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首页> 外文期刊>Orthopaedic Journal of Sports Medicine >Influence of a posteromedial meniscocpsular injury on the tibiofemoral joint laxity: A cadaveric study
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Influence of a posteromedial meniscocpsular injury on the tibiofemoral joint laxity: A cadaveric study

机译：后剖视细胞囊损伤对胫骨膜关节松弛的影响：尸体研究

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Objectives Up to 61% of meniscal tears can be associated with ACL ruptures. These lesions lead to anterior and rotary laxity increase. Posterior peripheral meniscocaspsular tear of medial meniscus is also called ramp lesion. Prevalence of this kind of lesion is 9% to 17% in adults and up to 23% in pediatric popultation. The aim of this study was to determined anterior laxity of cadaveric ACL deficient knees. Hypothesis was to find a correlation between size of ramp lesion and laxity in order to determine a threshold of size for which reparation is mandatory. Methods Twelve fresh cadaveric knees were explored for the study. Two knees was excluded because they presented major lesions of osteoarthritis and ACL and meniscal tears. 10 remaining knees were from 3 males and 2 females. Mean age at time of death was 86 years old. Dynamic laximetry with GNRB device was made in several conditions: Knee without any intervention, full of water knee, after ACL rupture and after ACL rupture and increasing sizes of ramp lesions up to 30 mm. Anteroposterior laxity was measured at each time with 3 kind of loading charge (134 N, 200 N and 250 N). Results After ACL section only, tibiofemoral joint anterior laxity was significatively increased. Mean increasing was 156% whatever is the loading force. No statistical laxity difference was find between knees with ACL tears only and knees with ACL and meniscal tears for each size of ramp lesions. Increasing size of ramp lesion was not correlated to increasing of laxity. We could not be able to determine a threshold for ramp lesion reparation. Conclusion: GNRB? is a valid device of knee laxity measure, escpecially for ACL deficient knee. Despite use of this performing tool, we can’t confirm our hypothesis. Stephen et al in 2015 have shown, with cadaveric study, significant increase of anterior tibial translation and rotary laxity in knees with extended ramp lesions. There is no data about a ramp lesion size threshold with clinical relevance. GNRB gives reliable measures of laxity in ACL deficient knees. We could not find a threshold size of ramp lesion which increase tibial anterior laxity. Cadaveric rotary laxity has to be also studied to find this threshold.
机译：目标高达61％的半月岩撕裂可能与ACL破裂相关。这些病变导致前部和旋转松弛。内侧椎间盘突出的后周半膜状泪液也被称为斜坡病变。这种病变的患病率为成人的9％至17％，儿科百姓高达23％。本研究的目的是确定尸体ACL缺乏膝盖的前松弛。假设是在斜坡病变和松弛程度之间找到相关性，以便确定强制性的尺寸的阈值。方法探索了12种新鲜的尸体膝关节。由于它们呈现出骨关节炎和ACL和半月岩的主要病变而被排除在外。 10个膝盖来自3名男性和2名女性。死亡时代的平均年龄为86岁。用GNRB器件的动态韧带仪在几种条件下制造：膝盖没有任何干预，充满水膝部，ACL破裂后和ACL破裂后的斜坡损伤尺寸高达30毫米。每次用3种装载电荷（134n，200 n和250n）每次测量前后松弛。结果仅在ACL部分后，胫脂型接头前泻液显着增加。无论装载力如何，平均增加为156％。在膝盖之间没有发现统计松弛差异，仅膝盖撕裂，膝盖和半月形撕裂的斜坡病变。增加斜坡病变的尺寸与增加的松弛率无关。我们无法确定斜坡病变赔偿的阈值。结论：GNRB？是膝关节尺寸的有效设备，用于ACL缺乏膝关节。尽管使用此表现工具，我们无法确认我们的假设。 Stephen等人于2015年显示，具有尸体研究，延长斜坡病变的膝盖前胫骨平移和旋转松弛的显着增加。没有关于斜坡病变尺寸阈值的数据，具有临床相关性。 GNRB在ACL缺乏膝盖中提供了可靠的松弛措施。我们找不到斜坡病变的阈值大小，这增加了胫骨前松弛。还必须研究尸体旋转松弛以找到该阈值。

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