An acetabular cage or device (100) is disclosed. In one embodiment, the acetabular cage includes a cup portion (110) configured for implantation in an acetabulum and a flange (120) extending from the cup portion. The flange including a first, bone contacting surface (126) configured to face bony tissue surrounding the acetabulum when the cup portion is implanted into the acetabulum and a second, top surface (127) opposite the first surface. The flange includes a flexible portion (130) and a fixation portion (122), the fixation portion including one or more fixation features (124) configured to facilitate fixation of the flange to the bony tissue surrounding the acetabulum. The flexible portion is arranged and configured to enable the flange, and hence the fixation portion, to move relative to the cup portion to facilitate placement of the flange relative to the bony tissue.

The disclosure provides a cartilage substitute, which includes at least one cartilage unit, the cartilage unit including: a base, including a subcutaneous layer portion forming contact friction with a corresponding skeleton, a deep layer area portion contacting with a target skeleton and an intermediate layer portion provided between the subcutaneous layer portion and the deep layer area portion. A fluid storage cavity is disposed in the subcutaneous layer portion. A first communicating passage is disposed in the subcutaneous layer portion. A second communicating passage is disposed in the intermediate layer portion, a third communicating passage is disposed in the deep layer area portion. The fluid storage cavity, the second communicating passage and the third communicating passage are disposed to gradually increase hardness of the subcutaneous layer portion, the intermediate layer portion and the deep layer area portion.

A bone structural device including a plurality of bone structural segments, wherein adjacent bone structural segments are pivotally connected to one another about a pivot axis, and the bone structural segments are expandable in height, which is in a direction generally parallel to the pivot axis.

An implant including a first body member and a second body member and a first bone contacting element extending from the first body member to the second body member. The first bone contacting element may have a spiral configuration forming a plurality of arched members including at least two arched members extending substantially parallel to and offset with respect to one another.

A lumbar interbody fusion device includes a first wing, a second wing, and a bridge. The bridge has an arcuate resting shape and include a first end connected to the first wing, a second end connected to the second wing, and at least one aperture extending through the bridge in a radial direction relative to the arcuate resting shape of the bridge. The bridge is elastically deformable such that a distance between the first wing and the second wing may vary according to elastic deformation of the bridge.

An acetabular cage or device is disclosed. In one embodiment, the acetabular cage includes a cup portion configured for implantation in an acetabulum and a flange extending from the cup portion. The flange including a first, bone contacting surface configured to face bony tissue surrounding the acetabulum when the cup portion is implanted into the acetabulum and a second, top surface opposite the first surface. The flange includes a flexible portion and a fixation portion, the fixation portion including one or more fixation features configured to facilitate fixation of the flange to the bony tissue surrounding the acetabulum. The flexible portion is arranged and configured to enable the flange, and hence the fixation portion, to move relative to the cup portion to facilitate placement of the flange relative to the bony tissue.

An acetabular cage or device (100) is disclosed. In one embodiment, the acetabular cage includes a cup portion (110) configured for implantation in an acetabulum and a flange (120) extending from the cup portion. The flange including a first, bone contacting surface (126) configured to face bony tissue surrounding the acetabulum when the cup portion is implanted into the acetabulum and a second, top surface (127) opposite the first surface. The flange includes a flexible portion (130) and a fixation portion (122), the fixation portion including one or more fixation features (124) configured to facilitate fixation of the flange to the bony tissue surrounding the acetabulum. The flexible portion is arranged and configured to enable the flange, and hence the fixation portion, to move relative to the cup portion to facilitate placement of the flange relative to the bony tissue.

A lumbar interbody fusion device includes a first wing, a second wing, and a bridge. The bridge has an arcuate resting shape and include a first end connected to the first wing, a second end connected to the second wing, and at least one aperture extending through the bridge in a radial direction relative to the arcuate resting shape of the bridge. The bridge is elastically deformable such that a distance between the first wing and the second wing may vary according to elastic deformation of the bridge.

A bone structural device including a plurality of bone structural segments, wherein adjacent bone structural segments are pivotally connected to one another about a pivot axis, and the bone structural segments are expandable in height, which is in a direction generally parallel to the pivot axis.

Coiled spinal implants for disc, vertebral body, and spinal motion segment replacement or reconstruction comprise a plurality of loops and spaces between the loops, with the loops formed of a hollow material and having a plurality of apertures or a longitudinal gap that extend(s) through the sidewalls of the loops and into the hollow center. The coiled implants include one or more balloons within the hollow center, the spaces between the coil loops, and/or within the central void that the coil surrounds. Filling the balloon expands the loops and thereby increases the height of the coil. Bone graft material or bone cement may be deployed from the apertures or gap.