NON-PLANAR ORTHOPEDIC IMPLANTS AND METHODS

摘要

Deformable joint implants with a generally hyperbolic paraboloid shape are disclosed, including configurations for delivery into the small joints of the body in the wrists, hands, ankle and feet, such as the first carpo-metacarpal joint, which comprises a double-saddle structure. The center of the implant may be supported, or supported and configured as a central opening. Implants with supported center regions may have a uniform or non-uniform thickness. A region of non-uniform, reduced thickness may be circular, oval or ring-like in shape, with a central support that may have an increased thickness relative to the perimeter region of the implant.

主权项

1. An orthopedic implant, comprising:
a body, with a proximal face, a distal face, and a perimeter edge therebetween, wherein the body has an unstressed hyperbolic paraboloid configuration and a stressed generally planar configuration; wherein in the unstressed configuration, the proximal face has a convex region along a first direction of the body and a concave region along a second direction of the body that is orthogonal to the second direction of the body; and wherein the distal face has a concave region along the first direction of the body and a convex region along the second direction.