The present invention provides, in one aspect, a bone fixation device, the bone fixation device having a shaft, the shaft including a drive end and a tip end, at least a portion of the shaft configured to anchor into bone. The shaft further includes a first non-resorbable section extending from the tip end of the shaft, a second non-resorbable section extending from the drive end of the shaft, and a resorbable section. The resorbable section includes a tip side and a drive side, the resorbable section is between the first non-resorbable section and the second non-resorbable section, with the tip side of the resorbable section coupling to the first non-resorbable section and the drive side coupling to the second non-resorbable section.

An anti-splay bone anchor is provided. The anti-splay bone anchor comprises a screw shank, a screw head and a locking cap member as the primary components. The screw head comprises a first opposing member having a first profile and a second opposing member having a second profile; a through hole for receiving the screw shank there-through. The locking cap member comprises a body, a through hole, a set screw and a first and a second tab. The through hole has threads on the inner surface which is adapted to threadably receive the set screw having threads on the outer surface. The first tab and the second tab, each extending radially outward from the locking cap member, have a third and a fourth profile which are complimentary to the first profile and the second profile, respectively.

The present invention relates to stable fixation of spine segments, allowing for fusion in, e.g., skeletally mature patients. More particularly, the invention relates to a bone fixation device that can be affixed to vertebrae of a spine to provide reduction (or enlargement) capabilities and allow for fixation in the treatment of various conditions, including, e.g., spondyloslisthesis, degenerative disc disease, fracture, dislocation, spinal tumor, failed previous fusion, and the like, in the spine. The invention also relates to a method for delivering and implanting the bone fixation device.

A pivotal bone anchor assembly includes a bone anchor having a capture portion with a frusto-conical outer surface and a horizontal capture recess extending circumferentially around a mid-portion thereof, a receiver having a central bore with a seating surface proximate a bottom opening, and a ring retainer having a retainer aperture with an inner surface that is slidably engageable with the frusto-conical outer surface of the capture structure and a retainer aperture recess extending circumferentially into the inner surface. The assembly further includes a snap ring positionable within the retainer aperture recess with a snap ring aperture smaller than the retainer aperture. Upon securing the ring retainer within the central bore with the retainer aperture centered above the bottom opening, the capture portion is uploadable into the retainer aperture with the frusto-conical outer surface engaging and continuously expanding the snap ring until the horizontal capture recess reaches the retainer aperture recess and the snap ring snaps into the horizontal capture recess to couple the bone anchor to the ring retainer.

Devices, systems, implants and methods for achieving ligament fixation are disclosed. An implant includes a head member and an anchor member coupled to the head member. The implant includes tension member that couples the head member to the anchor member. The head member and the anchor member include a cannulation that receives the tension member therein. The implant may include a coupling member positioned between and coupling the head member and the anchor member, the coupling member including a cannulation that receives the tension member therethrough. Insertion instruments for inserting an implant for ligament fixation are also disclosed. Methods of using an implant for achieving ligament fixation are also disclosed.

Innovative orthopedic implant assemblies and devices are provided. One example assembly includes two implant devices. An example implant device includes two ends oppositely located with a bulbous portion located at one end and a screw portion located at the opposite end. An example second implant device includes two ends oppositely located with a looped portion defining an aperture located at one end and a nail portion located at the opposite end. The nail portion can include a tip and a smooth or substantially smooth portion. The second implant device can be implanted into a bone by striking the looped portion to facilitate the tip and at least part of the nail portion penetrating the bone.

Provided is a nested screw assembly and a related method for fusing a joint between two bones using the nested screw assembly, where the nested screw assembly includes a cannulated outer screw and an inner screw.

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.

Disclosed is a system for delivering a facet screw assembly to a facet joint. The system includes a facet screw assembly and a delivery device. The distal end of the delivery device includes a facet screw engagement feature, which is keyed to a corresponding delivery device engagement feature. In other embodiments, the system may include a facet screw assembly, a facet access guide, a washer sizer tool removably engaged with the facet access guide, a lateral mass decorticator guide slidably and removably engaged with the washer size tool, a washer implant delivery tool removably engaged with the facet access guide and detachably coupled to the facet screw assembly, and optionally an impact handle detachably coupled to the facet access guide, washer sizer tool, and washer implant delivery tool.

A bone fastener comprises a first member defining an implant cavity and a plurality of adjacent grooves. A first band is configured for disposal within the grooves. A second band is configured for disposal within the grooves. A second member is configured to penetrate tissue and includes a head engageable with the first band to provisionally connect the members. The second band is moveable for disposal adjacent the first band to fix connection of the members. Implants, systems, instruments and methods are disclosed.