Use of an inverse dynamics method to describe the motion of the canine pelvic limb in three dimensions

Abstract

Knowledge of the 3-D movement of the pelvic limb can be used to better understand its motion, moment, and energy patterns in healthy dogs and provide a referent with which gaits of dogs with pelvic limb injuries before and after surgical repair or rehabilitation can be compared and characterized. This information can then be used to guide decisions regarding treatment options for dogs with pelvic limb injuries.

Use of an inverse dynamics method to compare the three-dimensional motion of the pelvic limb among clinically normal dogs and dogs with cranial cruciate ligament–deficient stifle joints following tibial plateau leveling osteotomy or lateral fabellar–tibial suture stabilization

“…26 Briefly, a 60-Hz, 4-camera, 3-D motion capture system a was used to collect kinematic data. 26 Briefly, a 60-Hz, 4-camera, 3-D motion capture system a was used to collect kinematic data.…”

“…26 Briefly, kinetic data were processed by custom software, c and kinematic data were processed by a motion analysis system. 26 Briefly, kinetic data were processed by custom software, c and kinematic data were processed by a motion analysis system.…”

“…26 Briefly, kinetic data were processed by custom software, c and kinematic data were processed by a motion analysis system. 26 For all dogs, mean joint angular excursions, net joint moments, and net joint powers were determined and graphed in the sagittal, frontal, and transverse planes Values reported are least square mean (SEM) or median (range). The synchronized data were processed, computer models were created and analyzed, and reports were produced with commercially available software, f and those outputs were input into a customized computer program g to determine critical events and values for computed variables.…”

Development of a neuromusculoskeletal computer model in a chondrodystrophic dog.

“…The center of rotation of the stifle joint was defined as the location between medial and lateral femoral condyle; this approximation was based on definitions from a study which also used a rigid body model of a canine pelvis and pelvic limb (Headrick et al, 2014). Although a reasonable approximation, it has been demonstrated that the location of the center of rotation of the stifle varies as a function of flexion/extension in dogs (Ireland et al, 1986).…”

“…The center of rotation of the tarsus joint was defined as the location between medial and lateral malleolus; this approximation was based on definitions from a study which also used a rigid body model of a canine pelvis and pelvic limb (Headrick et al, 2014). To the author's knowledge, no studies have been done to model abduction/adduction or internal/external rotation in the tarsal joint of dogs.…”