US 12,226,324 B2 · Trial neck

Abstract

Kits and methods for use in intraoperative trialling of hip prostheses to determine an appropriate length for the femoral neck component of a prosthetic hip joint, are described. A kit for use in selecting a femoral neck component of an orthopaedic joint prosthesis kit comprises a first and a second broach. Each of the first and second broaches has a neck connection element comprising a projection extending from a proximal surface of the broach, each projection having a length. The projection on the first broach has a different length than the projection on the second broach. The kit also includes a trial femoral neck component having a neck connection element in the form of a recess in a distal surface. The recess is configured to mate with the projection on each of the first or second broaches such that mating of the trial femoral neck component with the first broach provides an assembly with a first neck length, and the mating of the trial femoral neck component with the second broach provides an assembly with a second neck length.

Claims15

Dependent claims

A kit for use in selecting a femoral neck component of an orthopaedic joint prosthesis, the kit comprising:

a first and a second broach, each of the first and second broaches having a neck connection element comprising a projection extending from a proximal surface of the broach, each projection having a length, the projection on the first broach having a different length than the projection on the second broach, and
a trial femoral neck component having a neck connection element in the form of a recess in a distal surface, the recess being configured to mate with the projection on each of the first or second broaches such that mating of the trial femoral neck component with the first broach provides an assembly with a first neck length, and in which the mating of the trial femoral neck component with the second broach provides an assembly with a second neck length.

A method of selecting a femoral neck component for use in an orthopaedic joint prosthesis, the method comprising the step of:

(i) using a kit comprising:
a broach having a neck connection element comprising a projection extending from a proximal surface of the broach, and
a trial femoral neck component having a neck connection element in the form of a first recess and a second recess in a distal surface of the neck component, the first and second recesses being laterally spaced apart on the distal surface, each recess being configured to mate with the projection on the broach, such that mating of the projection on the broach with the first recess on the trial femoral neck component provides an assembly with a first horizontal offset, and in which the mating of the projection on the broach with the second recess on the trial femoral neck component provides an assembly with a second horizontal offset;
(ii) broaching a patient's femur using the broach;
(iii) retaining the broach within the patient's femur;
(iv) connecting the trial femoral neck component to the broach by mating the projection on the broach with one of the first recess or the second recess on the trial femoral neck component to provide a trial femoral neck component with a first horizontal offset;
(v) connecting a trial femoral head component to the trial femoral neck component;
and
(vi) performing a trial reduction.

6 more elements

Dependencies are inferred from the claim text.

Trial neck

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Trial neck

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Abstract

Claims15