Interpositioning collar for prosthetic bone insert

Details Interpositioning collar for prosthetic bone insert Interpositioning collar for prosthetic bone insert

1975-09-24

1977-03-22

Frinks, Ronald L.

Surgery

Truss

Pad

3 1913, 128 92C, 128 92CA, A61F 124

Patent

active

040127966

ABSTRACT:
A collar of a low modulus of elasticity material is interpositioned between the collar of a metal prosthetic hip stem implanted in the intermedullary canal of the femur and the adjacent calcar or outer edge of the bone. A flange depends from the insert between the upper portion of the stem and the inner wall of the bone. The interpositioned collar is either a full elongated tapered O-shape or it is open on one side of a tapered U-shape.

REFERENCES:
patent: 2785673 (1957-03-01), Anderson
patent: 3820167 (1974-06-01), Sivash
patent: 3848272 (1974-11-01), Noiles
patent: 3879767 (1975-04-01), Stubstad
patent: 3938198 (1976-02-01), Kahn et al.
Hip Prosthesis Size Definition Chart from Zimmer Catalog, Zimmer, U.S.A., Warsaw Ind., p. A3, Rev. 2, Jan., 1974, (Moore Hip Prosthesis Relied Upon).

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