Orthopedic implant with self-reinforced mantle

Details Orthopedic implant with self-reinforced mantle Orthopedic implant with self-reinforced mantle

1994-03-30

1996-04-16

Prebilic, Paul

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

623 18, 623 22, 623 23, 606 76, A61F 228

Patent

active

055078141

ABSTRACT:
An orthopedic implant, such as the bone-implantable portion of a joint prosthesis, in which a rigid stem is dimensioned to be received in the intramedullary canal of a bone, and in which the stem has at least a portion of its length encased in a preformed mantle consisting of a self-reinforced poly(methylmethacrylate) fiber composition where the fibers are oriented in predetermined directions with respect to the axis of the stem, are of a diameter within the range of about 5 to 500 microns (.mu.m), and have aligned molecular chains that provide such fibers with longitudinal heat relaxation ratios of no less than about 6 to 1 is disclosed. Also disclosed are the methods for making such an implant and for securing it in an intramedullary canal.

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