Valgus medial collateral ligament rupture causes concomitant loading and damage of the anterior cruciate ligament.
Valgus medial collateral ligament rupture causes concomitant loading and damage of the anterior cruciate ligament.
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外翻内侧副韧带断裂导致前十字韧带的伴随负载和损伤。
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
D. Adams
中科院分区：
文献类型：
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作者：
A. Mazzocca;C. Nissen;M. Geary;D. Adams
本研究检验了一种假设，即施加必要的外翻力以造成完全的内侧副韧带（MCL）损伤会导致前交叉韧带（ACL）损伤。使用12个尸体膝关节来测量在足以引起III级MCL损伤的膝关节外翻载荷下ACL的伴随载荷和损伤。将位移传感器放置在ACL和后斜韧带的前内侧束上，以监测MCL损伤过程中的拉伸应变。对屈曲30度的膝关节施加外翻力矩，使关节外翻旋转超过MCL断裂。在外翻加载和MCL损伤后，对股骨-ACL-胫骨样本进行测试，直至失败，以比较ACL与未损伤对照样本的机械完整性。MCL断裂膝关节的平均ACL强度（1250 +/- 90 N）在统计学上低于（P <或= .05）对照膝关节（2110 +/- 50 N）。应变测量结果显示，在外翻加载过程中伴随后斜韧带应变，而ACL应变大幅增加后MCL断裂。这些数据表明，ACL可以在孤立的III级MCL损伤中受损。
This study tested the hypothesis that application of a valgus force necessary to create a complete medial collateral ligament (MCL) injury causes damage to the anterior cruciate ligament (ACL). Twelve cadaveric knees were used to measure concomitant loading and damage to the ACL in valgus knee loading sufficient to cause a grade III MCL injury. Displacement sensors were placed on the anteromedial bundle of the ACL and posterior oblique ligament to monitor tensile strain during creation of the MCL injury. A valgus moment was applied to knees flexed at 30 degrees, displacing the joint into valgus rotation beyond MCL rupture. Following valgus loading and MCL injury, femur-ACL-tibia specimens were tested to failure to compare ACL mechanical integrity to noninjured control specimens. Average ACL strength in MCL ruptured knees (1250 +/- 90 N) was statistically lower (P < or = .05) than that for control knees (2110 +/- 50 N). Strain measurements exhibited concomitant posterior oblique ligament strain during valgus loading, whereas ACL strain increased substantially only after MCL rupture. These data indicate that the ACL can be compromised in isolated grade III MCL injuries.