Assemblies of one or more implant structures make possible the achievement of diverse interventions involving the fusion and/or stabilization of the SI-joint and/or lumbar and sacral vertebra in a non-invasive manner, with minimal incision, and without the necessitating the removing the intervertebral disc. The representative lumbar spine interventions, which can be performed on adults or children, include, but are not limited to, SI-joint fusion or fixation; lumbar interbody fusion; translaminar lumbar fusion; lumbar facet fusion; trans-iliac lumbar fusion; and the stabilization of a spondylolisthesis.

A low profile intervertebral implant for implantation in an intervertebral disc space between adjacent vertebral bodies of a quadruped. The intervertebral implant includes a plate and a spacer that extends from the plate. The intervertebral implant can define geometries that nest with complementary geometries of the vertebral bodies. Further, the plate can include fixation holes that extend along trajectories such that screws inserted through the fixation holes and driven into the respective vertebral bodies can purchase with dense cortical bone.

Spinal implants, spinal implant systems, and methods for inserting spinal implants are provided. The implants can be implanted in an intervertebral space between adjacent superior and inferior vertebrae. The implant includes a superior implant surface having one or more superior positioning grooves configured to receive a corresponding superior positioning rail and an inferior implant surface having one or more inferior positioning grooves configured to receive a corresponding inferior positioning rail when the implant is implanted in the intervertebral space.

An apparatus or a system employs a fixation assembly to stabilize and prevent migration of an interbody fusion device placed between adjacent vertebral bodies, and/or provide supplemental fixation of adjacent vertebral bodies. The fixation assembly may include modular fixation plates insertable and attachable to the interbody fusion device in situ. In certain embodiments, the fixation assembly may include a single fixation plate insertable and/or attachable to the interbody fusion device in situ. In certain embodiments, fixation plates are integrally formed with the interbody fusion device.

Examples of the invention relate to methods, implants, and instruments for compressing first and second bone portions or a bone portion and an implant together.

An expandable includes a base member having a top surface and a bottom surface opposite the top surface, and an adjustable member adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position. The adjustable member has a top surface and a bottom surface opposite the top surface. The top surface of the adjustable member and the bottom surface of the base member form a first angle while the adjustable member is in the first, collapsed position, and the top surface of the adjustable member and the bottom surface of the base member form a second angle while the adjustable member is in the second, expanded position. The first angle is different from the second angle.

Intervertebral implant systems include spacers that may have solid and porous bodies integrally formed together as a single part. The bone-facing sides of the spacers include asymmetric lobes which may include solid and/or porous portions. Bone anchor holes may extend through the spacers and lobes, to receive bone anchors. A helically fluted bone anchor may be received in the bone anchor holes.

An implant includes a first support, a second support rotatably coupled to the first support along a distal end of the implant, and a control assembly configured to move the implant between at least a first, collapsed orientation and a second, expanded orientation, the control assembly includes a control driver coupled to the first support and comprising a head and a shaft, the control driver configured to control relative movement between the first support and the second support, a control member configured to move along the shaft of the control driver, and a first linkage hingedly coupled to the control member and the second support, wherein movement of the control member causes the first support to move relative to the second support.

An acetabular shell component includes a solid substrate, a porous outer layer coupled to the solid substrate, a porous inner layer coupled to the solid substrate, and an inner bearing coupled to the porous inner layer. One or more adjuncts extend outward from the porous outer layer. Each adjunct includes an outer surface that defines a customized patient-specific negative contour shaped to conform to a positive contour of a patient's bone. A method for manufacturing the acetabular shell component using an additive manufacturing process is also disclosed.

Systems and methods are described for correcting sagittal imbalance in a spine including instruments for performing the controlled release of the anterior longitudinal ligament through a lateral access corridor and hyper-lordotic lateral implants.