López Sergio, Vilar José M, Rubio Mónica, Sopena Joaquin J, Damiá Elena, Chicharro Déborah, Santana Angelo, Carrillo José M
Instituto Universitario de Investigaciones Biomédicas y Sanitarias, Universidad de las Palmas de Gran Canaria, Arucas, Las Palmas, Spain.
Departamento de Patología Animal, Universidad de las Palmas de Gran Canaria, Arucas, Las Palmas, Spain.
BMC Vet Res. 2019 May 8;15(1):138. doi: 10.1186/s12917-019-1881-1.
The limb center of pressure (COP) path measures and quantifies the load distribution within a limb in a still or moving subject. Under this premise, the aim of this study was to test whether data derived from this parameter could detect the differences between sound and lame limbs in unilaterally lame dogs with elbow dysplasia. To accomplish this purpose, ten unilaterally lame dogs of similar conformation were walked over a pressure platform. Next, the COP path, in relation to the position of sound and lame limbs, was measured in a coordinate system over a standard paw template obtained by pedobarography during the whole support phase. To compare variables, force platform data (peak vertical force and vertical impulse) from the same animals were obtained. Sound and lame limb statokinesiograms were also obtained while the animals stood still.
The statistical analysis clearly showed that COP in lame limbs start cranially and were shorter than sound limbs. In addition, the value of the COP excursion index was lower in lame limbs. Finally, the area of statokinesiograms was greater in lame limbs.
This methodology based in limb COP characteristics serves to discriminate between sound and lame limbs in dogs with elbow dysplasia.
肢体压力中心（COP）轨迹测量并量化静止或运动个体肢体内部的负荷分布。在此前提下，本研究的目的是测试从该参数得出的数据能否检测出患有肘部发育异常的单侧跛行犬健全肢体和跛行肢体之间的差异。为实现这一目的，让十只体型相似的单侧跛行犬在压力平台上行走。接下来，在整个支撑阶段，通过足底压力测量法在标准爪模板的坐标系中测量与健全肢体和跛行肢体位置相关的COP轨迹。为比较变量，获取了同一批动物的力平台数据（垂直力峰值和垂直冲量）。在动物静止站立时还获取了健全肢体和跛行肢体的静态运动图。
统计分析清楚地表明，跛行肢体的COP起始于颅骨方向且比健全肢体短。此外，跛行肢体的COP偏移指数值更低。最后，跛行肢体的静态运动图面积更大。
这种基于肢体COP特征的方法有助于区分患有肘部发育异常的犬的健全肢体和跛行肢体。
