Bone and joint stabilization devices or systems are described that include multiple-layer bodies. The approach offers dramatically improved fatigue life as compared to one-piece spring members that are otherwise similar or comparable. Coordinated improved-strength anchor embodiments, anchor loading tools and methods of use are also described.

A method for forming and abrading an implant void in a sacroiliac joint (“SI Joint”) without the use of a rotary cutting instrument. The method incorporates a multimodal abrading device having abrading surfaces on opposing sides and an open tip comprising a cutting edge. The method includes the step of using the abrading head to cut bone tissue from the SI Joint at an insertion point while simultaneously using the abrading surfaces to decorticate the cortical bone at the insertion point.

An allograft implant for fusing a sacroiliac joint (“SI Joint”), the allograft implant having a body consisting of allograft bone, the body comprising two opposing faces. A graft window is disposed between the two opposing faces, the graft window providing passage through the body between the two opposing faces. The graft window has a cross-sectional area that is about 35% to about 40% of a first cross-sectional area of the body, and about 60% of an area of each opposing face that makes contact with the sacrum or the ilium of the SI Joint.

Various embodiments of implant systems and related apparatus, and methods of operating the same are described herein. In various embodiments, an implant for interfacing with a bone structure includes a web structure, including a space truss, configured to interface with human bone tissue. The space truss includes two or more planar truss units having a plurality of struts joined at nodes. Implants may include biodegradable polymer particles contained within biocompatible fibers. The biodegradable polymer particles may include bone growth promoting agents that are released as the particles degrade over time.

A surgical instrument includes a body having a proximal end and a distal end and defining a lumen extending from the proximal end to the distal end along an axis, the distal end configured to abut an implant, and an anchor rod disposable within the lumen of the body for contacting the implant to secure the implant at the distal end of the body. When the anchor rod is disposed within the lumen of the body in a working configuration, the anchor rod is connected to the body at the proximal end of the body and at the distal end of the body to substantially fix the anchor rod from moving along the axis of the lumen. The body includes a handle, a shaft extending distally from the handle, and a torque limiting mechanism.

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 spinal implant comprises an implant body extending between an anterior surface and a posterior surface, and including a first vertebral engaging surface and a second vertebral engaging surface. The implant body includes an inner surface that defines at least one opening oriented to implant a fastener oblique relative to a lateral axis of a subject body and adjacent an intervertebral space of the subject body. The implant body defining a cavity such that a surgical instrument is connectable with the implant body adjacent the cavity and movable relative to the implant body. Systems, surgical instruments and methods are disclosed.

A sacroiliac joint implant includes an implant structure formed from an elongated base member, an elongated first side member, and an elongated second side member, with an internal support structure extending in an implant plane from the base member to each of the first side member and the second side member. Three or more fusion passages are defined in an area between the base member, first side member, and second side member. Each fusion passage defines a respective open area through the implant to facilitate bone growth across the sacroiliac joint when the implant is properly implanted in the joint.

Devices and methods are provided for optimized spinal fixation using additive manufacturing techniques to create implants with optimized structure for various surgical approaches, anatomies, etc. One exemplary embodiment includes a cage having an X-shaped connection that can bear a load during cage impaction. The cage can be additively manufactured to incorporate features such as variable wall thickness or material density to adjust properties of the cage, including load bearing capability, flexibility, radiolucency, etc. The cage can further include one or more of the connectors disposed between upper and lower endplates. In some embodiments, the cage can include a feature for coupling an insertion device thereto for introducing the cage into the body of a patient. In some embodiments, a plate can be appended to or integrally formed with a proximal end of the cage to assist with securing the cage to vertebral bodies.

Osteogenesis scaffold such as for spinal fusion or an intermedullary nail includes a number of arcuate struts. The scaffold may have a functional modulus of elasticity that is a result of the modulus of the material of the struts together with the architecture of the struts, and may be within the range of 5 GPa and 75 GPa. An anisotropy of a physical property such as stiffness, compressive strength or elastic modulus corresponds to the same physical property of native bone in the vicinity of the intended implantation site.