A revision implant component comprising a body having a plurality of screw holes and a tapered head configured to engage a talar dome component of a multi-component ankle prosthesis. A surgical method is disclosed which includes creating an incision in a patient, exposing a multi-component ankle prosthesis implanted in a patient, disassembling at least one component of the multi-component ankle prosthesis, affixing a revision implant component to non-damaged bone using screws, and coupling the revision implant component to a talar dome of the multi-component ankle prosthesis.

The invention relates to a plate fixed between two bone parts by way of screws engaged in holes formed in the thickness of said plate. The plate comprises an angled member or rib which is inclined according to an angle of between about 30° and 60° in relation to the plane defined by the plate. The angled member or rib has a hole for engaging a screw and is located in the central part of the width, over a determined part of the length of the plate, so that the screw brings the two bone parts into a compressive position.

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.

A compression device made of a superelastic material having a peripheral portion with an upper surface, a lower surface, and a central opening extending therethrough is provided. Tips of one or more resilient structures of the compression device project inward of the peripheral portion and form an opening. The one or more resilient structures are configured to exert a biasing force in a direction when deformed in an opposite direction. Also provided is a bone plate assembly comprising a captively retained compression device and a bone plate comprising one or more integrally formed resilient structures.

A bone plate having at least one variable angle locking hole is described. The variable angle locking hole allows a bone anchor having a threaded head to be driven into underlying bone while oriented at an angle with respect to a central hole axis of the hole that is within a range of angles at which the head is configured to threadedly mate with the at least one thread of the bone plate. Accordingly, the bone anchor can be driven into the underlying bone until the threaded head threadedly purchases with the bone plate inside the variable angle locking hole.

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., plating from, for example, femoral condyle to greater trochanter).

A bone plate defines an interior surface that defines: a hole extending through the plate along an axis; plate threads configured for locking with a threaded head of a locking screw; first, second, and third columns sequentially located about the axis; a first corner extending tangentially from the second to the first column; and a second corner extending tangentially from the third to the first column. The first and second corners are substantially equidistantly spaced from the axis. The plate threads extend across the first, second, and third columns and the first and second corners. The interior surface defines a recess between the second and third columns and facing the first column. An apex of the recess is spaced further from the axis than are the first and second corners, such that the recess circumferentially interrupts at least a portion of at least one of the plate threads.

The invention provides a nonmetal implant screw locking structure, which has the advantages of simple structure, novel design, simple production and processing, and convenient clinical operation. In addition, the structure of the invention can be used for orthopedic nonmetal implants such as the bone injury repair plate, spinal fusion cage, spinal fixation plate, posterior cervical single trapdoor plate, posterior cervical plate, lumbar anterior plate and lumbosacral plate, bringing good economic and social benefits gradually.

A bone plate (1) for positioning along a medial or lateral portion of a clavicle including an upper surface (2) which, in an operative position, faces away from the clavicle, a lower surface (3) which, in the operative position, faces toward the clavicle, a non-linear central longitudinal axis (4), a middle portion (5) of the length L.sub.M, a left terminal portion (6) of the length L.sub.L extending from the left end of the middle portion having a plurality of circular screw holes (8) for receiving bone screws, and a right terminal portion (7) of the length L.sub.R extending from the right end of the middle portion having a plurality of circular screw holes (9) for receiving bone screws. The total length L of the bone plate corresponds to L=L.sub.M+L.sub.L+L.sub.R, and at least one of the circular screw holes is a variable angle screw hole.

A driving pin can be used for installing a bone plate on a bone. In some examples, the driving pin has a driving pin body extending from a proximal end to a distal end. The driving pin body may define at least three regions of different cross-sectional thickness, including a bone penetrating region adjacent the distal end, a driving region adjacent the proximal end, and a bone plate orienting region between the bone penetrating region and the driving region. In general, the bone penetrating region has a smaller cross-sectional thickness than the bone plate orienting region and the bone plate orienting region has a smaller cross-sectional thickness than the driving region. The bone plate orienting region may be sized to conform to the size of a fixation hole extending through bone plate.