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Quantitative measurement of muscle atropy after ACL reconstruction

ACL 重建后肌肉萎缩的定量测量

基本信息

批准号：
05671197
负责人：
FUKUBAYASHI Toru
金额：
$ 1.22万
依托单位：
University of Tsukuba
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1994
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05671197/
关键词：
ReconstructionfACL Muscle Atrophy MRI Muscle Power Training 膝前十字靭帯再建

项目摘要

(1) Quantitative measurement of the quadriceps atrophy and herniation after the ACL reconstruction using the iliotibial tract were performed with the magnetic resonance image (MRI). 11 competitive level athletes were investigated. From the 15 axial slices of the MRI,muscle volume of all components of qurdriceps femoris and hamstrings were measured. The muscle volume of the vastus medialis showed 8% decrease comparing to the normal side. The spatial position of the quadriceps femoris rotated about 40ﾟ externaly comparing to the normal side. Though the largest external rotation occured at vastus lateralis, vastus medialis and intermedius also showed certain tendency of the excessive external rotation. At 60 and 180 deg/sec leg extension of the operated side showed 15% and 9% decrease of the peak torque in comparison with the control side.(2) Quantitative volume measurements of quadriceps femoris and hamstrings after ACL reconstruction were performed with the same MRI technique. 33 competitive or recreational level athletes who underwent ACL reconstruction with semitendinosus and gracilis tendons were investigated more than 1 year after the operatio. The muscle volume of quadriceps femoris and hamstrings showed 5-9% decrease in comparison with the control side. Though the tendinous portions were extirpated, the semitendinosus and gracilis muscles still preserved 60% and 71% of the control side volume, and exhibited muscle contraction at the Tagging Snapshot. There was no regeneration of the extirpated tendons. Slight hypertrophy of semimembranosus and biceps femoris muscle were observed in ha f of the cases. These morphological changes of thigh muscles were slightly related to the peak torque of knee extension and flexion.

(1)采用磁共振成像（MRI）对髂胫束重建ACL后的股四头肌萎缩和疝形成进行定量测量。对11名竞技水平运动员进行了调查。在MRI的15个轴向切片上，测量股四头肌和腘绳肌各组成部分的肌肉体积。股内侧肌体积较健侧减少8%。股四头肌的空间位置较健侧向外旋转约40 °。最大外旋发生在股外侧肌，但股内侧肌和中间肌也有过度外旋的趋势。在60和180度/秒时，与对照侧相比，操作侧的腿伸展显示出15%和9%的峰值扭矩降低。(2)采用相同的MRI技术对ACL重建后的股四头肌和腘绳肌进行定量体积测量。对33名竞技或娱乐水平的运动员采用半腱肌和股薄肌肌腱重建ACL术后1年以上的情况进行了调查。股四头肌和腘绳肌的肌肉体积与对照侧相比减少5-9%。虽然肌腱部分被切除，半腱肌和股薄肌仍然保留60%和71%的控制侧的体积，并表现出肌肉收缩的标记快照。肌腱无再生。半膜肌和股二头肌轻度肥大。大腿肌肉的这些形态学变化与膝关节伸、屈时的峰值力矩略有相关。