An implant device used to replace and restore the function of the knee meniscus in a human. The compliant, yet resilient device is comprised of a biocompatible, non-degradable three-dimensional body comprised of at least a central body, a second structure, a third structure, and a coating. The device is concentrically aligned wherein the second structure is adjoined to the central body wherein the third structure is adjoined on the central body opposite of the second structure. The third structure further features a first and a second pulling element which is coupled to the central body and forms the outer periphery and major circumference of the device. The device is comprised of multiple components which provide tensile strength, compressive resilience, and attachment mechanisms for replacing the meniscus. Each structure is comprised of multiple surfaces which are further reinforced, separated, and connected by an individual plurality of vertical elements. The implantable device further features a surface coating on the surface of the central body.

A workstation having a pair of posts on either side of a clamping plate where a donor bone may be placed on sequentially cut in three separate cutting paths. Cutting gates are attached to the posts and used to provide cutting paths that can be precisely oriented with respect to the meniscus of the donor bone part using visual alignment without any manual measurements. The graft is affixed to a machining clamp and shaved to appropriately shape the sides and form a radius on the bottom of the graft. A tibia is then prepared by using a drill guide to form a pilot hole and then to drill out a large hole for the graft. The drilled hole is expanded and shaped using a rod guide and chisel and then a rasp. The shaped graft may then be implanted into the shaped hole and sutured in place.

A composite joint implant device replaces or repairs damaged meniscus tissue in an animal or human. In one embodiment, a composite joint implant comprises a polymeric body which is reinforced with a pre-formed engineered ligature mechanism. The ligature reinforces the polymeric body around the circumference and is used for attaching the device within an animal or human body. The ligature mechanism internally supports the transmission of vertical loads into tensile stresses. The ligature mechanism can be coated with a compatible material to promote integration with the polymeric body and coated with an encapsulation material.

A method of repairing and/or stabilizing a joint by administering mesenchymal stem cells to the joint. Such a method provides for the regeneration of cartilaginous tissue in the joint, including meniscal tissue.

The disclosure is directed to a resilient implant for implantation into human or animal joints to act as a cushion allowing for renewed joint motion. The implant endures variable joint forces and cyclic loads while reducing pain and improving function after injury or disease to repair, reconstruct, and regenerate joint integrity. The implant is deployed in a prepared debrided joint space, secured to at least one of the joint bones and expanded in the space, molding to surrounding structures with sufficient stability to avoid extrusion or dislocation. The implant has opposing walls that move in varied directions, and an inner space filled with suitable filler to accommodate motions which mimic or approximate normal joint motion. The implant pads the damaged joint surfaces, restores cushioning immediately and may be employed to restore cartilage to normal by delivering regenerative cells.

A method for performing a surgical procedure on a patient using a robotic system and a navigation system. The robotic system includes a cutting tool. The navigation system has at least one locating device to track a portion of the patient during the surgical procedure. The navigation system provides information as to a position of the portion of the patient. An optical cutting guide is projected onto the portion of the patient to enable cutting of the portion of the patient with the cutting tool of the robotic system while the optical cutting guide is projected onto the portion of the patient.

This disclosure is directed to a resilient interpositional arthroplasty implant for application into a joint to pad cartilage defects, cushion, and replace or restore the articular surface, which may preserve joint integrity, reduce pain and improve function. The implant may endure variable joint compressive and shear forces and cyclic loads. The implant may repair, reconstruct, and regenerate joint anatomy, and thereby improve upon joint replacement alternatives. The walls of this invention may capture, distribute and hold living cells until aggregation and hyaline cartilage regrowth occurs. The implant may be deployed into debrided joint spaces, molding and conforming to surrounding structures with sufficient stability so as to enable immediate limb use after outpatient surgery. Appendages of the implant may repair or reconstruct tendons or ligaments, and menisci by interpositional inflatable or compliant polymer arthroplasties that promote anatomic joint motion.

The disclosure provides a meniscus substitute and a knee joint prosthesis with the meniscus substitute. The meniscus substitute includes: a base body, disposed on a tibial plateau or a tibial plateau prosthesis of a tibia; a polymer joint body, disposed on the base body; and a bone screw, disposed in the tibia in a penetration manner and connected with the base body.

The present disclosure pertains to ionic polymer compositions, including semi- and fully interpenetrating polymer networks, methods of making such ionic polymer compositions, articles made from such ionic polymer compositions, and methods of making such articles and packaging for such articles.

Methods of selecting and implanting prosthetic devices for use as a replacement meniscus are disclosed. The selection methods include a pre-implantation selection method and a during-implantation selection method. The pre-implantation selection method includes a direct geometrical matching process, a correlation parameters-based matching process, and a finite element-based matching process. The implant identified by the pre-implantation selection method is then confirmed to be a suitable implant in the during-implantation selection method. Methods of implanting meniscus prosthetic devices are also disclosed.