Gehlsen G M, Stewart L B, Van Nelson C, Bratz J S
Biomechanics Laboratory, Ball State University, Muncie, IN 47306.
Med Sci Sports Exerc. 1989 Aug;21(4):463-6.
The purpose of this study was to determine the three-dimensional kinematics of the knee joint during running on level surfaces and surfaces of different degrees of camber. Fifteen college-age students (eight males, seven females) having no previous history of knee injury were subjects. A triaxial elgon was used to measure the movement of each subject's right and left knees when running on a horizontal or laterally inclined treadmill at 2.4 m.s-1 during each experimental condition (on the horizontal surface and on cambers of +0.087, +0.174, -0.087, and -0.174 radians). There was a significant difference (P less than 0.05) between +0.174 and -0.174 rad camber mean values for all six dependent variables (i.e., support and swing, flexion-extension, internal and external rotation, and valgus-varus range of motion). There was also a significant difference (P less than 0.05) when +0.174 and -0.174 rad camber were compared to 0 rad camber during both the support and swing phases of flexion-extension. Surface camber mean values for +0.087 and -0.087 rad were significantly different (P less than 0.05) during the swing phase for internal and external rotation. This study showed that the kinematics of the knee joint are significantly altered when running on a laterally inclined surface.
本研究的目的是确定膝关节在平坦表面和不同弧度表面上跑步时的三维运动学。15名无膝关节损伤史的大学生（8名男性，7名女性）作为研究对象。在每个实验条件下（在水平表面以及弧度为+0.087、+0.174、-0.087和-0.174弧度的外倾面上），使用三轴电子测角仪测量每个受试者在以2.4米/秒的速度在水平或横向倾斜跑步机上跑步时左右膝关节的运动。对于所有六个因变量（即支撑和摆动、屈伸、内旋和外旋以及内外翻活动范围），+0.174弧度和-0.174弧度外倾面的平均值之间存在显著差异（P<0.05）。在屈伸的支撑和摆动阶段，将+0.174弧度和-0.174弧度外倾面与0弧度外倾面进行比较时，也存在显著差异（P<0.05）。在摆动阶段，内旋和外旋时，+0.087弧度和-0.087弧度的外倾面平均值存在显著差异（P<0.05）。本研究表明，在横向倾斜表面上跑步时，膝关节的运动学有显著改变。
