Hospital Vall d'Hebron 1 Universitat Autònoma de Barcelona 2, Cirugía Ortopédica y Traumatología, Passeig Vall d'Hebron 129, Barcelona 08035, Spain.
Foot Ankle Int. 2009 Dec;30(12):1207-11. doi: 10.3113/FAI.2009.1207.
Tendon transfers are often used in foot and ankle surgery. Different fixation devices and techniques have been described. The most recently developed ones are bone anchors and interference screws.
A biomechanical study was designed to compare tendon transfer fixation, using Corkscrew bone anchors 5 x 15.5 mm and Bio-interference screws (8 x 23 mm). Fifteen fresh cadaver specimens underwent both fixation techniques for split anterior tibial tendon transfer at the cuboid bone. All the specimens underwent standardized X-rays in order to evaluate mineral bone density using a standardized measurement system. All were tested until maximal load to failure.
The ultimate load to failure of the tendon secured to the cuboid using anchors was 103 N (SD, 52), compared with 150 N (SD, 68) for tendons secured to the bone with interference screws (p = 0.003). No difference was found between the techniques that could be related to bone density.
Interference screws provided greater strength than bone anchors.
This study demonstrated increased strength in securing bone to tendon in vitro for SPLATT tendon transfer with interference screws as compared to suture anchors.
肌腱转移常用于足踝外科。已经描述了不同的固定装置和技术。最近开发的是骨锚和干扰螺钉。
设计了一项生物力学研究，以比较使用 Corkscrew 骨锚（5 x 15.5 毫米）和 Bio-interference 螺钉（8 x 23 毫米）的肌腱转移固定。15 个新鲜的尸体标本在跗骨上进行了分裂前胫骨肌腱转移的两种固定技术。所有标本均进行了标准化 X 射线检查，以使用标准化测量系统评估骨矿物质密度。所有标本均测试至最大失效负载。
使用骨锚固定在跗骨上的肌腱的最终失效负载为 103 N（标准差 52），而使用干扰螺钉固定在骨上的肌腱的失效负载为 150 N（标准差 68）（p = 0.003）。两种技术之间没有发现与骨密度相关的差异。
干扰螺钉提供的强度大于骨锚。
与骨锚相比，这项研究表明，在体外固定 SPLATT 肌腱转移时，干扰螺钉比缝线锚钉具有更高的强度。
