis proprius to a central tendon transfer achieved proximal interphalangeal extension of less than 15 degrees of extension lag. One patient with a flexor digitorum profundus reconstruction obtained total active motion of 210 degrees. The 5 patients with triple transfers for radial nerve palsy showed more than neutral extension of the wrist and metacarpal joint. There were no tendon ruptures.

Conclusions: The loop-tendon suture method has greater strength than the conventional end-weave technique, and can be used for secondary tendon reconstruction surgery with favorable clinical outcomes.

Type of study/level of evidence: Therapeutic IV.

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