The invention relates to an attachment member (2) and a connecting member (16) for a carpometacarpal thumb joint prosthesis (1) as well as to said thumb joint prosthesis. The attachment member (2) comprises a screw-like part (4) for attachment by screwing into the second metacarpal bone and a locking device (8) for locking the screw-like part to the connecting member (16). The connecting member comprises an elongated, arcuate element (16) which at one end portion (16a) thereof is configured with a hole (14) for connection to the attachment member (2) for the second metacarpal bone and which at the opposite end portion (16b) thereof is configured with a hole (15) for connection to an attachment member (3) for the first metacarpal bone. The joint prosthesis (1) comprises said attachment member (2) for the second metacarpal bone, an attachment member (3) with a screw-like part (5) for attachment by screwing into the first metacarpal bone and with an articulating ball element (6) as well as a corresponding articulating socket element (7), and said connecting member (16).

The present disclosure pertains to ionic polymer compositions, including semi- and fully interpenetrating polymer networks, methods of making such ionic polymer compositions, articles made from such ionic polymer compositions, and methods of making such articles and packaging for such articles.

A prosthesis for primary artrodhesis can be used for artroplasty and a prosthesis for artroplasty comprises members for artrodhesis. The prosthesis (1b) for primary artrodhesis comprises a locking member (33b) with an attachment portion (16b) which is insertable into a hole (8b) in a first attachment member (4b) of the prosthesis for location of the locking member therein, and a lockable member (34b) integral with a second attachment member (5b) of the prosthesis. The lockable member (34b) is configured for adjustable setting thereof relative to the locking member (33b) and for fixation thereof, in set position, to the locking member. Alternatively, the lockable member comprises an attachment portion which is insertable into a hole in the second attachment member for location of the lockable member therein. At the prosthesis for artroplasty, the hole in the first screw-like attachment member is partly configured to define a press fit with an attachment pin of a socket member and partly threaded to permit, after removal of the socket member, during artrodhesis, securing by screwing in the hole of the locking member for cooperation with a lockable member which is configured for adjustable setting thereof relative to the locking member and for fixation thereof, in set position, to the locking member.

Implantable orthopedic pain management devices are disclosed, including a body with a top surface, a bottom surface, and at least two substantially parallel surfaces, the two substantially parallel surfaces having substantially similar radii of curvature and are substantially trapezoidally shaped, the top surface having a top radius of curvature and the bottom surface having a bottom radius of curvature, the body being configured to be disposed in a joint such that the surfaces are configured to be in intermittent contact with bone surfaces of one or more bones comprising the joint, the body not being coupled to the one or more bones, and a peripheral protrusion disposed substantially at an intersection of at least two surfaces, the peripheral protrusion being formed with the body, substantially spherical, and configured to prevent expulsion of the body from the joint.

A prosthesis for primary artrodhesis can be used for artroplasty and a prosthesis for artroplasty comprises members for artrodhesis. The prosthesis (1b) for primary artrodhesis comprises a locking member (33b) with an attachment portion (16b) which is insertable into a hole (8b) in a first attachment member (4b) of the prosthesis for location of the locking member therein, and a lockable member (34b) integral with a second attachment member (5b) of the prosthesis. The lockable member (34b) is configured for adjustable setting thereof relative to the locking member (33b) and for fixation thereof, in set position, to the locking member. Alternatively, the lockable member comprises an attachment portion which is insertable into a hole in the second attachment member for location of the lockable member therein. At the prosthesis for artroplasty, the hole in the first screw-like attachment member is partly configured to define a press fit with an attachment pin of a socket member and partly threaded to permit, after removal of the socket member, during artrodhesis, securing by screwing in the hole of the locking member for cooperation with a lockable member which is configured for adjustable setting thereof relative to the locking member and for fixation thereof, in set position, to the locking member.

An articulation component (1, 100) is for a bone joint hemiarthroplasty implant having an intramedullary stem (50) with a socket (53). The articulation component has a proximal saddle (2, 110) for non-engaging abutment with a proximal bone and a ball (4, 104) for engaging in the stem socket (53). The saddle has a distally facing recessed surface (10, 110) for engagement with the stem proximally facing surface (55) to define limits of articulation, in one case a cone of motion of about 60 with minimal risk of socket dislocation. Also, the saddle has an enlarged lateral-most edge portion (11, 111, 211) on two diametrically opposed sides of the neck, for conformity with a patients' anatomy.

A prosthesis for primary artrodhesis can be used for artroplasty and a prosthesis for artroplasty comprises members for artrodhesis. The prosthesis (1b) for primary artrodhesis comprises a locking member (33b) with an attachment portion (16b) which is insertable into a hole (8b) in a first attachment member (4b) of the prosthesis for location of the locking member therein, and a lockable member (34b) integral with a second attachment member (5b) of the prosthesis. The lockable member (34b) is configured for adjustable setting thereof relative to the locking member (33b) and for fixation thereof, in set position, to the locking member. Alternatively, the lockable member comprises an attachment portion which is insertable into a hole in the second attachment member for location of the lockable member therein. At the prosthesis for artroplasty, the hole in the first screw-like attachment member is partly configured to define a press fit with an attachment pin of a socket member and partly threaded to permit, after removal of the socket member, during artrodhesis, securing by screwing in the hole of the locking member for cooperation with a lockable member which is configured for adjustable setting thereof relative to the locking member and for fixation thereof, in set position, to the locking member.

A prosthesis for primary artrodhesis can be used for artroplasty and a prosthesis for artroplasty comprises members for artrodhesis. The prosthesis (1b) for primary artrodhesis comprises a locking member (33b) with an attachment portion (16b) which is insertable into a hole (8b) in a first attachment member (4b) of the prosthesis for location of the locking member therein, and a lockable member (34b) integral with a second attachment member (5b) of the prosthesis. The lockable member (34b) is configured for adjustable setting thereof relative to the locking member (33b) and for fixation thereof, in set position, to the locking member. Alternatively, the lockable member comprises an attachment portion which is insertable into a hole in the second attachment member for location of the lockable member therein. At the prosthesis for artroplasty, the hole in the first screw-like attachment member is partly configured to define a press fit with an attachment pin of a socket member and partly threaded to permit, after removal of the socket member, during artrodhesis, securing by screwing in the hole of the locking member for cooperation with a lockable member which is configured for adjustable setting thereof relative to the locking member and for fixation thereof, in set position, to the locking member.

Techniques for implantable orthopedic pain management devices are disclosed, including incising an opening in a synovial capsule substantially surrounding a joint, using a first tool to form an enlarged opening in the synovial capsule, determining whether to modify the joint, the joint being modified using a second tool if a bone structure coupled to one or more bones is found within the joint and the bone structure is configured to limit articulation of the one or more bones when an implantable device is inserted into the synovial capsule and the joint, and inserting the implantable device into the synovial capsule through the enlarged opening, the implantable device being inserted into the joint using a third tool.

A set of tools for installation of a stem implant into a bone comprises a stem-shaped priming tool (1) having a distal tip (32) and a plurality of cutting teeth (31) along a length thereof and a plurality of stem-shaped broaches (2, 3, 4, 5, 6) of different size. Each of the broaches have a distal tip (32) and a plurality of cutting teeth (31) along a length thereof. The priming tool (1) is shorter than, has more cutting teeth (31) per unit length, and has a sharper distal tip (32) than the smallest broach.