Abstract: Disclosed are examples of a patella bone plate. In some examples, the patella bone plates may include a contoured body with a longitudinal axis, and with a radius of curvature, a plurality of contoured arms and extending superiorly from the contoured body, the plurality of contoured arms spaced apart from the longitudinal axis, the plurality of contoured arms, a plurality of holes, a hook, the hook having a radius of curvature configured to allow the hook to extend around an apex of the patella, a hole located on the hook, the hole defining a distal fixation screw path that is substantially parallel to and offset from the longitudinal axis. In various examples, the contoured body may have a single arm with a staggered hole arrangement. The plurality of holes may include variable angle holes, locking holes, fixation holes, slots, or a combination thereof.

Abstract: Variable angle holes in bone plates structured to facilitate the formation of axial compression or tension of a bone, or which can assist in bone distraction. The variable angle hole can extend about a central axis and includes an inwardly extending wedge wall. The variable angle hole can be sized to receive insertion of a fixation element at a location at which a central longitudinal axis of the fixation element is axially offset from the central axis of the variable angle hole by an offset distance at least when the fixation element is initially driven into bone at least in a transverse direction. The wedge wall can be configured to be engaged by a portion of the fixation element in a manner that axially displaces at least one of the bone plate, the fixation element, and/or bone(s) in a direction that can generally reduce or increase the offset distance.

Abstract: Disclosed herein is a self-countersinking bone screw and a system and a method for countersinking a bone screw or fastener used in connection with an orthopedic implant such as, for example, an intramedullary nail. The bone screw includes one or more cutting features configured to self-countersink the head of the screw. The system and method utilize instrumentation including a plurality of markings or indicia configured to indicate a position of the head of the screw relative to an outer surface of the patient's bone. In use, the method enables a surgeon to quickly and easily countersink one or more bone screws used to couple an IM nail to a patient's bone without requiring additional instrumentation to form a countersunk hole in the patient's bone.

Abstract: Variable angle holes in bone plates structured to facilitate the formation of axial compression or tension of a bone, or which can assist in bone distraction. The variable angle hole can extend about a central axis and includes an inwardly extending wedge wall. The variable angle hole can be sized to receive insertion of a fixation element at a location at which a central longitudinal axis of the fixation element is axially offset from the central axis of the variable angle hole by an offset distance at least when the fixation element is initially driven into bone at least in a transverse direction. The wedge wall can be configured to be engaged by a portion of the fixation element in a manner that axially displaces at least one of the bone plate, the fixation element, and/or bone(s) in a direction that can generally reduce or increase the offset distance.

Abstract: A collinear reduction clamp including a compression rod, an arm, and an advancing mechanism for moving the compression rod relative to the arm. In some examples, the rod may include a cannulated bore to enable a bone screw to be inserted therein. The rod may also include a cap. The cap including a bone screw washer. In use, a bone screw can be inserted through the cannulated bore of the rod, the bone screw passing through the washer thereby coupling the washer to the bone screw thereby enabling both the bone screw and the washer to be inserted into the patient's bone directly at the compression site. In some examples, the cannulated bore may be used in combination with first and second tubes and a guidewire to enable a cannulated bone screw to be inserted therein. In some examples, the arm may be configured as a length adjusting arm.

Abstract: An orthopedic instrument for manipulating (e.g., compressing or distracting) one or more patient's bone fragments is disclosed. In one embodiment, the orthopedic instrument includes forceps having first and second arms and first and second handles, respectively. Each arm including a coupling mechanism for selectively engaging removable tips or bell housings. Each tip or bell housing including a first end arranged and configured to mate with a fastener hole or opening formed in a bone plate, a second end arranged and configured to receive a head portion of a bone fastener, and an intermediate portion arranged and configured to couple to the coupling mechanism of the first and second arms. In addition, the orthopedic instrument may include a force sensing mechanism or gauge arranged and configured to measure an amount of force being applied across the bone fracture.

Abstract: Variable angle holes in bone plates structured to facilitate the formation of axial compression or tension of a bone, or which can assist in bone distraction. The variable angle hole can extend about a central axis and includes an inwardly extending wedge wall. The variable angle hole can be sized to receive insertion of a fixation element at a location at which a central longitudinal axis of the fixation element is axially offset from the central axis of the variable angle hole by an offset distance at least when the fixation element is initially driven into bone at least in a transverse direction. The wedge wall can be configured to be engaged by a portion of the fixation element in a manner that axially displaces at least one of the bone plate, the fixation element, and/or bone(s) in a direction that can generally reduce or increase the offset distance.

Abstract: Variable angle holes in bone plates that are structured to facilitate the formation of axial compression or tension of a bone, or which can assist in bone distraction. The variable angle hole can extend about a central axis and includes an inwardly extending wedge wall. The variable angle hole can be sized to receive insertion of a fixation element at a location at which a central longitudinal axis of the fixation element is axially offset from the central axis of the variable angle hole by an offset distance at least when the fixation element is initially driven into bone at least in a transverse direction. The wedge wall can be configured to be engaged by a portion of the fixation element in a manner that axially displaces at least one of the bone plate, the fixation element, and/or bone(s) in a direction that can generally reduce or increase the offset distance.

Abstract: Periprosthetic bone fixation plates are disclosed including, for example, periprosthetic proximal femur plate, periprosthetic distal femur plate, periprosthetic humerus plate, periprosthetic ring plate, and periprosthetic troch plate. In use, the periprosthetic bone fixation plates are arranged and configured for use in periprosthetic fractures. That is, the periprosthetic plates include one or more features to facilitate positioning and securement of the bone fixation plate to a patients bone that previously received a surgically implanted orthopedic device or implant such as, for example, an intramedullary nail, a hip prosthesis, a knee prosthesis, etc. In use, the one or more features are designed and configured to facilitate avoidance of the previous surgically implanted orthopedic device or implant. In addition, the periprosthetic bone fixation plates are arranged and configured to facilitate plating of a longer working length as compared to existing bone fixation plates (e.g.

Abstract: An orthopedic instrument for manipulating (e.g., compressing or distracting) one or more patient's bone fragments is disclosed. In one embodiment, the orthopedic instrument includes forceps having first and second arms and first and second handles, respectively. Each arm including a coupling mechanism for selectively engaging removable tips or bell housings. Each tip or bell housing including a first end arranged and configured to mate with a fastener hole or opening formed in a bone plate, a second end arranged and configured to receive a head portion of a bone fastener, and an intermediate portion arranged and configured to couple to the coupling mechanism of the first and second arms. In addition, the orthopedic instrument may include a force sensing mechanism or gauge arranged and configured to measure an amount of force being applied across the bone fracture.

Abstract: Variable angle holes in bone plates that are structured to facilitate the formation of axial compression or tension of a bone, or which can assist in bone distraction. The variable angle hole can extend about a central axis and includes an inwardly extending wedge wall. The variable angle hole can be sized to receive insertion of a fixation element at a location at which a central longitudinal axis of the fixation element is axially offset from the central axis of the variable angle hole by an offset distance at least when the fixation element is initially driven into bone at least in a transverse direction. The wedge wall can be configured to be engaged by a portion of the fixation element in a manner that axially displaces at least one of the bone plate, the fixation element, and/or bone(s) in a direction that can generally reduce or increase the offset distance.

Abstract: Variable angle holes in bone plates that are structured to facilitate the formation of axial compression or tension of a bone, or which can assist in bone distraction. The variable angle hole can extend about a central axis and includes an inwardly extending wedge wall. The variable angle hole can be sized to receive insertion of a fixation element at a location at which a central longitudinal axis of the fixation element is axially offset from the central axis of the variable angle hole by an offset distance at least when the fixation element is initially driven into bone at least in a transverse direction. The wedge wall can be configured to be engaged by a portion of the fixation element in a manner that axially displaces at least one of the bone plate, the fixation element, and/or bone(s) in a direction that can generally reduce or increase the offset distance.

Abstract: Variable angle holes in bone plates that are structured to facilitate the formation of axial compression or tension of a bone, or which can assist in bone distraction. The variable angle hole can extend about a central axis and includes an inwardly extending wedge wall. The variable angle hole can be sized to receive insertion of a fixation element at a location at which a central longitudinal axis of the fixation element is axially offset from the central axis of the variable angle hole by an offset distance at least when the fixation element is initially driven into bone at least in a transverse direction. The wedge wall can be configured to be engaged by a portion of the fixation element in a manner that axially displaces at least one of the bone plate, the fixation element, and/or bone(s) in a direction that can generally reduce or increase the offset distance.

Abstract: The ability of a waste treatment process to remove selenium from a waste stream is improved by pretreating the waste with a compound selected from the group having the formulaX(ZO.sub.a).sub.b,Q.sub.m O.sub.n,ClO.sub.3,Cl.sub.2 O.sub.6,Br.sub.3 O.sub.8,I.sub.2 O.sub.5, andmixtures thereof, wherein X is a cation, Z is halogen selected from the group consisting of chlorine, bromine, and iodine, a is an integer from 1-3, b is an integer equal to the valence of X, Q is chlorine or bromine, and m and n are each 1 or 2, provided than m+n equals 3.

Abstract: A system for repeatedly depositing equal volumes of liquid from a pressurized source of the latter into a series of drums. The liquid is metered through a flow control facility, and thence into a dispenser which is adapted to introduce the liquid to a drum in a manner to avoid foaming action within the latter.