Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Reexamination Certificate
2005-08-09
2005-08-09
Prebilic, Paul B. (Department: 3738)
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
C623S020290, C623S022180
Reexamination Certificate
active
06926739
ABSTRACT:
A prosthesis device (1) for correct replacing of the articular surfaces of the human ankle joint comprises: a first component (2) having a spherical convex articular bearing surface (5); a second component (3) having a bearing surface (6) which has a convex shape in the frontal plane, and concave sulcus in the frontal plane; and a third component (4) located between said first and second components (2, 3) and having two surfaces (7, 8) which are complementary to and engage the upper convex and the lower concave sulcus surfaces (5, 6) to be fully congruent with the components (2, 3). The three components (2, 3, 4) can be designed from the subject-specific geometry of the ligaments (9, 10). The device (1) can move under natural muscular and ligamentous control, closely restoring that of a natural joint and maintaining uniform load distribution. A prosthesis device (1) implanted according to a stated method of ensuring equal dorsi- and plantar-flexion gaps between first (2) and second (3) components, is a part of the invention.
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Catani Fabio
Giannini Sandro
Leardini Alberto
O'Connor John J.
Fay Sharpe Fagan Minnich & McKee LLP
Instituti Orthopedici Rizzoli
O'Connor John J.
Prebilic Paul B.
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