Mechanism of quadriceps femoris muscle weakness in patients with anterior cruciate ligament reconstruction

Y. Konishi, T. Fukubayashi*, D. Takeshita

*この研究の対応する著者

研究成果: Article査読

84 被引用数 (Scopus)

抄録

The purpose of this study was to investigate gamma loop function in the quadriceps femoris muscle in patients who with less than 6 month-history of anterior cruciate ligament (ACL) reconstruction. For this purpose, we compared the response to vibration stimulation in 10 patients with ACL repair and 12 normal healthy subjects, by measuring the maximal voluntary isometric contraction (MVC) and integrated electromyograms (I-EMG) of the quadriceps muscles. Pre-vibration data were obtained from each subject by measuring the MVC of the knee extension and the I-EMG from the vastus medialis, vastus lateralis, and rectus femoris muscles. Vibration stimulation was applied to the infrapatellar tendons, followed immediately by repeating the MVC and I-EMG recording. Prolonged vibration resulted in a significant decrease of both MVC and I-EMG in the control group. In contrast, the same stimulus failed to elicit changes in ACL-repair group. Our results suggest the presence of abnormal gamma loop function in the quadriceps femoris muscle of patients with ACL repair, which may explain the muscle weakness often described in such patients.

本文言語English
ページ(範囲)371-375
ページ数5
ジャーナルScandinavian Journal of Medicine and Science in Sports
12
6
出版ステータスPublished - 2002
外部発表はい

ASJC Scopus subject areas

  • 公衆衛生学、環境および労働衛生
  • 理学療法、スポーツ療法とリハビリテーション
  • 整形外科およびスポーツ医学

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