Abstract: Disclosed is a system suitable for affixing an orthopedic component to a bone using a polyaxial screw comprising an orthopedic component, a screw, and a locking cap; the orthopedic component having a hole with an entry side comprising an internal helical thread and an exit side comprising an internal concave base; the screw having a head comprising a convex base adapted to engage the concave base of the hole, and a convex crown having a plurality of splines; the locking cap comprising a proximal end having a cap socket, a distal end defining a substantially circular contact edge adapted to impinge on the plurality of splines on the crown of the screw when the locking cap is inserted in the hole, and a substantially cylindrical body therebetween having an external helical thread adapted to engage the internal helical thread of the hole.

Abstract: Disclosed is a prosthetic joint assembly and method for joining a humerus bone to scapula bone, comprising a humeral component for engagement with said humerus bone and having a concave dish; a scapular component for engagement with said scapula bone and having a convex surface adapted to engage said concave dish; wherein the geometry of said components when implanted and engaged is such that the humerus bone is relocated with respect to the scapula bone by calculating a humeral reference point medial to a natural center of rotation (COR), and a scapular reference point approximately normal and medial to the humeral reference point, relocating the humerus bone so the humeral reference point superimposes the scapular reference point, establishing a prosthetic COR at the scapular reference point. Also disclosed is a scapular baseplate having a first side with a mating surface and scapular stem, and a second side having a trunnion.

Abstract: Disclosed is an method for use of an intramedullary nail comprising a shaft having a length, a diameter, an exterior bone contacting surface, a leading (or distal) end and a trailing (or proximal) end, wherein the leading end is progressively tapered and comprises a well or cup, adapted to receive the tip of a standard K-wire, the trailing end comprises a driving fitting adapted for attachment to a driving tool for insertion of the nail into the prepared bone, the trailing end may optionally include an internal thread that can be used to secure the nail to a drill guide which can also function as an insertion handle, and the nail's shaft may also optionally be equipped with threaded and/or unthreaded cross-drilled holes for insertion of unicortical locking screws and bone screws, respectively, once the nail is placed as desired.

Abstract: An orthopedic implant adapted for fastening to a bone by use of a screw, the implant comprising a plate composed of a biocompatible material and a hole defining an internal hole wall and having an innermost surface; the hole adapted to receive said screw; the internal hole wall comprising a primary inner width and a secondary outer width with a distance therebetween defining a volume; the volume comprising a biocompatible material and a plurality of blind holes extending from the primary inner width to the secondary outer width resulting in a porosity; wherein the internal hole wall comprises a non-helical pattern. In at least one embodiment, 30% to 70% of the volume is comprised of the biocompatible material and the remaining 70% to 30% of the volume is devoid of any material. In another embodiment, the porosity of the volume is between 0.3 and 0.7.

Abstract: Disclosed is a bone cutting and shortening system and the method of using the same, the system comprising a bone plate and a cutting guide adapted to slidingly engage by inserting the cutting guide into the bone plate from the overhead direction, the cutting guide adapted to facilitate parallel cutting planes on a bone at precisely ascertainable offset distances, and the bone plate adapted to stabilize the shortened bone after cutting.

Abstract: A plate for fracture fixation is provided including a plurality of individually adjustable heads and various features to achieve: a.) superior fixation of the plate to osteoporotic diaphyseal bone; b.) improved visualization of the fracture line; c.) intraoperative adjustability to achieve better contact of the plate and the bone; d.) reduced risk of post-surgery tendon rupture; d.) improved fixation of small volar marginal fragments and, e.) improved targeting and fixing of particular fractured bone fragments.

Abstract: 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.

Abstract: Disclosed is an method for use of an intramedullary nail comprising a shaft having a length, a diameter, an exterior bone contacting surface, a leading (or distal) end and a trailing (or proximal) end, wherein the leading end is progressively tapered and comprises a well or cup, adapted to receive the tip of a standard K-wire, the trailing end comprises a driving fitting adapted for attachment to a driving tool for insertion of the nail into the prepared bone, the trailing end may optionally include an internal thread that can be used to secure the nail to a drill guide which can also function as an insertion handle, and the nail's shaft may also optionally be equipped with threaded and/or unthreaded cross-drilled holes for insertion of unicortical locking screws and bone screws, respectively, once the nail is placed as desired.

Abstract: A hook plate for use in conjunction with a fracture fixation plate, said fracture fixation plate including a bone contacting surface and an opposite surface, said hook plate comprising a substantially rigid plate having a first portion and a second portion; the first portion adapted for slidable engagement with, said opposite surface of said fracture fixation plate; the second portion configured to wrap around an edge of said fracture fixation plate to engage with a bone fragment and reduce a fracture; the first portion being substantially flat and defining a first portion plane; the second portion having at least two projections which curve downward to a position below the first portion plane and terminate in hook ends adapted to engage with said bone fragment; the first portion including a slot that transects said hook plate from a surface of said hook plate that faces the fracture fixation plate to an opposing surface of said hook plate for engagement with a fastener on said opposite surface of said fractu

Abstract: Disclosed is a prosthetic joint assembly for joining a humerus bone to a scapula bone, comprising a humeral component adapted for engagement with said humerus bone and a concave dish; a scapular component adapted for engagement with said scapula bone and a convex surface adapted to engage said concave dish; wherein when said components are implanted and engaged in a rest position said prosthetic center of rotation is displaced in a direction that is inferior and medial relative to a natural center of rotation and said humerus bone is displaced in a direction that is inferior relative to said natural center of rotation.

Abstract: 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.

Abstract: Disclosed is an intramedullary nail comprising a shaft having a length, a constant diameter, an exterior bone contacting surface, a leading (or distal) end and a trailing (or proximal) end, wherein the leading end is progressively tapered and comprises a well or cup, adapted to receive the tip of a standard K-wire, the trailing end comprises a driving fitting adapted for attachment to a driving tool for insertion of the nail into the prepared bone, the trailing end may optionally include an internal thread that can be used to secure the nail to a drill guide which can also function as an insertion handle, and the nail's shaft may also optionally be equipped with threaded and/or unthreaded cross-drilled holes for insertion of unicortical locking screws and bone screws, respectively, once the nail is placed as desired.

Abstract: Disclosed is a distal radio ulnar joint prosthesis system, and the method of use for the same, the system comprising an ulnar stem component, and ulnar head component, a set screw, and a sigmoid notch component, the system providing a prosthesis for replacement of the distal radio ulnar joint to restore the pronation-supination motion of the forearm as well as stability between the ulna and radius; a DRUJ prosthesis adapted for rotational alignment of the replacement joint along the axis of forearm rotation; a DRUJ prosthesis which allows for the use of a number of different sized heads having differing geometries; a DRUJ prosthesis adapted for variable pivoting alignment between the replacement distal ulnar head and the ulna; and a DRUJ prosthesis adapted for adjustment in the alignment between the articulating surface of the ulnar head and the sigmoid notch.

Abstract: Disclosed is a bone cutting and shortening system and the method of using the same, the system comprising a bone plate and a cutting guide adapted to slidingly engage by inserting the cutting guide into the bone plate from the overhead direction, the cutting guide adapted to facilitate parallel cutting planes on a bone at precisely ascertainable offset distances, and the bone plate adapted to stabilize the shortened bone after cutting.

Abstract: Disclosed are devices and methods used to customize the length of fasteners used during orthopedic surgeries, comprising creating a hole of the desired depth in a bone, measuring the depth of the hole using a depth measuring device, calculating, using the depth measuring device, the optimal length dimension of the fastener, transferring the calculated fastener optimal length dimension to a fastener cutting device, inserting a fastener having a length exceeding the optimal length dimension into the fastener cutting device, and cutting the fastener to the optimal length dimension using the fastener cutting device.

Abstract: Disclosed is a bone cutting and shortening system and the method of using the same, the system comprising a bone plate and a cutting guide adapted to slidingly engage by inserting the cutting guide into the bone plate from the overhead direction, the cutting guide adapted to facilitate parallel cutting planes on a bone at precisely ascertainable offset distances, and the bone plate adapted to stabilize the shortened bone after cutting.

Abstract: Disclosed is a bone cutting and shortening system and the method of using the same, the system comprising a bone plate and a cutting guide adapted to slidingly engage by inserting the cutting guide into the bone plate from the overhead direction, the cutting guide adapted to facilitate parallel cutting planes on a bone at precisely ascertainable offset distances, and the bone plate adapted to stabilize the shortened bone after cutting.

Abstract: Disclosed is a bone compression plate system comprising a substantially elongated first plate having a bone attachment portion and a anchoring portion, the bone attachment portion comprising one or more holes adapted to receive screws for attachment to a bone, the anchoring portion comprising a compression anchor; a substantially elongated second plate having a bone attachment portion and a anchoring portion, the bone attachment portion comprising one or more holes adapted to receive screws for attachment to a bone, the anchoring portion comprising a compression anchor; and a compression screw comprising a male component and a female component, each of the male and female components comprising a head, a shaft, and a tip, the tip of the male component adapted for threaded engagement with the tip of the female component, the head of the male component adapted to engage into, and be retained by the compression anchor in the first plate, and the head of the component adapted to engage into, and be retained by the

Abstract: Disclosed is an intramedullary nail comprising a shaft having a length, a constant diameter, an exterior bone contacting surface, a leading (or distal) end and a trailing (or proximal) end, wherein the leading end is progressively tapered and comprises a well or cup, adapted to receive the tip of a standard K-wire, the trailing end comprises a driving fitting adapted for attachment to a driving tool for insertion of the nail into the prepared bone, the trailing end may optionally include an internal thread that can be used to secure the nail to a drill guide which can also function as an insertion handle, and the nail's shaft may also optionally be equipped with threaded and/or unthreaded cross-drilled holes for insertion of unicortical locking screws and bone screws, respectively, once the nail is placed as desired.

Abstract: Disclosed is a distal radio ulnar joint prosthesis system, and the method of use for the same, the system comprising an ulnar stem component, and ulnar head component, a set screw, and a sigmoid notch component, the system providing a prosthesis for replacement of the distal radio ulnar joint to restore the pronation-supination motion of the forearm as well as stability between the ulna and radius; a DRUJ prosthesis adapted for rotational alignment of the replacement joint along the axis of forearm rotation; a DRUJ prosthesis which allows for the use of a number of different sized heads having differing geometries; a DRUJ prosthesis adapted for variable pivoting alignment between the replacement distal ulnar head and the ulna; and a DRUJ prosthesis adapted for adjustment in the alignment between the articulating surface of the ulnar head and the sigmoid notch.