US 2025/0352348 A1 · KNEE REPLACEMENT IMPLANT HAVING STACKABLE SPACERS

Abstract

A knee replacement prosthesis includes a distal femoral implant, including a femoral head portion, including an outer arcuate surface, and interior posterior surface, an interior distal surface disposed at a first angle with respect to the interior posterior surface, and a first interior intermediate surface joining the interior posterior surface and the interior distal surface and being disposed at a second angle with respect to the interior posterior surface and at a third angle with respect to the interior distal surface. The distal femoral implant includes stackable femoral spacers secured to at least one of the interior posterior surface and the interior distal surface, thereby adjusting an aggregate spacing between the interior posterior surface and/or the interior distal surface and a resected surface of a distal femur of the patient. A tibial implant is also provided. Related methods of use of either implant or both are also provided.

Claims20

Dependent claims

A knee replacement prosthesis for a patient, the knee replacement prosthesis comprising:

a distal femoral implant comprising:
a femoral head portion comprising:
an outer arcuate surface configured to mate with one of a tibial baseplate or a proximal surface of a tibia of the patient;
an interior posterior surface;
an interior distal surface;
and
a first interior intermediate surface configured to join the interior posterior surface and the interior distal surface;
and
a plurality of stackable femoral spacers, each comprising a respective beveled edge, wherein:
a first posterior spacer of the plurality of stackable femoral spacers is configured to mate directly with the interior posterior surface;
and
a second posterior spacer of the plurality of stackable femoral spacers is configured to mate directly against with, and in a mirrored orientation with respect to, the first posterior spacer such that the respective first beveled edges of the first and second posterior spacers meet at a common point.

9 more elements

A knee replacement prosthesis method comprising:

joining an outer arcuate surface, of a femoral head portion of a distal femoral implant, with one of a tibial baseplate or a proximal surface of a tibia of a patient;
joining, using a first interior intermediate surface of the femoral head portion, an interior posterior surface of the femoral head portion to an interior distal surface of the femoral head portion;
joining, directly, a first posterior spacer of a plurality of stackable femoral spacers with a second posterior spacer of the plurality of stackable femoral spacers,
wherein each of the plurality of stackable femoral spacers comprises a respective beveled edge, and
wherein the first posterior spacer is joined in a mirrored orientation with respect to the second posterior spacer such that the respective first beveled edges of the first and second posterior spacers meet at a common point.

2 more elements

Dependencies are inferred from the claim text.

Knee replacement implant having stackable spacers

Life of this patent

Knee replacement implant having stackable spacers

Life of this patent

Abstract

Claims20