The effect of length on the structural properties of an achilles tendon graft as used in posterior cruciate ligament reconstruction
The effect of length on the structural properties of an achilles tendon graft as used in posterior cruciate ligament reconstruction
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DOI：
10.1177/0363546503261739
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发表时间：
2004-06-01
影响因子：
4.8
通讯作者：
Li, GA
中科院分区：
文献类型：
--
作者：
DeFrate, LE;van der Ven, A;Li, GA
背景：后交叉韧带重建的临床结果是多种多样的。目前还没有研究发现接枝长度对接枝结构性能的影响。假设：移植物长度显著影响后交叉韧带移植物的结构特性。研究设计：实验室对照研究。方法：8个跟腱移植物在400 N的拉伸载荷下进行3种不同长度的测试：长（75 mm），中（48 mm）和短（34 mm）。这3个长度分别代表隧道中固定、嵌体固定和韧带插入点附近固定。结果：将移植物由长至中、由中至短分别缩短，增加了约25%的刚度。长嫁接和中嫁接的位移分别明显大于中嫁接和短嫁接。结论：植骨的有效长度由植骨的固定位置决定，是后交叉韧带重建的一个重要变量。
Background: The clinical outcomes of posterior cruciate ligament reconstruction are varied. No previous studies have investigated the effect of graft length on the structural properties of the graft.Hypothesis: Graft length significantly affects the structural properties of posterior cruciate ligament grafts.Study Design: Controlled laboratory study.Methods: Eight Achilles tendon grafts were tested under tensile loads up to 400 N at 3 different lengths: long (75 mm), medium (48 mm), and short (34 mm). These 3 lengths represent midtunnel fixation, inlay fixation, and fixation near the ligament insertions.Results: Shortening the graft from both long to medium and from medium to short increased the stiffness by approximately 25%. Long and medium grafts displaced significantly more than medium and short grafts, respectively.Conclusion: The effective length of a graft, which is determined by where it is fixed, should be considered an important variable in posterior cruciate ligament reconstruction.