Talonavicular joint prosthesis
AssigneeBest Step Orthopedics LLC
InventorsRoy C. Wiley, Lew C. Schon, Malik S. Siddique
Life of this patent
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Abstract
A talonavicular joint prosthesis includes a navicular component configured to be implanted in a navicular bone and including a base and a surface having an articulation recess formed therein; and a talar component configured to be implanted in a talus bone and including a bearing section configured to rest within the articulation recess. The talar component and the navicular component are shaped such that, when brought together, there is more conformity between the navicular component and the talar component in a dorsal-plantar plane than in a medial-lateral plane.
Claims19
A talonavicular joint prosthesis, comprising:
- a navicular component configured to be implanted in a navicular bone and comprising a base and a surface having an articulation recess formed therein, the articulation recess defining an articulation recess boundary within the surface;
- and
- a talar component configured to be implanted in a talus bone and comprising a bearing section configured to rest within the articulation recess, the talar component and the navicular component being shaped such that, when brought together, there is more conformity between the navicular component and the talar component in a dorsal-plantar plane than in a medial-lateral plane, wherein there is separation between the bearing section and the articulation recess within the articulation recess boundary in both the dorsal-plantar plane and the medial-lateral plane when the talar component and the navicular component are brought together.
A talonavicular joint prosthesis, comprising:
- a navicular component configured to be implanted in a navicular bone and comprising a base and a surface having an articulation recess formed therein;
- and
- a talar component configured to be implanted in a talus bone and comprising a bearing section configured to rest within the articulation recess, the talar component and the navicular component being shaped such that, when brought together, there is more conformity between the navicular component and the talar component in a dorsal-plantar plane than in a medial-lateral plane, wherein the bearing section has a medial-lateral radius that is greater than a dorsal-plantar radius relative to an axis extending through a geometric center of the bearing section.
Dependencies are inferred from the claim text.