Biomechanical analysis of abnormal canine and avian stifles
Baker, Katherine McDowell
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By continuously measuring the kinematics of the stifle in all six degrees of freedom, the effects of various treatments may be quantitatively investigated. The Oxford knee rig provides a validated method of simulating deep flexion of the stifle in vitro while retaining its full range of motion and minimizing variability between animals. The studies herein used a modified Oxford knee rig and a three-dimensional motion capture system to investigate (i) the effects of tibial plateau angle and spacer thickness on canine total knee replacement and (ii) the variability of stifle kinematics among broiler chicken breeds with varying susceptibilities to leg deformities. Strain to the collateral ligaments in the canine and the gastrocnemius tendon in the broiler were also investigated. Results from both studies showed measurable changes in stifle kinematics, and results may be used to improve the welfare of canines with stifle osteoarthritis and chickens bred for rapid growth rate.