Relationship between Static Anterior Laxity Using the KT-1000 and Dynamic Tibial Rotation during Motion in Patients with Anatomical Anterior Cruciate Ligament Reconstruction

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概要

• 論文の詳細を見る

• The anterior cruciate ligament (ACL) plays an important role in controlling knee joint stability, not only by limiting tibial anterior translation but also by controlling knee axial rotation. The aim of ACL reconstruction is to reduce excessive anterior joint laxity, hoping to restore normal tibiofemoral kinematics including knee axial rotation. The purpose of this study was to investigate the relationship between static anterior instability and tibial rotation during several activities in an anterior cruciate ligament reconstructed knee. Seven patients with unilateral ACL injury performed plain walking, running, landing and side step cutting tasks after ACL reconstruction with a mean follow-up of 14 months. The kinematic data for the 4 motions was measured using a motion analysis system and the point cluster technique. The evaluation period was defined to be from the first contact to removal of the tested leg from the ground. Maximum tibial internal rotation during tasks was calculated using the point cluster technique (PCT). Passive anterior tibial translation was measured using a KT-1000 arthrometer. Regression analysis was used to determine the correlation of the maximum internal rotation with the side-to-side difference of static anterior tibial translation measured using a KT-1000 arthrometer. During side step cutting maneuvers, maximum tibial internal rotation significantly showed negative correlation with static anterior tibial translation (p<0.05, r=0.83). The anterior laxity contributed to the normal knee rotation kinematics. The normal anterior tibial translation obtained by ACL reconstruction is thought to be the key factor in successful restoration of normal knee kinematics.

著者

• MAEDA AKIRA

  Narita Orthopaedic Hospital

• MATSUSE Hiroo

  Division of Rehabilitation, Kurume University Hospital

• SHIBA NAOTO

  Department of Orthopaedic Surgery, Kurume University School of Medicine

• TAKANO YOSHIO

  Department of Physical Therapy, International University of Health and Welfare School of Health Sciences

• TAKANO YOSHIO

  Department of Chemical Engineering, Gunma University.

• SATO KOJI

  Kurume University Graduate School of Medicine

• IDA HIROFUMI

  Department of Sports Management, Jobu University

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