The present invention relates to an osseous pin (1) for bone fracture fixation. The pin comprises a threaded front section (2) and an unthreaded rear section (3). The threaded front section is configured with two or more kerfs (4) to facilitate breaking of the pin at any one of said kerfs. The present invention also relates to a guide sleeve for use in insertion of the osseous pin (1) into bone fragments at a bone fracture and breaking of said pin at the kerf (4) closest to the entrance site of the pin into the bone fragments. The present invention also relates to an extraction member for use in extraction of the osseous pin (1) from bone fragments at a healed bone fracture and a kit, comprising said components.

A compression screw for applying compression at a bone joint. The compression screw includes an axial screw body extending from a distal end to a proximal end with the distal end including a series of bone engaging threads configured to be self-drilling and self-tapping and the proximal end including a head which defines a radially extending shoulder. At least one proximal rotary cutting structure is defined proximally of the bone engaging threads. The at least one proximal rotary cutting structure is configured to be self-drilling such that a proximal portion of the axial screw body cuts into and advances within a bone of the bone joint as the axial screw body is advanced. A method of inserting the compression screw is also provided.

A system for fastening soft tissue to bone includes a bone screw having a threaded shaft and a screw head having an underside with malleable protuberances that project toward a distal end of the threaded shaft. A fixation plate is coupled with the threaded shaft. The fixation plate has a proximal face that opposes the underside of the screw head, a distal face that faces away from the underside of the screw head, an outer peripheral edge that extends between the proximal and distal faces, a central opening for receiving the threaded shaft, and protrusions spaced from one another around the outer peripheral edge that extend distally beyond the distal face of the fixation plate. The system includes an insertion tool having a handle and a tubular shaft extending distally from the handle. The tubular shaft has a proximal shaft section having an inner diameter that closely matches an outer diameter of the screw head, and a distal shaft section having an inner surface with a groove that seats the outer peripheral edge of the fixation plate for releasable retaining the fixation plate within the distal shaft section. A cartridge contains the bone screw and the fixation plate coupled with the bone screw. The cartridge includes a proximal end that seats the screw head and a distal end that seats the fixation plate of the bone screw.

A screw suitable for use specifically in the field of oral dental surgery consists of a bioresorbable material and comprises a drive that can be broken off by means of a predetermined breaking point and/or has a thickened shaft below the contact surface of a cap of the head of the screw.

A build plate includes a surface that defines at least one opening configured for disposal of a proximal portion of a screw shaft. The proximal portion is formed by a first manufacturing method and defines a distal face. The proximal portion is connected with the surface in a configuration to orient the distal face for forming a distal portion of the screw shaft thereon by a second manufacturing method that includes an additive manufacturing apparatus. In some embodiments, systems, spinal constructs, surgical instruments and methods are disclosed.

According to an aspect of some embodiments there is provided a bone anchor including an elongated core having a tip at a distal end and coupled to a head at a proximal end, and a segmented helical thread defining one or more gaps therein, each gap defining at least a trailing wall, the trailing wall having a cutting surface including at least one cutting edge. The bone cutting surface and the cutting edge configured to cut bone and guide bone fragments radially inwards. According to an aspect of some embodiments there is further provided a bone anchor kit and a method for implanting the bone anchor in bone.

A compression screw for applying compression at a bone joint. The compression screw includes an axial screw body extending from a distal end to a proximal end with the distal end including a series of bone engaging threads configured to be self-drilling and self-tapping and the proximal end including a head which defines a radially extending shoulder. At least one proximal rotary cutting structure is defined proximally of the bone engaging threads. The at least one proximal rotary cutting structure is configured to be self-drilling such that a proximal portion of the axial screw body cuts into and advances within a bone of the bone joint as the axial screw body is advanced. A method of inserting the compression screw is also provided.

A bone fastener includes a head, and a screw portion extends from the head. The screw portion includes a shaft and a thread extending along and about the shaft. The thread has a height extending from a root to a tip thereof. The thread also has first and second portions disposed between the root and the tip. The second portion has a porous structure configured to promote bone ingrowth and has a porosity greater than that of the first portion.

Disclosed is a bone screw fixation device including two screws and only two. The bone screw includes: a first screw provided at its proximal end with a head for compressing the bone by an end-abutment; and a second screw provided at its distal end with a bone threading having a first helix pitch and at its proximal end with a bone threading having a helix with a pitch smaller than the first helix pitch.

A bone screw has a first portion including a head. A second portion includes a threaded shaft having a length and a major diameter. The shaft includes a length-to-major diameter ratio of less than about 2.0. The thread has a minor diameter and includes a major-diameter-to-minor diameter ratio of greater than about 2.0. The shaft further has at least one thread including a pitch of greater than about 1.0 mm and defining a pitch cavity for disposal of tissue. Systems and methods of use are disclosed.