Certain disclosed examples provide methods for strengthening, reinforcing, and/or stimulating repair of residual patella bone to be resurfaced. Also provided in some examples are devices associated with the methods. These methods and devices may be utilized during or following total knee replacement (TKR) or total knee arthroscopy (TKA).

A prosthetic joint includes: (a) a first member comprising rigid material and having a perimeter flange defined by an undercut groove, the flange defining a wear-resistant first contact surface having a protruding rim; (b) a second member comprising rigid material and having a perimeter flange defined by an undercut groove, the flange defining a wear-resistant, second contact surface having a protruding rim; and (c) a third member comprising rigid material positioned between the first and second members, the third member defining opposed wear-resistant third and fourth contact surfaces; (d) wherein the first and second contact surfaces bear against the third and fourth contact surfaces, to transfer loads through the member, while allowing pivoting motion between the first and second members; (e) wherein the flanges can deform elastically such that the first and second contact surfaces conform to the third and fourth contact surfaces.

One aspect relates to an augmentation device comprising an annular cone surrounding a channel extending through the cone from a proximal cone end to a distal cone end of the cone. One aspect further relates to an augmentation system comprising such an augmentation device and an applicator, as well as an implantation method of an augmentation device using such an augmentation system.

The present application relates to a facet joint prosthesis comprising a first component having a first disc with a first outer face for engagement of a first bone. The first outer face has an opposed first inner face, which includes a first post connecting said first disc to a tongue. The facet joint prosthesis further comprises a second component having a second disc with a second outer surface for engagement with a second bone. The second outer surface has an opposed second inner face, which comprises a bridge located near the periphery of said second disc. Said bridge connects the second disc with a third disc. The third disc comprises a pocket. Insertion of said tongue into said pocket and rotation of said tongue relative to said pocket results in a locking of said tongue between said second disc and said third disc.

A medical product, preferably for use in treating, in particular filling and/or closing a bone cavity, wherein the product comprises a plurality of interconnected members, wherein each member has a peripheral boundary and the boundaries of adjacent members engage with one another. And a method for producing a medical product, preferably for use in treating, in particular filling and/or closing a bone cavity, wherein the product comprises a plurality of interconnected members, wherein each member has a peripheral boundary and the boundaries of adjacent members engage with one another.

An interbody implant system for use in the spine includes a base comprising two or more bone contacting surfaces, at least one recess in at least one of the two or more bone contacting surfaces, the recess configured for containing a tooth, a deployable tooth to provide fixation between the base and the anatomy of a subject, a break-away bridge between the tooth and the base for providing a first relative position between the tooth and the base, and a locking mechanism for providing a second relative position between the tooth and the base.

An expandable interbody with a modular endplate has an outer column, an inner column threadedly coupled and translatable relative to the outer column along the longitudinal axis, and an expansion ring to adjust a body length of the expandable interbody. The expansion ring has a plurality of teeth, and the outer column has at least one arm for engaging a tooth of the plurality of teeth to lock the expansion ring. The inner column and/or outer column can include a connector for connection to a modular endplate that has a substantially hollow core. The modular endplate includes a plate with a set screw entrapped therein. The modular endplate has an aperture to receive the connector of the inner and/or outer column.

Disclosed herein are expandable interbodies with modular endplates. An expandable interbody has an outer column, an inner column threadedly coupled and translatable relative to the outer column along the longitudinal axis, and an expansion ring to adjust a body length of the expandable interbody. The expansion ring has a plurality of teeth, and the outer column has at least one arm for engaging a tooth of the plurality of teeth to lock the expansion ring. The inner column and/or outer column can include a connector for connection to a modular endplate that has a substantially hollow core. The modular endplate includes a plate with a set screw entrapped therein. The modular endplate has an aperture to receive the connector of the inner and/or outer column.

Systems and methods for implantation of an intervertebral disc prosthesis include the prosthesis, a cartridge, and an instrument. Prior to implantation of the prosthesis, the cartridge receives and engages with the prosthesis to form an assembly. In addition, the instrument receives the assembly within an opening in an outer housing and engages the cartridge with a coupler of a locking shaft. Following implantation of the cartridge, actuation of a release driver causes an expansion bit of the release driver to engage release tabs on the cartridge to cause the cartridge to disengage from the prosthesis. The systems and methods optionally include a trial implant and/or an osteotome for trialing prior to implantation of the prosthesis.

An interbody implant system for use in the spine includes a base comprising two or more bone contacting surfaces, at least one recess in at least one of the two or more bone contacting surfaces, the recess configured for containing a tooth, a deployable tooth to provide fixation between the base and the anatomy of a subject, a break-away bridge between the tooth and the base for providing a first relative position between the tooth and the base, and a locking mechanism for providing a second relative position between the tooth and the base.