Mechanism of the pivot shift

H. Matsumoto

研究成果: Article査読

139 被引用数 (Scopus)

抄録

The mechanism of the pivot shift was investigated by analysing movements under valgus torque in 29 fresh cadaveric knees. The movements were measured in three dimensions, using biplanar photography, when all the ligaments were intact, and then after the ligaments were sequentially divided. When only the anterior cruciate ligament was sectioned, the pivot shift occurred in seven out of 20 knees examined. In the other 13, though the pivot shift was not observed, an abnormal internal rotation occurred at between 10° and 50° of flexion. Division of the iliotibial tract in addition to division of the anterior cruciate ligament stopped the pivot shift, as the tibia remained internally rotated throughout the range of flexion. The axis of rotation of the pivot shift was located at the medical collateral ligament, which was kept tight by the applied valgus torque. The sudden movement in the pivot shift was caused by a complex interaction between the geometry of the knee and the valgus torque applied.

本文言語English
ページ(範囲)816-821
ページ数6
ジャーナルJournal of Bone and Joint Surgery - Series B
72
5
DOI
出版ステータスPublished - 1990

ASJC Scopus subject areas

  • 外科
  • 整形外科およびスポーツ医学

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