Femoral component of a knee prosthetic including three curvature radii
First Claim
1. A femoral part of a knee prosthetic of the type known as comprising three compartments, including two condyles and a trochlea support surface wherein the femoral part is to be anchored to a distal extremity of a femur and an external surface of the condyles is to co-operate with an upper external surface of a tibia insert such that, in a longitudinal section, the trochlea support surface defines a trochlean trajectory following a first circular arc and, still in a longitudinal section, the external surface of the condyles includes at least partially an intermediary circular arc, wherein in a longitudinal section, the external surface of the condyles comprises an intermediary surface and an extremity surface both of which are a circular arc, with the intermediary circular arc extending over an angle of 80°
- to 90°
, the extremity circular arc extending over an angle of 40°
to 50°
, the value of a curvature radius of the extremity arc being strictly less than the value of a curvature radius of the intermediary arc.
3 Assignments
0 Petitions
Accused Products
Abstract
A femoral part of a knee prosthetic of the type known as comprising three compartments, including two condyles (2) and a trochlea surface part (3) wherein the femoral part is to be anchored to the distal extremity of a femur and the external surface of the condyles is to co-operate with the upper external surface of a tibia insert such that, in a longitudinal section, the trochlea support surface (3) defines a trochlean trajectory following a first circular arc and, still in a longitudinal section, the external surface of the condyles (2) includes at least partially an intermediary circular arc (5), characterized in that in a longitudinal section, the external surface of the condyles (2) comprises an intermediary surface (5) and an extremity surface (6) both of which are a circular arc, with the intermediary circular arc (5) extending over an angle of 80° to 90°, the extremity circular arc (6) extending over an angle of 40° to 50°, the value of the curvature radius of the extremity arc (6) being strictly less than the value of the curvature radius of the intermediary arc (5).
41 Citations
3 Claims
-
1. A femoral part of a knee prosthetic of the type known as comprising three compartments, including two condyles and a trochlea support surface wherein the femoral part is to be anchored to a distal extremity of a femur and an external surface of the condyles is to co-operate with an upper external surface of a tibia insert such that, in a longitudinal section, the trochlea support surface defines a trochlean trajectory following a first circular arc and, still in a longitudinal section, the external surface of the condyles includes at least partially an intermediary circular arc, wherein in a longitudinal section, the external surface of the condyles comprises an intermediary surface and an extremity surface both of which are a circular arc, with the intermediary circular arc extending over an angle of 80°
- to 90°
, the extremity circular arc extending over an angle of 40°
to 50°
, the value of a curvature radius of the extremity arc being strictly less than the value of a curvature radius of the intermediary arc. - View Dependent Claims (2, 3)
- to 90°
Specification