A flexible plastic, resin or polymer material forming a trial plate for use is surgery of bones including spine and extremities. The trial plate having at least one radio opaque region and guides for positioning. A kit may be provided containing at least one flexible trial plate.

A fixation assembly for bone fixation and a method for joining bones or bone fragments of a single bone and translating uniform compression to the bones. The fixation assembly comprises a post member coupled to a screw member. The post member comprises a head portion connected to an anchoring portion, wherein the head portion is offset from the anchoring portion by a first angle. The head portion may comprise a curved body annularly extending from a first end to a second end, wherein the first end is separated from the second end by a slot, and wherein the curved body defines a tapered annular bore therein. The anchoring portion comprises a first leg extending from the first end of the curved body and a second leg extending from the second end of the curved body. The screw member comprises a tapered bulbous portion connected to a threaded elongated portion. The screw member is coupled to the post member by advancing the elongated portion of the screw member through the tapered bore of the post member until the tapered bulbous portion of the screw member abuts the tapered bore of the post member thereby creating an interference fit. The first angle of the post member determines the angle of fixation of the post member with respect to the screw member.

An orthopedic plate is specifically configured for use in osteotomies, in which part of the plate extends into a portion of a first bone segment and part is external to the cortical surface of an adjacent bone segment to fix the segments to allow them to fuse. The plate has a first end and a second end where the end which is inserted into the bone has a chamfer and a through hole having a hole axis optionally at an oblique angle to the longitudinal axis of the plate, and which can receive a screw, peg or pin. The second end of the plate includes a locking screw hole and optionally including a compression slot extending in a direction toward a screw hole in the opposing end. Optionally, the non-locking hole has a shroud that forms an arc or portion of a cylinder over the hole. A plate driver having a recess that holds the plate is used to insert the plate into the bone.

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.

A bone plate system and method for implanting the bone plate. The bone plate may include a head portion and a shaft portion, the shaft portion having a longitudinal axis and comprising a plurality of discrete aperture clusters. Each aperture cluster may include a non-threaded, non-locking bone fastener aperture configured to provide a polyaxial compressive construct and at least one threaded, locking bone fastener aperture. Once aligned with the bone, a first bone fastener is inserted into the bone through at least one of the non-threaded apertures in a direction normal to the longitudinal axis, compressing the bone along the longitudinal axis of the shaft portion of the bone plate. A second bone fastener is inserted into the bone through at least one of the threaded, locking bone fastener apertures in a direction oblique to the longitudinal axis and securing the bone plate to the bone.

A bone plate system for internal fixation of bone fractures includes a bone plate having a plurality of bone plate holes. The holes are constructed to receive either a non-locking, locking, or variable-angle locking bone screw. The holes have discrete columns of teeth or thread segments arranged around the inner surface of the hole for engaging threads on the heads of locking and variable-angle locking bone screws. Conventional locking bone screws engage the bone plate coaxially with the central axis of the bone plate hole. Variable-angle locking bone screws can engage the bone plate at a selectable angle within a range of selectable angles relative to the central axis of the bone plate hole. The head of the variable-angle locking screw is at least partially spherical, and the thread thereon has a profile that follows the arc-shaped radius of curvature of the spherical portion of the screwhead.

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.

A system for treating a bone fracture includes an intramedullary nail sized and shaped to be inserted through a medullary canal of a bone to extend across a fracture site of the bone, the intramedullary device extending from a first end to a second end and including a plurality of openings extending laterally therethrough, the openings sized and shaped to receive bone fixation elements therethrough, and an insertion device including a base portion and a handle portion extending therefrom, the base portion integrally formed with the intramedullary nail and connected thereto via a plurality of connection points which, when a force is exerted thereon, break to disconnect the insertion device from the intramedullary nail, the base portion including a plurality of guide channels extending therethrough, each of the guide channels being aligned with a corresponding one of the openings of the intramedullary nail.

Disclosed are sterile instruments and instrument kits for use in surgery, said instruments including a reamer assembly comprising a reamer depth stop and a reamer, a grommet placer instrument, and a sizing instrument for use in joint implant surgery. The invention also concerns a kit for use in joint implant surgery, comprising said reamer assembly, said grommet placer instrument, a wire guide, comprising a wire guide body, and a guide wire. A method for using one or more of the instruments and kit as described herein is also provided.

Devices, systems, and methods for bone stabilization, especially volar distal radius stabilization. The stabilization system may include a bone plate having an elongated portion, an enlarged head portion, and a transition region connecting the elongated portion to the enlarged head portion, and the plate including a plurality of through holes. A plurality of fasteners may be configured to extend through one or more of the plurality of through holes in the bone plate and into the bone. The plate may be used to stabilize a fracture in a long bone, such as a radius.