Abstract: 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.

Abstract: A stabilization device is provided including an axle and a portion that can be affixed to a bone. The device is used to stabilize a joint while allowing motion of the joint along its natural trajectory and it is placed internally in order to prevent pin tract problems. Additionally, methods for using the device are provided that include, in various sequences, inserting the axle into a bone of a joint, adjusting the geometry of the device and attaching the fixable portion to another bone of the joint. The device can be provided as part of a system including an axis trajectory guide useful for locating the axis of rotation of the joint prior to insertion, adjustment and attachment of the device.

Abstract: A grooved slot is provided in a bone fixation device for osteosynthesis that permits adjustment of the bone fixation device relative to the bone, before the bone fixation device is finally fixed to the bone. The grooves are formed on the two longitudinally extending, facing walls of the slot, with the grooves on a first side wall of the slot having a vertical displacement of exactly one-half pitch relative to the grooves on the second, opposite side wall of the slot.

Abstract: A bone plate is provided including a first slot oriented along a longitudinal axis and a slider longitudinally displaceable along the first slot, said slider including a second slot oriented transversely to the longitudinal axis.

Abstract: A bone screw for osteosynthesis is provided with screw threads of different pitch or different lead and various diameters in leading, intermediate and trailing ends. The screw may be used to urge together and compress bones or fragments of bone.

Abstract: A device is provided including a distal nail portion and a proximal nail portion that can be connected to each other to attain a rigid configuration. The device is to be placed internally within the medullary cavities of bones. The device is placed intramedullarily in order to minimize incision size, excessive bone resection and post-operative tendon damage and tenderness. Additionally, one particular method for using the device is provided that includes placing and affixing the distal nail in bone, placing the proximal nail in bone, connecting the distal nail to the proximal nail, doing the desired geometrical adjustments, affixing the proximal nail to the distal nail by tightening the connection and affixing the proximal nail to attain a rigid configuration.

Abstract: A system and method are provided that use a formable bone plate and a clamping apparatus for small bone reconstruction. The formable bone plate includes a plate body having a plurality of nodes separated by internodes. Each node includes a hole formed therein for receiving a screw, wire, tack, or other fixation device screwed or placed into a bone. A clamp engages an engagement section of the node to facilitate bending of at least one of the internodes to contour the plate to the bone in-situ or ex-situ and when at least partly screwed to or not screwed to the bone.

Abstract: A stabilization device is provided including an axle and a portion that can be affixed to a bone. The device is used to stabilize a joint while allowing motion of the joint along its natural trajectory and it is placed internally in order to prevent pin tract problems. Additionally, methods for using the device are provided that include, in various sequences, inserting the axle into a bone of a joint, adjusting the geometry of the device and attaching the fixable portion to another bone of the joint. The device can be provided as part of a system including an axis trajectory guide useful for locating the axis of rotation of the joint prior to insertion, adjustment and attachment of the device.

Abstract: An endosteal nail plate for fixing bone segments is provided. More particularly, there is provided an endosteal nail plate that can be made up of a single piece, or of multiple pieces, as desired. Additionally, the intramedullary nail utilizes a threaded slot on the body thereof, for engaging locking screws for fixation of the intramedullary nail within a bone of a patient.

Abstract: A system, devices and methods for performing an osteotomy on a bone of a multi-axis joint are provided. A cutting guide system is provided for performing one or more cuts to the bone, using the articular surfaces of the articulating bones as a reference. If desired, a prosthesis can be used to emulate the osteotomy and substitute for a damaged articular surface of a bone of a multiaxis joint.

Abstract: A device is provided including a distal nail portion and a proximal nail portion that can be connected to each other to attain a rigid configuration. The device is placed internally within the medullary cavities of at least two bones forming a joint to accomplish arthrodesis of the joint. The device is placed intramedullarily to minimize incision size, excessive bone resection and post-operative tendon damage and tenderness. Additionally, a method for using the device is provided that includes placing and affixing the distal nail in a bone of a joint, placing the proximal nail in another bone of a joint, connecting the distal nail to the proximal nail, doing the desired geometrical adjustments, affixing the proximal nail to the distal nail by tightening the connection and affixing the proximal nail to the other bone of the joint to attain a rigid configuration.

Abstract: An endo-surgical device, system and method are provided. The endo-surgical device includes a flared prow that limits the displacement and rotation of the cannula to keep the knife away from tissues that are not intended to be cut. The endo-surgical tool can be utilized as part of a system for performing an endo-surgical procedure.

Abstract: An internal device is provided for stabilizing a joint having multiple axes of rotation. The device includes two axles, separated by a body portion. The two axles are maintained by the body portion in a geometric relationship that replicates the geometric relationship of the rotational axes of the joint. The axles are installed into the bones of the joint to stabilize the joint.

Abstract: Devices, implements and methods are provided for performing trapezioplasty of the osteoarthritic trapezium. Once a palmar osteophyte has been removed from the trapezium bone, a trapezial rasp is used to shape the central portion of the trapezium bone into an initial saddle shape. A contouring tool having a double curvature reverse saddle shape is used to contour the trapezium bone into a final, smooth saddle shape.

Abstract: An endosteal nail plate for fixing bone segments is provided. More particularly, there is provided an endosteal nail plate that can be made up of a single piece, or of multiple pieces, as desired. Additionally, the intramedullary nail utilizes a threaded slot on the body thereof, for engaging locking screws for fixation of the intramedullary nail within a bone of a patient.

Abstract: A device is provided including a rotating portion that can be attached to a plate affixed to a first bone forming a joint and a portion that can be affixed to a second bone of the joint. The device is placed internally in order to prevent pin tract problems and to stabilize the joint while allowing motion of the joint along its natural trajectory. Additionally, a method for using the device is provided that includes attaching the rotating portion to a plate attached to a first bone forming a joint, and attaching the fixable portion to a second bone of the joint.

Abstract: A stabilization device is provided including an axle and a portion that can be affixed to a bone. The device is used to stabilize a joint while allowing motion of the joint along its natural trajectory and it is placed internally in order to prevent pin tract problems. Additionally, methods for using the device are provided that include, in various sequences, inserting the axle into a bone of a joint, adjusting the geometry of the device and attaching the fixable portion to another bone of the joint. The device can be provided as part of a system including an axis trajectory guide useful for locating the axis of rotation of the joint prior to insertion, adjustment and attachment of the device.

Abstract: A prosthesis is provided for replacing a portion of a bone making up a joint. The prosthesis is adapted, intraoperatively, to optimize the anatomical alignment of the prosthesis in the joint. In particular, a jig is used to identify the axis of rotation of the joint intraoperatively and to align a portion of the prosthesis with the identified axis. The angle of the head of the prosthesis is adjusted to optimize contact with the appropriate corresponding portions of the joint, at which point the position of the head is fixed to prevent further rotation of the head relative to the remainder of the prosthesis.

Abstract: A drill guide is provided for assisting in the placement of an intramedullary nail including a distal nail portion and a proximal nail portion that can be connected to each other to attain a rigid configuration. The guide may also be used to measure a depth of a hole drilled to assist in the selection of a maximum desired length of the screws used to affix the nail portions to the bone. The distal nail portion can include a plurality of screw receiving holes, a single screw receiving hole, or no screw receiving holes, as desired.