Patellar prosthesis and method of making the same

Details Patellar prosthesis and method of making the same Patellar prosthesis and method of making the same

1990-01-16

1991-05-28

Frinks, Ronald

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

Implantable prosthesis

Bone

623901, 264274, A61F 238

Patent

active

050191047

ABSTRACT:
A composite metal/plastic patellar prosthesis for implantation in the human body to replace the articulating surface of the patella is provided. The prosthesis includes a polymeric articulating surface portion and a metal backing having an anterior surface adapted to be attached to the posterior surface of a resected patella, and a dome or conically shaped posterior surface to which the polymeric articulating surface portion is heat and pressure molded. The metal backing portion has at least one aperture extending therethrough which has a greater cross-sectional area on the anterior side than on the posterior side into which an anchoring peg integral with the antrior surface of the polymeric articulating surface portion is molded. The metal and plastic components of the composite are coextensive in size and shape.

REFERENCES:
patent: 4094017 (1978-06-01), Matthew et al.
patent: 4205400 (1980-06-01), Shen et al.
patent: 4240162 (1980-12-01), Devas
patent: 4479274 (1984-10-01), Bolesky et al.
Howmedica, Inc., Orthopedics Division, 359 Veterans Blvd. Rutherford, NJ 07070 No. H2030, dated 3/83 "The PCA Revision Total Knee System" at page 4.
Dow Corning Wright Corporation, 5677 Airline Rd., Arlington, TN 38002 No. 322-688T (1988) "Whiteside Ortholoc II Patella Implants".

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