A tool for locating the insertion point of a radial component of a wrist prosthesis on a human distal radius bone, the guide comprising a handle; a guide face attached to the handle, the guide face being of a shape configured to engage an articular surface of the distal radius bone; the guide face comprising three visual cues respectively adapted to align with a palmar corner of a radio-ulnar joint located on the distal radius, a dorsal corner of a radio-ulnar joint located on the distal radius, and a tip of a radial styloid located on the distal radius; the guide face further comprising an opening designating the insertion point, the opening being at a designated location on the guide face relative to the visual cues; and the opening adapted to facilitate the marking of the insertion point on the articular surface of the distal radius bone.

A radiocarpal wrist joint replacement includes a radial member configured to be affixed to a portion of an end of the radial bone proximal to the wrist including a fixture to be affixed over a longitudinal aspect of the radial bone and a radial resurfacing plate having a substantially concave surface configured to be located at the end of the radial bone. A carpal capitate bone insert configured to be inserted and affixed into the carpal capitate bone. A bulbous component includes a first convex head and a second convex head, substantially opposite each other and connected by a neck between the first and the second convex head. The radial resurfacing plate of the radial member with the concave surface is configured to be operably coupled to the second convex head of the bulbous component so as to allow radial freedom of motion in the joint replacement.

A radiocarpal wrist joint replacement includes a radial member configured to be affixed to a portion of an end of the radial bone proximal to the wrist including a fixture to be affixed over a longitudinal aspect of the radial bone and a radial resurfacing plate having a substantially concave surface configured to be located at the end of the radial bone. A carpal capitate bone insert configured to be inserted and affixed into the carpal capitate bone. A bulbous component includes a first convex head and a second convex head, substantially opposite each other and connected by a neck between the first and the second convex head. The radial resurfacing plate of the radial member with the concave surface is configured to be operably coupled to the second convex head of the bulbous component so as to allow radial freedom of motion in the joint replacement.

Disclosed is a wrist prosthesis, and methods for implanting same, the prosthesis comprising an elongated radial component having two opposite sides, the first side comprising a stem and the second side comprising a concave dish; an elongated carpal component having two opposite sides, the first side comprising a stem, and the second side comprising a ball end; a lunate component having two opposite sides, the first side comprising a cavity adapted to receive said carpal component's ball end, and the second side comprising a convex surface adapted to engage said radial component's concave dish; wherein said lunate component freely rotates and swivels with respect to both of said carpal and radial components; wherein said stem of said carpal component is adapted for rigid engagement with one or more carpal and/or metatarsal bones; and wherein said stem of said radial component is adapted for rigid engagement with a radius bone.

An apparatus and method for the repair of disruptions between bones. The apparatus defines a combination of sleeves, strands and crimps are provided to secure the bones, using a dual sided drill guide to prepare the bones for installation of the apparatus, which is adjusted upon installation to suit the appropriate alignment and tension of the apparatus. The method includes the preparation of the bones, the installation of the apparatus and the adjustment of the apparatus to properly align and tension the apparatus for repair of the bone.

The present invention relates to a three-dimensional multiphasic synthetic tissue scaffold comprising first, second and third compartments, wherein: each said compartment comprises distinct microstructural, and/or chemical, and/or mechanical properties, and is connected with at least one other compartment of the scaffold via a continuous interface; the tissue scaffold is porous; and the external morphology of the tissue scaffold mimics that of a mammalian joint or a component thereof. The invention further relates to a method for producing the three dimensional multiphasic synthetic tissue scaffold using a polymeric material, the method comprising using a three-dimensional (3D) bioprinter to print the tissue scaffold by continuously deposit the polymeric material onto a platform until the tissue scaffold is produced in its entirety.

Disclosed is a wrist prosthesis, and methods for implanting same, the prosthesis comprising radial component having two sides, the first side comprising a stem and the second side comprising a concave dish; a carpal component having two sides, the first side comprising a stem, and the second side comprising a ball end, the ball end being connected to the carpal component through a neck, the neck being narrower than the diameter of the ball end; and a lunate component having two sides, the first side comprising a cavity adapted to receive said carpal component's ball end, and the second side comprising a convex surface adapted to engage said radial component's concave dish.

An apparatus and method for the repair of disruptions between bones. The apparatus defines a combination of sleeves, strands and crimps are provided to secure the bones, using a dual sided drill guide to prepare the bones for installation of the apparatus, which is adjusted upon installation to suit the appropriate alignment and tension of the apparatus. The method includes the preparation of the bones, the installation of the apparatus and the adjustment of the apparatus to properly align and tension the apparatus for repair of the bone.

A method for bone reconstruction includes aligning a first bone with a second bone using a plurality of guidewires to correct rotational deformity of the first and second bones. A first module of a targeting apparatus is positioned in proximity to the first bone. A tip of the first module is engaged with the first bone. A second module of the targeting apparatus is positioned in proximity to the second bone. A tip of the second module is engaged with the second bone. Alignment of the first module and the second module is secured. The alignment is verified using a guidewire, the guidewire wire is inserted through a passage extending through the second module. A length between the first bone and the second bone is determined using a depth gauge. An implant is selected based on the determined length for delivery along the passage extending through the second module.

A surgical implant for a proximal carpal row replacement surgery employs a scanned image of each of the scaphoid, lunate and triquetrum bones for generating a unitary, homogeneous model defining a fused shape for implantation as the proximal carpal row. The implant utilizes a contralateral image of healthy bones of the patient for generating the replacement model, and employs shrink-wrap and smoothing processing to generate the unitary replacement. The resulting implant replaces the intercalary bone structures of the scaphoid, lunate and triquetrum with a single appliance, and is slideably engaged with the distal carpal row via a surgical tunnel and tethered by a resectioned tendon, ligament, or other connective member. The implant facilitates wrist function since the unitary implant replaces skeletal structures that are encapsulated by adjacent bones and frequently move as a unit, while eliminating gaps, voids and ligaments between the intercalary structure.