Assessment of Ankle-Subtalar-Joint-Complex Laxity Using an Instrumented Ankle Arthrometer: An Experimental Cadaveric Investigation.

作者：John E. Kovaleski, J. Marcus Hollis, Robert J. Heitman, Larry R. Gurchiek, Albert W. Pearsall · 发表于：PubMed · 年份：2002 · 被引用次数：81 · 研究领域：Foot and Ankle Surgery、Orthopedic Surgery and Rehabilitation、Lower Extremity Biomechanics and Pathologies

OBJECTIVE: To show the relationship between direct measurements of tibial-calcaneal bone motion and instrumented measurements of ankle-subtalar-joint-complex laxity using a portable ankle arthrometer; to assess within and between-tester measurement reliability; and to determine if the ankle arthrometer can detect increased mechanical laxity of the ankle-subtalar-joint-complex after simulated injury of the lateral ankle ligaments. DESIGN AND SETTING: We used linear regression analysis to examine the relationship between direct measurements of tibial-calcaneal bone motion and instrumented measurements of ankle-subtalar-joint-complex laxity. An intraclass correlation coefficient (2,1) was calculated to determine intratester and intertester reliability for instrumented measurements of ankle-subtalar-joint-complex laxity. In addition, 2 separate, one-way, repeated-measures analyses of variance were used to compare instrumented measures of anteroposterior displacement and inversion-eversion rotation among the intact ankles after sectioning the anterior talofibular ligament and both the anterior talofibular and calcaneofibular ligaments. Data were collected in a biomechanics laboratory setting. SUBJECTS: Six fresh-frozen human-cadaver ankle specimens were studied. MEASUREMENTS: Testing involved the concurrent measurement of tibial-calcaneal bone motion and ankle-subtalar-joint-complex motion during the application of external loads. An instrumented ankle arthrometer was used to load...