Postoperative time dependent tibiofemoral articular cartilage contact kinematics during step-up after ACL reconstruction
Postoperative time dependent tibiofemoral articular cartilage contact kinematics during step-up after ACL reconstruction
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DOI：
10.1016/j.jbiomech.2016.09.022
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发表时间：
2016-10-03
影响因子：
2.4
通讯作者：
Li, Guoan
中科院分区：
文献类型：
--
作者：
Lin, Lin;Li, Jing-Sheng;Li, Guoan
本研究对10例单侧前交叉韧带（ACL）损伤患者在重建前、后6个月和36个月时胫股软骨的接触位置进行了研究。使用磁共振建模和双透视成像技术分析了步进运动。术前（即ACL缺陷和健康的对侧）和术后软骨接触位置在6个月和36个月进行了分析。相似的模式，在步进运动过程中的软骨接触位置的术前和术后膝关节状态相比，术前健康的对侧。在步进运动结束时，与术前健康对侧（p=0.02）和术后6个月膝关节状态（p=0.01）相比，术后36个月的内侧接触位置更靠前。ACL重建后36个月时膝关节与健侧关节软骨接触位置的变化与术后6个月时的变化密切相关，本研究表明ACL重建后膝关节胫股软骨接触位置随时间发生变化，这意味着ACL重建后36个月内膝关节有一个持续的恢复过程。ACL重建后的短期（6个月）和长期（36个月）接触运动学之间可能存在相关性。未来的研究需要探讨ACL重建后不同时间膝关节运动学之间的内在关系。(C)2016爱思唯尔有限公司版权所有
This study was to investigate the in vivo tibiofemoral cartilage contact locations before and after anterior cruciate ligament (ACL) reconstruction at 6 and 36 months.Ten patients with unilateral ACL injury were included. A step-up motion was analyzed using a combined magnetic resonance modeling and dual fluoroscopic imaging techniques. The preoperative (i.e. ACL deficient and healthy contralateral) and postoperative cartilage contact locations at 6 and 36 months were analyzed.Similar patterns of the cartilage contact locations during the step-up motion were found for the preoperative and postoperative knee states as compared to the preoperative healthy contralateral side. At the end of step-up motion, the medial contact locations at postoperative 36 months were more anterior when compared to the preoperative healthy contralateral (p=0.02) and 6 months postoperative knee states (p=0.01). The changes of the cartilage contact locations at 36 months after ACL reconstruction compared to the healthy contralateral side were strongly correlated with the changes at 6 months postoperatively.This study showed that the tibiofemoral cartilage contact locations of the knee changes with time after ACL reconstruction, implying an ongoing recovery process within the 36 months after the surgery. There could be an association between "the short-term (6 months) and longer-term (36 months) contact kinematics after ACL reconstruction. Future studies need to investigate the intrinsic relationship between knee kinematics at different times after ACL reconstruction. (C) 2016 Elsevier Ltd. All rights reserved.