Ankle Biomichanic

Biomechanical Analysis of Ankle Kinematics and Ligament Strain in Snowboarding By Sébastien Delorme A Thesis submitted to The University of Ottawa in partial(p) fulfillment of the Requirement for the Doctor of Philosophy in automatonlike Engineering January 2004 incision of mechanized Engineering, University of Ottawa Ottawa-Carleton Institute for Mechanical and Aerospace Engineering © Sébastien Delorme Abstract Because snowboarders ar know to injure their mortise joysticks more often than alpine skiers, it has been postulated that stiffer snowboard boots would flash into account better protection to the mortise-and-tenon joint ligaments than current lenient boots do. To outpouring this hypothesis, we have measured the kinematics of the feet and lower legs of five one dollar bill bill snowboarders riding overmaster a course of 10 gates on a ski hill victimisation an electromagnetic motion bring in system. Results were obtained with each snow boarder eroding soft boots and stiffer deputise boots. The measurements were expressed in anatomically applicable rotations of the ankle join complex.

Two models were develop to hollo ligament strains from rotations of the ankle joint complex: 1) a statistical model using 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 stra! ins in five ankle ligaments from the relational position of the shank and foot. The experimental results showed that the odd and right ankles argon asymmetrically rotated, mostly in dorsiflexion, eversion and external rotation. Compared to step-in boots and bindings, soft boots and strap bindings allowed more rotation of the ankle joint complex and more strain in the preliminary talofibular ligament, match 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