A process of forming a fastener with improved threading to resist multi-axial forces and off-axis loading scenarios is provided. The process may include placing first and second mill tools adjacent a shaft of the fastener having a proximal end and a distal end, rotating the shaft and the first and second mill tools, and translating the first and second mill tools along at least part of a length of the shaft to form: a first concave undercut surface oriented toward the proximal end, a first convex undercut surface oriented toward the distal end, a second concave undercut surface oriented toward the distal end, and a second convex undercut surface oriented toward the proximal end.

A perforator-integral suture anchor device is proposed. More specifically, it simultaneously inserts and fixes the suture anchor into the bone while the pilot hole in the bone is forming when an anchor driver is pressed and rotated. The perforator-integral suture anchor device includes the suture anchor having threads formed on an outer circumferential surface thereof, and the anchor driver capable of pressing and rotating the suture anchor, wherein the anchor driver includes a plurality of guide arms protruding forward by being spaced apart from each other relative to a central axis of the anchor driver, and a perforating tip formed at a front end of each of the guide arms, and the suture anchor includes a plurality of female coupling grooves recessed on an outer surface of the suture anchor in a longitudinal direction thereof and allowing the suture anchor to be coupled to the plurality of guide arms.

A method of joining adjacent bone includes providing a medical device having a first implant portion, a second implant portion attached to the first implant portion, and a driver assembly having an instrument adapted to form an opening in bone. The driver assembly is integrally connected to and removably attached to the second implant portion at a connection, distal from the first implant portion. The driver assembly further has a wire driver extending therefrom, distal from the first implant portion. The method further includes inserting the wire driver into a wire driver tool; placing the first implant portion against a first bone structure; inserting the first implant portion into the first bone structure; removing the second implant portion from the driver assembly; using the driver assembly to form an opening in a second bone structure, adjacent to the first bone structure; and inserting the second implant portion into the opening.

A method of repairing plantar plate tears of an individual through augmentation that includes cutting an incision above a damaged area of a plantar plate on an individual, spreading the tissue with a plantar plate joint distractor, inserting a drill insertion member into the plantar drill guide and at a drilling angle over tissue at or near the damaged area of the plantar plate, drilling, with a drill bit and at the drilling angle, into the tissue at or near the damaged area of the plantar plate, attaching a K-wire to a graft, pulling, with the K-wire, the graft across a damaged area of the plantar plate augmenting the damaged area of the plantar plate, and manipulating an interference-type screw through the plantar plate and either or both the K-wire and the graft to engage and compress the graft for fixation.

A bone fusing implant device includes an elongated body extending along a longitudinal direction and having a star-shaped cross-section. The elongated body includes a central through-opening extending through the elongated body's center along the longitudinal direction and an outer surface with alternating elongated ridges and slit openings extending along the longitudinal direction. The outer surface is coated with bone growth enhancing additives.

An embodiment includes a sacroiliac joint bone anchor system comprising: a bone anchor including an outer surface and an inner surface; wherein (a)(i) the outer surface includes a proximal third, a middle third, and a distal third, (a)(ii) the middle third of the outer surface includes at least one aperture that couples the outer surface to the inner surface; (a)(iii) the proximal third of the outer surface includes proximal threads, and (a)(iv) the distal third of the outer surface includes distal threads; wherein (b)(i) the bone anchor is cannulated, (b)(ii) a channel is located on the inner surface, (b)(iii) the channel extends from a proximal third of the inner surface to a distal third of the inner surface, and (b)(iv) the channel provides at least one half a rotation about a long axis of the bone anchor.

A variable length headless compression screw insertion system includes a compression screw and a driver assembly for driving the compression screw into a bone. The compression screw has a bone screw and a compression sleeve coupled to the bone screw. The bone screw includes a proximal end having an external threading threadably received in the compression sleeve, and the compression sleeve includes a proximal end having a predefined drive feature and an external threading. The driver assembly includes a sleeve coupler adapted to threadably receive the external threading of the compression sleeve. A ram driver is coupled to the sleeve coupler and has a predetermined length such that its distal end is shaped to contact the proximal end of the bone screw to prevent translation of the bone screw relative to the compression sleeve.

A fusion device assembly for fusion of a joint, including a fusion device, including a distal end, a proximal end, a radially outward facing surface including threading, a bore extending from the proximal end, at least one flute arranged proximate the distal end, and at least one aperture arranged adjacent to the at least one flute, and a reversibly connected hollow drive shaft for insertion of said device which, in a some embodiments, is hollow to allow addition of supplementary bone graft materials or products, should this be desired, without altering the position of the deployed device.

A surgical instrument comprises an outer sleeve including an inner surface that defines a cavity. An inner shaft is fixed with the outer sleeve and extends within the cavity. The inner shaft includes a drive engageable in a torque interface with a first mating surface of a bone fastener. An inner sleeve is disposed between the inner shaft and the outer sleeve. The inner sleeve is axially fixed and rotatable relative to the outer sleeve. The inner sleeve includes an element connectable in a connection interface with a second mating surface of the bone fastener. Systems, spinal implants and methods are disclosed.

The disclosure provides a meniscus substitute and a knee joint prosthesis with the meniscus substitute. The meniscus substitute includes; a base body, disposed on a tibial plateau or a tibial plateau prosthesis of a tibia; a polymer joint body, disposed on the base body; and a bone screw, disposed in the tibia in a penetration manner and connected with the base body.