Medial arch strain after lateral column lengthening: An in vitro study
Medial arch strain after lateral column lengthening: An in vitro study
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DOI：
10.1177/107110079902001208
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发表时间：
1999-12-01
影响因子：
2.7
通讯作者：
Kenneally, S
中科院分区：
文献类型：
--
作者：
Otis, JC;Deland, JT;Kenneally, S
胫骨后肌腱功能障碍伴进行性扁平足畸形与内侧弓韧带沿着断裂有关。外侧柱延长术正被单独使用或与其他手术联合使用，以期有助于恢复和维持足弓。本研究的主要目的是检查外侧柱延长术对内侧弓应变的影响，第二个目的是检查距下、距舟、双和三融合对内侧弓应变的影响。整个尸体足部在跖行位置时受到垂直载荷。使用液态金属位移计监测弹簧韧带长度。检查了两个结果：韧带长度和每单位施加载荷的韧带长度变化。外侧柱延长后韧带长度不变，距舟、双和三关节融合后韧带长度减少，与这些融合保护的韧带一致。模拟外侧柱延长后应用蟾蜍的每单位长度变化与完整足相当，这与韧带在负重期间保持功能且未过载一致。
Posterior tibial tendon dysfunction with concomitant progressive flatfoot deformity is associated with ligamentous failure along the medial arch. Lateral column lengthening is being used alone and in combination with other procedures with the expectation that it contributes to restoring and maintaining the arch. The primary objective of this study was to examine the effect of lateral column lengthening on medial arch strain, A secondary objective was to examine the effect of subtalar, talonavicular, double and triple fusions on medial arch strain, Whole cadaver feet were subjected to Vertical loads while in a plantigrade position. Spring ligament length was monitored using liquid metal displacement gauges. Two outcomes were examined: the length of the ligament and the change in length of the ligament per unit of applied load. Ligament length was unchanged after lateral column lengthening, Ligament length was decreased after talonavicular, double and triple arthrodeses, consistent with the ligament being protected by these fusions, The change in length per unit of applied toad after simulated lateral column lengthening was comparable to that for the intact foot, which is consistent with the ligament remaining functional during weightbearing and not being overloaded.