Abstract

The purpose of this study was to describe the movement of the broiler, layer, and turkey stifle as the joint traveled from a position of a sitting bird to a standing bird. This movement was described using the kinematic parameters of flexion, rotation, adduction/abduction as defined by the joint coordinate system procedure. The joint movement was simulated by placing cadaver limbs in an Oxford-Rig device. Results indicate that the relationship of flexion to rotation rate was linear for the broilers, layers, and turkeys where the average rotational rate was 1.2 per degree of flexion, 0.61 per degree of flexion and 0.46 per degree of flexion, respectively. This relationship for the broilers was significantly different than the relationships for both the turkey and layers, thereby suggesting that the kinematics of the broiler stifle differs from the kinematics of the layers and turkeys.

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