Temporal kinematic differences throughout single and double-leg forward landings

JOURNAL OF BIOMECHANICS

卷:99

Article

Hogg, Jennifer A.¹  Vanrenterghem, Jos²  Ackerman, Terry³  Anh-Dung Nguyen⁴  Ross, Scott E.⁵  Schmitz, Randy J.⁵  Shultz, Sandra J.⁵ 

[1] Univ Tennessee, 518 Oak St,204C Metropolitan Bldg, Chattanooga, TN 37403 USA

[2] Katholieke Univ Leuven, Dept Rehabil Sci, Leuven, Belgium

[3] Univ Iowa, Iowa City, IA 52242 USA

[4] West Virginia Univ, Morgantown, WV 26506 USA

[5] Univ N Carolina, Greensboro, NC USA

关键词: ACL;    Task differences;    Valgus;    Statistical parametric mapping;   

DOI  :  10.1016/j.jbiomech.2019.109559

来源: Elsevier

【 摘 要 】

Screening methods for anterior cruciate ligament (ACL) injuries often involve double-leg landings, though the majority of ACL injuries occur during single-leg landings. Differences in kinematic temporal characteristics between single-leg and double-leg landings are poorly understood. The purpose of this study was to examine discrete and temporal kinematics associated with functional valgus collapse during single-leg and double-leg landings (LAND(SL) and LAND(DL)). Three-dimensional kinematics were obtained during the landing phases of LAND(SL) and LAND(DL) in ninety participants (45 females: 20.1 +/- 1.7 yr, 165. 2 +/- 7.6 cm, 68.6 +/- 13.1 kg; 45 males: 20.7 +/- 2.0 yr, 177.7 +/- 8.5 cm, 82.8 +/- 16.3 kg). Peak joint angles and time series curves for frontal and transverse plane hip and knee kinematics were analyzed with an RMANOVA (discrete variables) and Statistical Parametric Mapping (SPM) paired t-tests (time series). LAND(SL) elicited greater knee abduction than LAND(DL) from 0 to 35% (0-73 ms) but greater knee adduction from 54 to 100% (112-207 ms). Peak knee abduction was 2.0 degrees greater during LAND(DL) than during LAND(SL) (p <.001). LAND(DL) elicited greater hip adduction than LAND(DL) from 2 to 33% (4-69 ms) and greater hip abduction from 49 to 100% (102-207 ms). Peak hip adduction was 4.6 degrees greater during LAND(SL) than during LAND(DL) (p <.001). LAND(SL) elicited less knee internal rotation from 0 to 3% and greater hip internal rotation from 52 to 75% of the landing phase. Peak transverse plane joint angles did not differ between tasks. During the time frame in which ACL injuries are thought to occur, LAND(SL) elicited frontal plane knee and hip movement consistent with risky biomechanics. Researchers and clinicians should be cognizant of how a chosen screening task alters observed kinematic effects. (C) 2019 Elsevier Ltd. All rights reserved.

【 授权许可】

Free