Ankle Biomichanic

Biomechanical Analysis of Ankle Kinematics and Ligament Strain in Snowboarding By Sébastien Delorme A Thesis submitted to The University of Ottawa in incomplete fulfillment of the Requirement for the Doctor of Philosophy in mechanised Engineering January 2004 incision of windup(prenominal) Engineering, University of Ottawa Ottawa-Carleton Institute for Mechanical and Aerospace Engineering © Sébastien Delorme Abstract Because snowboarders ar cognize to injure their mortise give voices more often than alpine skiers, it has been postulated that stiffer snowboard boots would walk out into account better protection to the ankle ligaments than current loco boots do. To outpouring this hypothesis, we have measured the kinematics of the feet and lower legs of five horse bill snowboarders riding overmaster a course of 10 gates on a ski hill apply an electromagnetic motion bring in system. Results were obtained with each snowboarder clothing soft boot s and stiffer step in boots. The measurements were expressed in anatomically germane(predicate) rotations of the ankle join complex. Two models were develop to estimate ligament strains from rotations of the ankle joint complex: 1) a statistical model exploitation published ligament strain measured on cadaver specimens at various combinations of ankle rotations as an intromission and extrapolation table to predict strains in two ankle ligaments at the rotations measured during the snowboarding trials; 2) a personalized 2-degrees-of-freedom kinematic model of the ankle joint complex, based on the Denavit-Hartenberg formulation of serial-link manipulators, to predict strains in five ankle ligaments from the sexual congress position of the shank and foot. The experimental results showed that the odd and right ankles be asymmetrically rotated, mostly in dorsiflexion, eversion and external rotation. Compared to step-in boots and bindings, soft boots and strap bindings allow ed more rotation of the ankle joint complex ! and more strain in the preliminary talofibular ligament, harmonize to the...If you want to get a full essay, nightclub it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay