An acetabular hip implant includes a plurality of rings secured to an acetabular shell component. A method of fabricating a customized, patient-specific version of such an implant is also disclosed.

Apparatus and methods for providing spinal percutaneous delivery of an implant that can rigidly fixate the spinous process of a first superior bone and a second inferior bone of a functional spinal unit. In one aspect, the device comprises two bone abutment members connected via an interconnecting member. In another aspect, the method comprises implanting at least two spinal implant apparatus within a target disc space via an implantation apparatus. In another aspect, a placement instrument comprising an implant delivery segment, an anchor segment, and an articulating arm is disclosed.

A spinal fixation device includes an outer housing and an end plate assembly coupled with the outer housing. The outer housing defines an aperture and a longitudinal axis. At least a portion of the end plate assembly is slidably received within the outer housing. The end plate assembly includes a first end plate configured to engage a vertebral body, wherein the end plate assembly is selectively movable between a first position in which the first end plate is spaced apart from the outer housing and a second position in which the first end plate is adjacent the outer housing. Further, the first end plate is selectively adjustable to an angular orientation of a plurality of angular orientations with respect to the longitudinal axis of the outer housing.

An intervertebral spacer may include a fastener channel configured to receive a fastener, a locking member channel, and a locking member. The locking member channel may include an inner wall and one or more inner wall engagement features. The locking member may include an anti-backout member, a collet retainable within the locking member channel, and one or more collet engagement features. The locking member may be rotatable within the locking member channel between an unlocked position and a locked position. The one or more collet engagement features may engage the one or more inner wall engagement features in order to retain the locking member in either the unlocked position or the locked position, such that the anti-backout member may selectively obstruct the fastener channel and prevent the fastener from backing out of the fastener channel.

An intervertebral spacer assembly may include a first intervertebral spacer with a superior surface configured to engage a superior vertebral body, an inferior surface configured to engage an inferior vertebral body, and a proximal surface with a first fastener channel. The assembly may further include a first fastener and a locking member with a first anti-backout member. The first intervertebral spacer or the locking member may have a locking member channel. The other may have a compressible collet insertable into the locking member channel to couple the locking member to the first intervertebral spacer such that the locking member is rotatable relative to the first intervertebral spacer between an unlocked position in which the first anti-backout member does not obstruct the first fastener channel, and a locked position in which the first anti-backout member obstructs the first fastener channel to retain the first fastener in the first fastener channel.

An implant stabilizes two adjacent bones of a joint, while enabling a natural kinematic relative movement of the bones. Support components are connected to each bone of the joint, and a flexible core is interposed between them. The core and at least one of the support components are provided with a smooth sliding surface upon which the core and support component may slide relative to each other, enabling a corresponding movement of the bones. The surfaces may have a mating curvature, to mimic a natural movement of the joint. The core is resilient, and may bend or compress, enabling the bones to move towards each other, and or to bend relative to each other.

Apparatus and methods for providing spinal percutaneous delivery of an implant that can rigidly fixate the spinous process of a first superior bone and a second inferior bone of a functional spinal unit. In one aspect, the device comprises two bone abutment members connected via an interconnecting member. In another aspect, the method comprises implanting at least two spinal implant apparatus within a target disc space via an implantation apparatus. In another aspect, a placement instrument comprising an implant delivery segment, an anchor segment, and an articulating arm is disclosed.

The invention relates to an ankle prosthesis (1) comprising a talar implant (2) designed to be implanted in or on the talus (3), a tibial implant (4) designed to be implanted in or on the tibia (5), and an intermediate implant (6) designed to be interposed between the tibial implant and the talar implant, said intermediate implant (6) being designed to be mounted to move relative to said talar implant (2) at a contact interface (7) in order to allow the ankle to move, said ankle prosthesis (1) being characterised in that it is provided with configurable coupling means (10) designed to enable the intermediate implant (6) to be arranged relative to the tibial implant (4) in a specific configuration chosen from among a plurality of possible configurations.

An intervertebral spacer assembly may include a first intervertebral spacer with a superior surface configured to engage a superior vertebral body, an inferior surface configured to engage an inferior vertebral body, and a proximal surface with a first fastener channel. The assembly may further include a first fastener and a locking member with a first anti-backout member. The first intervertebral spacer or the locking member may have a locking member channel. The other may have a compressible collet insertable into the locking member channel to couple the locking member to the first intervertebral spacer such that the locking member is rotatable relative to the first intervertebral spacer between an unlocked position in which the first anti-backout member does not obstruct the first fastener channel, and a locked position in which the first anti-backout member obstructs the first fastener channel to retain the first fastener in the first fastener channel.

An artificial hip joint stem is used to replace the damaged femoral head or acetabulum and includes a stem body having a head fixing part, which fixes a head, and an operating space horizontally opened at the upper side thereof. A head insertion hole connects to the operating space. A screw part is inserted into the head insertion hole. An operation converting part is inserted into the operating space to vertically move by the screw part when the operation converting part is connected to the screw part. A fixing bracket is inserted into the operating space such that the screw part is fixed to rotate without changing the depth thereof. A variable operating part is inserted into a supporting surface of the stem body to adjust a horizontal width by means of the operation converting part. A movable pin fixes the variable operating part to the operation converting part.