An artificial joint cup, in particular a hip joint cup, for implanting in a cavity in a bone. The joint cup is, in particular, substantially in the form of a spherical dome cup, having a convex outer surface and a concave inner surface. In addition, the joint cup comprises an outer diameter and an inner diameter. The ratio of the difference between the outer diameter and the inner diameter, in relation to the outer diameter, is in a range of between 0.5 and 0.07, preferably between 0.3 and 0.075, particularly preferably between 0.2 and 0.1. The joint cup is manufactured from a ceramic material, and the convex outer surface has a micro-structuring.

This invention relates to an intervertebral motion disc having two motion surfaces and. wherein the radius of the upper articulation surface of the core member is greater than the radius of the lower articulation surface of the core member, and wherein the first articulation surface of the core member is spherical and the second articulation surface of the core member is curved and non-spherical.

The present invention is directed to a surgical implant for the fusion of two adjacent vertebrae with an upper plane for contacting an upper vertebral body and a lower plane for contacting a lower vertebral body and a tubular structure, wherein the tubular structure is formed by a plurality of tubes running from the upper plane to the lower plane and in substantially horizontal direction throughout one side of the surgical implant straight to the opposite side of the surgical implant. This tubular structure has the advantage that the formation and ingrowth of new bone is promoted and advantaged and that the degree of formation and ingrowth of new bone is detectable by X-ray measurements.

This invention relates to an intervertebral motion disc having two motion surfaces and. wherein the radius of the upper articulation surface of the core member is greater than the radius of the lower articulation surface of the core member, and wherein the first articulation surface of the core member is spherical and the second articulation surface of the core member is curved and non-spherical.

A facet joint replacement system includes an inferior implant with an inferior articular surface, a superior implant with a superior articular surface, and an optional crossbar. The inferior implant and the superior implant are each polyaxially adjustably connected to fixation elements which anchor the implants to adjacent vertebrae. The optional crossbar may be polyaxially adjustably connected to bilateral implants. The system components may be provided in kits which provide components of various sizes and shapes. A set of surgical instruments may facilitate implantation of the facet joint replacement system by providing tools for bone preparation, trialing, implant insertion, implant alignment, and lock-out of modular interconnections.

A prosthetic system that includes a prosthetic implant and a support structure secured to an inner surface of the cavity in the end of the 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 channel by an adhesive. The stem of the prosthesis beyond the channel may be cemented or uncemented. The support structure may have an approximately funnel shape. The support structure may be a hollow porous cylindrical sleeve. The support structure may comprise a pair of partially hemispherical components arranged in spaced apart relationship thereby defining a channel between the pair of components. The support structure may comprise a plurality of pedestals secured to the inner surface of the cavity of the bone.

An orthopedic implant in the form of a hip joint endoprosthesis consists of a head, which is set onto an anchoring shaft, which itself is insertable into a bone and anchorable therein. The head comprises an inner blind-hole-type recess, and the anchoring shaft is provided with a tenon for inserting into this recess. A sleeve provided with an approximately central through-bore is soldered into the recess of the head, via which sleeve the head is setable or mountable on the tenon. The head consists of a ceramic based on zirconium dioxide, aluminum oxide or a mixed ceramic, while the sleeve consists of a high strength titanium material. The connection between the head and the sleeve is produced by a silicate ceramic solder that solidifies or hardens in a ceramic firing, as well as by a subsequently applied glass solder, of which the excess can exit via the through-bore into a hollow space existing between the sleeve and the tenon. Both the recess of the head as well as the metallic sleeve are embodied approximately cylinder-shaped.

An elongate inserter has a distal end releasably connected to an expandable device for expanding body tissue and a proximal end including a trigger actuator. The expandable device comprises a superior endplate and an inferior endplate that are movable in an expansion direction relative to each other between opposing tissue surfaces of a body. The inserter includes a lifting platform comprising ramp surfaces that upon operation of the trigger actuator cooperatively engage complementary surfaces of expansion structure within the device to cause the superior and inferior endplates to move relatively away from each other. A driver is supported by the inserter for pushing an insert between the superior and inferior endplates after expansion of the device.

An expandable interbody device for placement between adjacent vertebrae having an upper structure, a lower structure and a screw mechanism, wherein actuation of the screw mechanism moves the upper and lower structures between a collapsed configuration and an expanded configuration. A deployment tool couples to the expandable interbody device for positioning the device between adjacent vertebrae, actuating the screw mechanism and delivering a material to a chamber of the expandable interbody device.

An endoprosthetic component which is set up in the implanted state to penetrate in a controlled manner into adjoining bone material.