Systems for joint arthroplasty include prostheses which are secured to bone with sliding anchors. Examples include unicondylar and bicondylar knee prostheses for hemi-arthroplasty and total arthroplasty. Instruments guide the anchors into proper engagement with the prosthetic components. Methods of using the prostheses and instruments are disclosed.

A device is disclosed that includes a bone stent positioned within a bony access channel formed within a vertebra. The bony access channel may extends from an outer end of the vertebra through an endplate. The device includes an end cap attached to a proximal end portion of the bone stent and is configured to, post-operatively, open to allow a reintroduction of a material to a spinal intradiscal space or intervertebral disc and to seal access to the spinal intradiscal space or the intervertebral disc after the reintroduction of the material.

The present application generally relates to orthopedic systems, and in particular, to systems including independent plates and spacers. A plating system can include a spacer and a plate that is independent from the spacer. A number of locking mechanisms can be provided to secure the plate to the spacer. In some cases, the spacer includes a pair of notches that extend on an outer surface of the spacer. The plate can include a pair of lateral extensions that can engage the notches to secure the plate to the spacer. In other cases, the spacer includes an opening including a pair of inlets. The plate can include an enclosed posterior extension that can be received in the pair of inlets to secure the plate to the spacer.

A biocompatible construction adapted for use in joint surgeries. Among other things, the joint implant has an anterior cutting edge and a rotatable cutter distinct from the cutting edge. The rotatable cutter allows for graduated cutting of biological tissue or structure.

A trial neck (30) and a method for trialling a neck of an orthopedic implant in a hip replacement procedure. The method includes inserting a broach (10) into a medullary canal of a femur and connecting a distal end of a trial neck to a proximal end (12) of the broach. The trial neck includes a proximal end connectable to a trial head. The trial neck includes a body portion extending along a neck axis (5) of the trial neck between the distal end and the proximal end. The proximal end includes a male connector for connection to a corresponding female connector of a trial head. The male connector includes a plurality of connection members (34A, 34B) extending parallel to the neck axis. The connection members are separated by one or more elongate slots (50) including at least one kink (52) forming an interlock between the connection members separated by that slot. The connection members are resiliently deflectable.

An implant may include a body having a first blade having a first retracted position in the body and a first extended position where the first blade extends outwardly from the body, a second extendable blade, and a blade actuating member configured to translate through the body in directions parallel to the lateral axis. When the blade actuating member is moved in a first direction along the lateral axis, the first blade moves towards the first extended position; and in the first extended position, the first blade extends from the superior surface at a first non-zero angle with respect to the superior-inferior axis; and the second blade moves towards a second extended position in which the second blade extends from the inferior surface at a second non-zero angle with respect to the superior-inferior axis.

An intervertebral fusion mechanism includes a disc cage having a scaffolding structure to support bone growth and a porous cancellous bone feeder anchor, connected to the disc cage, for providing a biological material transference interface between cancellous bone and the disc cage.

A device is disclosed that includes a bone stent positioned within a bony access channel formed within a vertebra. The bony access channel may extends from an outer end of the vertebra through an endplate. The device includes an end cap attached to a proximal end portion of the bone stent and is configured to, post-operatively, open to allow a reintroduction of a material to a spinal intradiscal space or intervertebral disc and to seal access to the spinal intradiscal space or the intervertebral disc after the reintroduction of the material.

The present invention provides an implant having an enhanced initial fixation force, and more particularly, to an implant that may maintain a fixed state without relative movement with respect to vertebral bodies until fusion is completely performed. The implant includes: an implant body inserted between vertebral bodies; and an injection unit installed in the implant body, and configured to inject bone cement into the vertebral bodies.

The present application generally relates to orthopedic systems, and in particular, to systems including independent plates and spacers. A plating system can include a spacer and a plate that is independent from the spacer. A number of locking mechanisms can be provided to secure the plate to the spacer. In some cases, the spacer includes a pair of notches that extend on an outer surface of the spacer. The plate can include a pair of lateral extensions that can engage the notches to secure the plate to the spacer. In other cases, the spacer includes an opening including a pair of inlets. The plate can include an enclosed posterior extension that can be received in the pair of inlets to secure the plate to the spacer.