Interpositional biarticular disk implant

Details Interpositional biarticular disk implant Interpositional biarticular disk implant

A - Human Necessities

61

F

A61F 2/42 (2006.01)

Patent

CA 2522660

An interpositional biarticular disk implant (11) having a circular peripheral rim, a generally toroidal axial center opening (13) and convex upper and lower surfaces (15, 17) is implanted between resected concave surfaces of the metacarpal base and the trapezium or other carpal bone in a CMC joint replacement. The disk (11) is anchored in operative position through the use of a flexible cord, such as a harvested tendon, that passes through the center opening (13) and through osseous passageways created in the two facing bones.

L'invention porte sur un implant (11) discoïdal biarticulaire comportant: un bord circulaire; une ouverture (13) axiale centrale sensiblement toroïdale et des surfaces (15, 17) supérieures et inférieures convexes. Ledit implant se pose entre les surfaces résectionnées de la base du métacarpe et le trapèze ou autre os carpien pour le remplacement d'une articulation carpo-métacarpienne (CMC). Pour l'opération, le disque (11) est maintenu en position par un lien souple tel qu'un tendon prélevé qui passe par l'ouverture centrale (13) et par des passages intraosseux formés dans les deux os se faisant face.

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