An information processing apparatus includes a controller that determines the height at which to fix a cup of an artificial hip joint in a patient in accordance with the femoral head center on the contralateral side opposite from the affected hip joint of the patient, a teardrop lower edge of a hip joint of the patient, and the CE angle of the affected hip joint of the patient.

A prosthetic system that includes a prosthetic implant and a support structure secured to an inner surface of a cavity of a bone is disclosed. The support structure defines a channel that extends through the length of the support structure. The prosthetic implant is received in the channel, and a portion of the prosthetic implant is secured to an inner surface of the support structure by an adhesive. The support structure may comprise a pair of partially hemispherical components arranged in spaced apart relationship thereby defining the channel between the pair of components.

A medical implant includes a body and an identification assembly. The body includes a first material that is biocompatible, an inner portion, and an external surface made form the first material. The external surface completely contains the interior portion of the body such that the external surface is the only portion of the body exposed to an external environment. The identification assembly is fixed relative to the body. The identification assembly includes a radiopaque material forming a datamatrix. The identification assembly stores a readable data associated with the medical implant. The identification assembly may transfer the readable data to a scanning system.

An apparatus, system, and method may be used to replace a natural or artificial articular surface of a joint, and to repair a bone that is associated with the joint. In some embodiments, the apparatus, system, and method may include a joint replacement prosthesis with a prosthetic articular surface, a support structure securable to the bone, and a first attachment interface. The system may also include a bone plate with a bone engagement surface securable to the bone on either side of a fracture formed in the bone, or a damaged area of the bone. The bone plate may include a second attachment interface that is attachable to the first attachment interface of the joint replacement prosthesis in order to couple the bone plate to the joint replacement prosthesis.

Described is a mould (1) for making a temporary prosthetic component for a knee in an operating room comprising: a first half-mould (10); a second half-mould (20) which can be coupled to the first half-mould (10) for forming a moulding chamber (C) for a temporary prosthetic component made of medical cement; and elements (30) for fixing the first half-mould (10) to the second half-mould (20).

Each fixing element (30) has a rod (31) configured for connecting the first half-mould (10) to the second half-mould (20) and defining a weakness neck (32) configured to allow a facilitated breakage of the rod (31).

Apparatus and Method for Hip Surgery. An adjustable trial femoral head (400) for assessing anteversion of an acetabular cup relative to a pelvis of a patient are described. The adjustable trial femoral head comprises a spherical body (402) having a bore extending along a polar axis of the spherical body and configured to receive a free end of a femoral neck. A visual alignment guide (420) is mounted on the at least partially spherical body and the orientation of the visual alignment guide relative to the spherical body is adjustable.

An orthopedic prosthesis includes a proximal member which internally accommodates the major motion of a patient, e.g., during walking, thereby reducing wear against a cup or liner. A distal member may be utilized which rotates within a proximal member about an axis aligned with the major motion of the patient. The orthopedic prosthesis may also include a head and neck, the neck being rotatably mounted within the head, the head being rotatably mounted within the acetabulum region of a patient.

A device, for example a medical implant, and a method of making the same, the device having a metal or metal alloy substrate, for example cobalt chrome, and a diffusion hardened metallic surface, for example a plasma carburized surface, contacting a non-diffusion hardened surface or a diffusion hardened surface having a diffusion hardening species different from that of the opposing surface.

A medical device for implantation in a hip joint of a patient is provided. The medical device comprising a first piece being adapted to be fixated to the femoral bone and a second piece adapted to be fixated to the pelvic bone. The medical device further comprises a releasing which in a first state is adapted to hold said first piece attached to said second piece, and in a second state release said first piece from said second piece. The releasing member is adapted to change from said first state to said second state when a predetermined strain is placed on said releasing member by the connection with the first or second piece. The medical device further comprises a calibration member for calibrating the pre-determined strain required for said releasing member to change from said first state to said second state.

An orthopaedic implant can replace a joint in a patient. The orthopaedic implant includes a first component having a first component surface and a second component having a second component surface. The first component surface and the second component surface mate at an interface. The first component surface includes a metal substrate, a nanotextured surface, a ceramic coating, and a transition zone. The nanotextured surface is disposed directly upon the metal substrate and has surface features in a size of 10.sup.9 meters. The ceramic coating conforms to the nanotextured surface and includes a plurality of bio-active sites configured to attract and retain calcium and phosphorous cations. The transition zone is disposed between the metal substrate and the ceramic coating. The transition zone includes a concentration gradient transitioning from the metal substrate to the ceramic coating and there is no distinct interface between the metal substrate and the ceramic coating.