Inventors:
Richard A. Salzstein - Wilmington DE
Guy R. Toombes - Salt Lake City UT
Assignee:
BHC Laboratories, Inc. - Wilmington DE
International Classification:
A61F 232
Abstract:
Disclosed is an improvement in a femoral implant for a hip prosthesis involving a longitudinal shaft having a neck extending therefrom at an acute angle. theta. to the longitudinal direction made of layers of carbon fiber in a polymeric matrix, each layer containing unidirectional fibers and the layers arranged such that carbon fibers are oriented in the longitudinal direction and the. +-. theta. direction. The improvement involves balancing at least 50% of the layers in the. +-. theta. direction.