A high-modulus polymer for porous orthopedic implants: biomechanical compatibility of porous implants.
A high-modulus polymer, polysulfone, was evaluated as a porous bone implant material. The bone ingrowth into canine cortical pellets of sintered polysulfone particles was assessed by microradiography and histology. The shear strength of the porous polysulfone-bone interface was determined by push-out and pull-out tests of cortical and trochanteric implants, respectively. Results indicated that the bone ingrowth into porous polysulfone specimens proceeded in such a fashion as to mimic the normal repair at the site. Mechanical testing of cortical and cancellous implants revealed that the interfacial shear strength of the porous polysulfone-bone composite was similar to that achieved using porous metals.
D001672:Biocompatible Materials; D001696:Biomechanical Phenomena; D001842:Bone and Bones; D011108:Polymers; D019736:Prostheses and Implants; D013450:Sulfones
D001672:Biocompatible Materials; D011108:Polymers; D013450:Sulfones