Implant positioning devices for use with and assisting in positioning orthopaedic fixation devices (such as bone plates, etc.). An implant positioning device may include a body that has a fastener guide with slits in a first end of the fastener guide that form a retaining arm proximal to the first end of the fastener guide. The implant positioning device may also be coupled to a bone plate by a retaining beam positioned within the implant positioning device to facilitate ease of alignment and insertion of the fastener into a fastener apertures of the bone plate.

A bone fixation assembly including a first member, a second member and a link member extending between the first member and the second member. The first and second members each including a slot formed in an axial surface of a shaft extending along a longitudinal axis. The link member including a first lateral side being slidably received in the slot of the first member and a second lateral side being slidably received in the slot of the second member.

A bone fixation system includes a first plate including a plate body and a connection portion extending distally therefrom, the connection portion including a positioning tab at a distal end thereof, the connection portion including a first opening extending therethrough and a ramped part, and a second plate including a coupling aperture along a proximal portion thereof, the coupling aperture configured to receive the positioning tab therein, the coupling aperture including a ramped proximal face configured to abut against the ramped part of the second surface of the positioning tab when the positioning tab is inserted into the coupling aperture, the head portion including a second opening extending therethrough. A connection screw configured to extend through the first opening and the second opening to couple the first and second plates together. Tightening the screw translates the ramped proximal face along the ramped part, eliminating a connection gap therebetween.

A bone plate has an underside on the side of the bone, an upper side and a plurality of holes in the plate connecting the underside with the upper side, with a central hole axis. At least one of these holes in the plate has an internal jacket surface that tapers towards the underside, while the internal jacket surface has N≥3 recesses which extend radially away from the axis of the hole.

An osteonsynthesis implant has a plate-shaped base component having at least one hole, at least one axially extending rod-shaped tie rod having a first and a second end and at least one threaded component. The first end of the rod-shaped tie rod can be placed in the hole of the base component. The hole and the first end of the tie rod are formed such that the first end of the tie rod can be locked axially in the hole and is pivoted about an axis of the hole while locked to the plate. The second end of the tie rod is provided with a thread and the threaded component can be screwed onto the thread of the first tie rod. The tie rod can perform a pivoting movement of up to about 20° around the hole axis while locked in the plate hole.

A bone plate includes a first through hole extending through the plate along a first longitudinal axis from a proximal surface of the plate to a bone-facing distal surface thereof which, when the plate is placed on a target portion of bone in a desired orientation, faces the bone. An outer wall of the first through hole includes three wall sections provided with projections for receiving a screw head of a bone screw. The three wall sections are straight or convex.

A fixation assembly for securing parts of a sternum has a first section having a first attachment structure for securing the first section to a first sternum part. The fixation assembly includes a second section having a second attachment structure for securing the second section to a second sternum part. A mating arrangement is provided defining a mating direction and a predetermined relative position between the first and second sections in a plane perpendicular to the mating direction. At least one holding member is provided for detachably holding the first and second sections in an abutting relationship in the predetermined relative position. This may be achieved in one variant by simultaneous engagement of the first and second sections substantially along the mating direction.

Certain embodiments of the invention provide plates for treating periarticular fractures or other non-full body weight bearing applications that combine polyaxial fixation with a low profile and enhanced contouring that more closely conforms to bone. Such plates can be designed to achieve buttressing effect and/or to be used in a reinforcement mode. Other features can be combined with these. Such plates can be created for use on bone sites such as on a tibia, fibula, metatarsal, calcaneous, other foot bone, humerus, radius, ulna, spinal, maxillofacial, as well as sites on other bones.

Apparatus and methods for delivery of an implant at a target site in an interior of a bone. The apparatus may include a plate. The plate may include a bottom surface complementing a surface contour of a bone. The plate may define first holes sized for receiving screws. The plate may define second holes sized for receiving fixation elements. The plate may define an opening. The opening may be sized for providing passage of the implant through the plate. When the bottom surface is seated complementarily against the surface contour, the first holes may point into an interior of the bone and into a volume occupied by the implant in the interior when the implant is positioned at a target site and radially expanded to form a mesh cage.

An orthopedic fixation assembly for connecting to a bone includes a fixation plate having a hole, an insert securable to the hole and a screw securable to the insert. The fixation plate includes a shoulder recessed from its upper surface and an aperture. The insert includes a base portion and a flange extending laterally from an upper end of the base portion. The insert defines an insert central axis extending in a direction generally perpendicular to the flange. The screw has a screw head and the base portion has an insert hole with machined internal threads for engaging the screw. The insert hole defines an insert hole central axis extending in a direction at an offset angle relative to the insert central axis. The aperture of the fixation plate is dimensioned to receive the base portion of the insert and the recessed shoulder is dimensioned to receive the flange.