Finger Extensor Hood

Author: Benjamin Ellis, University of Utah
Index Finger Extensor Hood: Model of the extensor hood showing the Von Mises stress with a 45˚ proximal interphalangeal joint angle, a 30˚ distal interphalangeal joint angle, and 12 Newtons applied to the Extensor Digitorum Communis. The extensor hood is discretized with shell elements and represented with a St. Venant-Kirchhoff constitutive equation, while the bones are represented with rigid bodies. Contact between the hood and bones is enforced using an augmented-Lagrangian routine.