摘要:
A prosthetic device according to which a time-dependent degree of resistance is provided to at least one predetermined type of relative directional motion between first and second components of the device.
摘要:
Methods for forming a shaped surface, for example, a shaped end plate between adjacent vertebral bodies, and a bone removal device for use in such methods. The device includes a contour having a predetermined profile corresponding at least in part to an implant, and a cutting element following the contour and having a cutting edge having a profile corresponding to the contour profile.
摘要:
Methods and devices for providing a stabilized implant at a site of implantation include providing locking members on faces of the implant and applying bone cement to the implant faces. The locking members secure the bone cement so that the bone cement will not be substantially displaced when the implant is inserted at an implantation site.
摘要:
An vertebral implant is interposed between two vertebral endplates and comprises a first endplate assembly having a first restraint mechanism extending from a first exterior surface for engaging a first vertebral endplate The implant further comprises a second endplate assembly having a second restraint mechanism extending from a second exterior surface for engaging a second vertebral endplate and a central body articulable between the first and second endplate assemblies. The first restraint mechanism has a shape that matches a contour in the first vertebral endplate.
摘要:
An intervertebral implant comprises a first member for engaging a first vertebral body and a second member for engaging a second vertebral body. The first member has a first surface with a first curve, and the second member has a second surface with a second curve. The first member is translatable with respect to the second member and the second curve is positioned within the first curve to bias the first and second curved surfaces towards central alignment along a longitudinal axis passing through the first and second vertebral bodies.
摘要:
An intervertebral implant comprises a first member for engaging a first vertebral body and a second member for engaging a second vertebral body. The first member has a first surface with a first curve, and the second member has a second surface with a second curve. The first member is translatable with respect to the second member and the second curve is positioned within the first curve to bias the first and second curved surfaces towards central alignment along a longitudinal axis passing through the first and second vertebral bodies.
摘要:
A joint prosthesis comprises a first member for engaging a first bone portion and a second member for engaging a second bone portion. The first member comprises a first surface with a first curve and the second member comprises a second surface with a second curve. The first member is translatable with respect to the second member and the second curve is positioned within the first curve to bias the first and second curves towards alignment along a first axis passing through the first and second bone portions.
摘要:
This invention relates to a metal composite orthopedic device. The device can comprise a metallic substrate cladded or joined to one or more metallic layer(s). The substrate and metallic layer(s) can be selected of different metals and metal alloys to provide desired wear performance, imaging characteristics and optionally to serve as a reservoir for therapeutic agents.
摘要:
A method of, and apparatus for, arthroplasty of a knee joint comprising obtaining a desired spacing of the femur from the tibia by inserting a spacer into the knee joint between the femur and the tibia. The spacer is used as a reference for securing a guide jig in position about the knee joint for guiding resection of one or both of the femur and tibia for fitting of tibial and/or femoral prostheses. A method of resecting the femur while moving the tibia through an arc of motion to remove bone to the desired depth, a method of determining the position of the guide jig, the guide jog, an alignment device and the spacer are also described.
摘要:
A system for affixing at least two portions of bone is provided. The system has a first end cap, a second end cap, and a linking member extending between the first end cap and the second end cap, wherein the first end cap has at least one leg configured to connect the linking member to the first end cap and configured to retain said connection.