摘要:
An artificial hip joint is provided including a generally hemispherical acetabular cup with a generally hemispherical liner mated within the acetabular cup and with a locking ring to secure the liner within the acetabular cup. The acetabular cup is adapted to be secured within a hip bone. The liner includes a hemispherical inside surface for pivotably supporting a head at an upper end of a femur. The locking ring resides within an annular groove in the acetabular cup and an annular seat in the liner. The locking ring includes a captured end and a free end. The captured end includes a slot which cooperates with a post in the acetabular cup to slidably hold the captured end to the acetabular cup. The locking ring removably attaches the liner to the acetabular cup.
摘要:
A bone plate has a plurality of line locks arranged along its length. Each of the line locks has a plurality of passageways designed to receive the ends of a flexible line such that one or both of the ends can be drawn through the line lock along only one direction. The lines may encircle the bone fragments to be set to keep them in place. The line locks enable the lines to be easily tightened and re-tightened as needed. A bone prosthesis has a line lock having a plurality of passageways designed to receive one or both ends of a flexible line such that one or both ends can be drawn through the line along only one direction. The line can then be used to secure the bone prosthesis to one or more bones. The bone prosthesis may be a joint prosthesis or the like.
摘要:
An interbody spacer for insertion between vertebral members. The spacer includes a body having posterior and anterior sides, and inferior and superior faces. The spacer further includes a plurality of teeth to maintain the position of the spacer between the vertebral members. The teeth are aligned in a pattern and have a shape to allow insertion into the space between the vertebral members, and prevent or limit movement once the spacer is positioned in the space.
摘要:
A ball and socket joint prosthesis for use in arthroplasty is provided. The prosthesis includes a body for implantation at least partially within the medullary canal of a long bone. The long bone defines trabeculae in the proximal cancellous bone and lamellae in the cortical bone. The body includes a proximal portion thereof and a distal portion. The proximal portion has a medial periphery and includes surface features on a substantial portion of its proximal portion. The surface features are positioned to optimally transfer load from the prosthesis to the long bone.
摘要:
The surface of a bone implant disposed with a plurality of grooves (20) along its longitudinal axis or at a sharp angle thereto which form an angle null radial the longitudinal axis (41) of the implant body (11) in at least one of multiple sections (16) and have different depths across their lengths. Said grooves may be configured in wedge or diamond shape or take the form of a curved wedge (231) or of elongated curved segments (251) of varying depths across their lengths and extending in axial, spiraling or crosswise-coiling manner relative the perimeter of the implant. Such a configured surface structure affords an improved deposition of bone tissue osteons. A titanium layer sputtered on the implant surface allows for osteocytes to collect in the troughs thereby created. The surface structure can be utilized preferably in the case of tooth implants but also in other bone implants including those having curved longitudinal axes.
摘要:
A ball and socket joint prosthesis (10) for use in arthroplasty is provided. The prosthesis includes a body (32) for implantation at least partially within the medullary canal (24) of a long bone (12). The long bone defines trabeculae (60) in the proximal cancellous bone (22) and lamellae (71) in the cortical bone (65). The body includes a proximal portion (52) thereof and a distal portion (54). The proximal portion has a medial periphery (69) and includes surface features (64) on a substantial portion of its proximal portion. The surface features are positioned to optimally transfer load from the prosthesis to the long bone.
摘要:
A ball and socket joint prosthesis (10) for use in arthroplasty is provided. The prosthesis includes a body (32) for implantation at least partially within the medullary canal (24) of a long bone (12). The long bone defines trabeculae (60) in the proximal cancellous bone (22) and lamellae (71) in the cortical bone (65). The body includes a proximal portion (52) thereof and a distal portion (54). The proximal portion has a medial periphery (69) and includes surface features (64) on a substantial portion of its proximal portion. The surface features are positioned to optimally transfer load from the prosthesis to the long bone.
摘要:
A joint prosthesis for attachment to a bone of a patient, comprising an anchor with a head surface and a stem for attachment to an end of the bone, the head surface having an anatomically accurate shape.
摘要:
An acetabular or cotyloid implant. The implant includes a cotyle having an internal cavity which is adapted to receive an insert. At least one groove is arranged on an outer surface of the cotyle. The at least one groove is adapted to receive an independent element.
摘要:
A shoulder prosthesis including a fracture stem has a body having an exterior surface, a shank attached to the body and a head. The body includes a medial fin, an anterior fin and a posterior fin. The medial fin includes a suture hole. The anterior and posterior fins each include a plurality of suture holes. The prosthesis further includes a lateral suture hole intersecting the exterior surface of the body. The lateral suture hole may be formed in a projection on the lateral side of the prosthesis. In an alternative embodiment, a trail prosthesis includes indicia for noting the proper placement of the stem. The prosthesis includes corresponding indicia for replicating the placement of the trial stem.