EP0128036A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Femoral hip prosthesis

Assignee: Howmedica Osteonics Corp

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Filing: 1984-06-04

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Granted: —

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Expires: 2004-06-04

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Abstract

Abstract A femoral hip prosthesis (10) comprises a stem component (12) generally divided into a proximal portion (22) and a substantially longer distal portion (26). The stem (12) has a slight posterior bow (28) along its length. The proximal portion (22) includes a slight twist of from about 5 to 15°, the twist extending in a direction from the anteriorto the posterior face of the stem (12) through the medial face thereof. The characteristics of the stem (12) provide a glove fit when inserted into a prepared intramedullary canal (18) in the femur (20).

Inventors

👤 Robert Vincent Kenna

Bibliographic Details

Application Number —

Jurisdiction EP

Data Source google_patents

Last Synchronized 2026-10-25 05:35

CPC Classifications

A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/36; A61F2/3662; A61F2/367; A61F2/30767; A61F2002/30001; A61F2002/30316; A61F2002/30317; A61F2002/30322; A61F2002/30769; A61F2002/3678; A61F2002/3698; A61F2250/00; A61F2250/0014; A61F2250/0026; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023; A61F2310/00029

Claims Analysis

Total Claims: 11

Claim 1

Independent Claim 82 words

A femoral hip prosthesis (10) comprising a stem component (12) with an anterior face, a posterior face, a lateral face and a medial face and generally divided into a proximal portion (22) and a substantially longer distal portion (26), the stem (12) having a slight posterior bow (28) along its length and a twist of from about 5 to 15° in the proximal portion (22), the twist extending in a direction from the anterior to the posterior face through the medial face.

Claim 2

Dependent Claim 82 words

Claim 3

Dependent Claim 37 words

A femoral hip prosthesis (10) as in claim 1 -wherein the length of the distal portion (26) is from about 2 to 3 times the length of the proximal portion (22) as measured along the medial face.

Claim 4

Dependent Claim 25 words

A femoral hip prosthesis (10) as in claim 1 wherein the twist generally commences at the boundary of the distal (26) and proximal (22) portions.

Claim 5

Dependent Claim 22 words

A femoral hip prosthesis (10) as in claim 3 wherein the twist extends throughout the proximal portion (22) and is about 9°.

Claim 6

Dependent Claim 23 words

A femoral hip prosthesis (10) as in claim 1 wherein the exterior surface of the proximal portion (22) includes a porous coating (40).

Claim 7

Dependent Claim 42 words

A femoral hip prosthesis (10) as in claim 1 wherein the proximal portion (22) is generally equally divided into a proximal segment (32), a central segment (34) and a distal segment (36) with a lateral flare (38) on the distal segment (36).

Claim 8

Dependent Claim 39 words

A femoral hip prosthesis (10) as in claim 6 including a neck (14) extending from the proximal segment (32), the neck (14) having an axis at an angle of about 45° to the general orientation of the stem (12).

Claim 9

Dependent Claim 24 words

A femoral hip prosthesis (10) as in claim 7 wherein the neck (14) is anteverted at an angle of from about 5 to 15°.

Claim 10

Dependent Claim 18 words

A femoral hip prosthesis (10) as in claim 8 including a capitulum (16) secured to the neck (14).

Claim 11

Dependent Claim 24 words

A femoral hip prosthesis (10) as in claim 9 wherein the capitulum (16) and the neck (14) are secured together by a Morse fit.

References Cited (Backward Citations)

FR1046516A Cited

FR2194123A5 Cited

US4135507A Cited

DE2851598A1 Cited

EP0038908A1 Cited

US4292695A Cited

EP0093869A1 Cited

EP0094743A1 Cited

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