兔肌腱转移或移植中环状肌腱与端对端编织法的比较。

Comparison of loop-tendon versus end-weave methods for tendon transfer or grafting in rabbits.

作者信息

Jeon Suk Ha, Chung Moon Sang, Baek Goo Hyun, Lee Young Ho, Kim Sae Hoon, Gong Hyun Sik

机构信息

Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul, Korea.

出版信息

J Hand Surg Am. 2009 Jul-Aug;34(6):1074-9. doi: 10.1016/j.jhsa.2009.02.025.

DOI:10.1016/j.jhsa.2009.02.025

PMID:19643292

Abstract

PURPOSE

The loop-tendon method for the stabilization of tendon transfers or grafts has been demonstrated previously to have greater initial tensile strength than that of the end-weave method. To our knowledge, a comparison of the mechanical strengths of these methods over the early postoperative period has not been made. The purpose of this study was to compare the mechanical strengths of loop-tendon and end-weave methods of repair during the early postoperative period in rabbit hind limb tendons.

METHODS

In bilateral hind limbs of 30 New Zealand white rabbits of an average weight of 3.5 kg, a distally cut gastrocnemius Achilles' tendon and a proximally cut flexor digitorum superficialis tendon were connected to each other by using the loop-tendon method with 5 stitches in one limb and a 1-pass end-weave method in the contralateral limb. Postoperatively, all rabbits were immobilized by a short-leg cylinder cast. Six rabbits were killed at each of the following time points: immediately after surgery (baseline) and at 1, 2, 3, and 4 weeks postoperatively. Repaired tendons were harvested and were loaded to failure in a tensile load-testing machine to record the ultimate strength and to calculate the absorbed energy.

RESULTS

Ultimate tensile loads were significantly higher in the loop-tendon method group than in the end-weave group from baseline to 3 weeks postoperatively, but there was no difference at 4 weeks postoperatively. During the postoperative period, the ultimate tensile load and absorbed energy decreased over the first 2 weeks postoperatively and then increased to reach baseline strengths at 3 weeks postoperatively in both groups.

CONCLUSIONS

The loop-tendon method provided greater strength than that of the end-weave method during the early postoperative period in rabbit tendons. The loop-tendon method may provide greater surgical repair strength during the early postoperative rehabilitation period than the end-weave method.

摘要

目的

先前已证明，用于稳定肌腱转移或移植的环腱法比端对端编织法具有更高的初始拉伸强度。据我们所知，尚未对这些方法在术后早期的机械强度进行比较。本研究的目的是比较兔后肢肌腱在术后早期采用环腱法和端对端编织法修复后的机械强度。

方法

在30只平均体重3.5千克的新西兰白兔的双侧后肢中，一侧后肢将远端切断的腓肠肌跟腱与近端切断的趾浅屈肌腱用环腱法连接，缝5针；对侧后肢采用单通道端对端编织法连接。术后，所有兔子均用短腿管型石膏固定。在以下每个时间点处死6只兔子：术后即刻（基线）以及术后1、2、3和4周。取出修复后的肌腱，在拉伸载荷试验机上加载直至断裂，记录极限强度并计算吸收能量。