Provided herein are biomimetic osteochondral implants that are generally useful for the at least partial resurfacing of damaged cartilage within a joint. The implants are constructed to have a modular, layered structure in which the physical properties (e.g., stiffness and lubricity) or dimensions of each layer can be adjusted (e.g., by using the appropriate material and controlling the thickness thereof) based on the anatomy to be replaced. For example, the material and or thicknesses of the layers can be selected to approximate the physical properties and/or dimensions of cartilage (and, optionally, chondral and subchondral bone). Also provided herein are methods of treatment involving the use of said biomimetic osteochondral implants to repair an osteochondral defect in a joint.

A system for attachment of a device to a bone is provided. The system includes an internal axial rod with a proximal and distal end that is configured to be inserted and secured into a bone cavity's distal end. The system can also include an internal-external transfer rod with a proximal and distal end mounted into the distal end of the axial rod and a central channel extending through the transfer rod from the proximal end to the distal end and a plurality of attachment rings for attaching at least one tissue or muscle group to the transfer rod. The system also includes a bio-compatible and bio-occlusive artificial membranes (BIOCAMS) lamina, wherein the lamina includes either a polyetheretherketone (PEEK) mesh, a biocompatible polymer, a carbon fiber polymer, an artificial tissue polymer, molded donor tissue, allogenic tissue, a collagen/hyaluronic acid-based tissue, or connective tissue biosynthetic substrate material suitable as webbing.

A system for attachment of a device to a bone is provided. The system includes an internal axial rod with a proximal and distal end that is configured to be inserted and secured into a bone cavity’s distal end. The system can also include an internal-external transfer rod with a proximal and distal end mounted into the distal end of the axial rod and a central channel extending through the transfer rod from the proximal end to the distal end and a plurality of attachment rings for attaching at least one tissue or muscle group to the transfer rod. The system also includes a bio-compatible and bio-occlusive artificial membranes (BIOCAMS) lamina, wherein the lamina includes either a polyetheretherketone (PEEK) mesh, a biocompatible polymer, a carbon fiber polymer, an artificial tissue polymer, molded donor tissue, allogenic tissue, a collagen/hyaluronic acid-based tissue, or connective tissue biosynthetic substrate material suitable as webbing.

Provided herein are biomimetic osteochondral implants that are generally useful for the at least partial resurfacing of damaged cartilage within a joint. The implants are constructed to have a modular, layered structure in which the physical properties (e.g., stiffness and lubricity) or dimensions of each layer can be adjusted (e.g., by using the appropriate material and controlling the thickness thereof) based on the anatomy to be replaced. For example, the material and or thicknesses of the layers can be selected to approximate the physical properties and/or dimensions of cartilage (and, optionally, chondral and subchondral bone). Also provided herein are methods of treatment involving the use of said biomimetic osteochondral implants to repair an osteochondral defect in a joint.

A system for attachment of a device to a bone is provided. The system includes an internal axial rod with a proximal and distal end that is configured to be inserted and secured into a bone cavity's distal end. The system can also include an internal-external transfer rod with a proximal and distal end mounted into the distal end of the axial rod and a central channel extending through the transfer rod from the proximal end to the distal end and a plurality of attachment rings for attaching at least one tissue or muscle group to the transfer rod. The system also includes a bio-compatible and bio-occlusive artificial membranes (BIOCAMS) lamina, wherein the lamina includes either a polyetheretherketone (PEEK) mesh, a biocompatible polymer, a carbon fiber polymer, an artificial tissue polymer, molded donor tissue, allogenic tissue, a collagen/hyaluronic acid-based tissue, or connective tissue biosynthetic substrate material suitable as webbing.

The present invention discloses a semi-radial head prosthesis for matching to a non-fractured part of a bone. The prosthesis comprises a prosthesis head (3) matching to a radial head of the non-fractured part, the prosthesis head having a fractured surface, the prosthesis head (3) is jointed with the non-fractured part (2) to form an intact radial head. In the present invention, when the partial articular surface of the radial head is fractured, it is unnecessary to remove the entire radial head. Instead, the radial head of the fractured part is replaced with a prosthesis head and the radial head of the non-fractured part is retained. The two parties are combined to form an intact radial head. This minimizes iatrogenic injuries to the patients, and is good for the joint intactness and joint stability.

A radial head prosthesis for implantation in a distal radius. The implant includes a head portion and a stem portion. The stem portion has a cylindrical shaft and tapered tip. The head portion includes a recess for engagement with the stem portion. The head portion includes a first bearing surface for articulation with a humerus, and a second bearing surface for articulation with an ulna. The second bearing surface includes at least one concave and one convex portion immediately adjacent one another.

A method for performing surgery on a target bone with guidance from an adjacent bone adjacent to the target bone, the method using a cutting guide including a mounting portion, a cut guiding portion and a linking portion extending therebetween, the method comprising: mounting the mounting portion to the adjacent bone and positioning the cut guiding portion adjacent to the target bone, wherein the mounting portion and the cut guiding portion are positioned in a predetermined spatial relationship relative respectively to the adjacent and target bones; and making a cut in the target bone using a saw, the saw being guided along a predetermined path by the cut guiding portion.

A limb sparring system for replacing a portion of a radius, the radius being adjacent to an ulna, the system comprising a cutting guide including a cut guiding portion for guiding a saw when making a predetermined cut in the radius to excise the portion of the radius, an opposed ulnar mounting portion mountable to the ulna, and a linking portion extending therebetween; and an endoprosthesis configured for replacing the portion of the radius after the portion of the radius has been excised. When the cutting guide is operatively mounted to the radius and ulna, the cut guiding portion and the ulnar mounting portion engage respectively the radius and the ulna in a predetermined spatial relationship relative thereto.

In one embodiment, the present invention provides a talar implant, comprising: a. a superior surface, defined by an arc having at least one first radius; b. an inferior surface, defined by an arc having at least one second radius, c. a lateral side; d. a medial side; e. a posterior portion having a first width; and f an anterior portion having a second width; wherein the implant is configured to restore a joint tension between a tibio-talar joint in a neutral position, wherein the superior surface is separated from the inferior surface by a thickness, defining a height of the medial and lateral sides, wherein the at least one first radius is smaller than the at least one second radius, wherein the center of the arc having at least one first radius is offset from the center of the arc having at least one second radius in at least one plane of the talar implant selected from the group consisting of: a superior/inferior plane, an anterior/posterior plane, and a medial/lateral plane, wherein the inferior surface is configured to attach to a superior surface of the talus,and wherein the anterior portion further comprises an extension configured to provide support.