An implant strip is disclosed. In some cases, the prosthesis can take the form of an implant strip that may be implanted through the use of a surgical procedure that minimizes incision sizes and may be considered less invasive than typical spinal implant procedures. The implant strip includes provisions for implantation, including teeth, spacing provisions, and various shapes.

Described herein is a bone implant including at least one bone-engaging surface designed to mate with an implant-engaging surface of a bone. In the preferred embodiment, the bone-engaging surface of the implant includes a wave pattern comprising at least one peak extending in a proximal direction or at least one valley extending in a distal direction. The implant-engaging surface of the bone also includes a matching wave pattern having at least one peak and valley. Upon mating the engaging surfaces, a bone-implant interface may be created wherein the peaks and valleys of the wave patterns are aligned. As a result, there is good surface contact area at the bone-implant interface which helps prevent loosening or rotating of the implant.

A hip implant has a neck body that connects to a bone fixation body. The bone fixation body has a porous structure with an elongated shape. An internal cavity is formed in the bone fixation body and includes a substance to stimulate bone growth.

A geared cam expandable spinal implant. Rotational motion of a rotating portion is translated into linear motion of a yoke, which moves geared cams at the distal end of the implant to mate with, and walk along, teeth of corresponding racks. The walking of the gear cam teeth along the rack teeth creates a regular rate of implant expansion, reduces initial excessive expansion force applied to the implant, and provides fine adjustment of the expansion rate and force. Spikes, pivotally mounted on the yoke, pivot outward as the implant expands, to a fully-deployed position into engagement with surfaces of adjacent vertebral bodies. The engagement between the deployed spikes and the vertebral bodies prevents inadvertent backout of the expanded implant.

Anchoring devices for rachidian implants, implants, surgical instruments, and surgical systems and methods are disclosed. In some embodiments, an anchor comprises a stiff plate with a longitudinal axis, configured for penetration of its anterior end into a vertebral surface while its posterior end remains engaged with the implant. An implant may include a locking mechanism for the anchor. An anchor may include an abutment configured to abut a complementary abutment of an implant. In some configurations, inserting an anchor in a passage of an implant may displace a locking mechanism, which may resile and lock the anchor in the implant with complementary abutments of the anchor and implant abutting.

A hip implant having two distinct bodies, a neck body and a bone fixation body. The neck body is formed from a solid metal and has an interface for connecting to a femoral ball. The bone fixation body has an elongated shape and is formed as a porous structure that is inserted into an intramedullary canal of a patient.

An interbody spine implant has a PEEK body/cage and removable front, the body with bone screw holes of a diameter smaller than a greatest diameter of an associated bone screw such that received bone screws cut into the PEEK thus locking the bone screws to the body. A major diameter of a bone screw increases towards the head of the screw to cause interference between the PEEK body and the screw. This aids in preventing the screw from backing out of the body. Bone screw holes are angled to project the bone screw from either the top or the bottom of the body for receipt in upper and lower vertebral bone. Preferably, but not necessarily, the direction of the bone screw bores are staggered from one lateral side to another lateral side of the body.

A prosthesis for spinal surgery includes a spacer adapted to be secured into the bone and attached to one of a plurality of configuration plates. The configuration plates are interchangeable and each one is configured to utilize a different combination of bone screws, anchors or both. The prosthesis may further include a retaining mechanism to prevent bone screws and/or anchors from backing out.

A dynamic intervertebral spacer includes a ring which is split on an anterior portion. A posterior portion of the ring acts as a torsion spring. After implantation, the ring is able to act as a spring between superior and inferior vertebral bodies, thus allowing dynamic bone growth in fusion procedures.

For the purpose of providing a flexible implant in a plane direction which prevents a scalp from sinking into an osteotomy line after surgery when joining or reconstructing the bone, implant 1 used for bone joining or reconstruction includes base units 11. The base unit 11 includes a first annular ring 10, a second annular ring 20 positioned opposite the first annular ring, and a first connecting portion 41 connecting the first annular ring 10 and the second annular ring 20. The basic units 11 are linearly linked by a second connecting portion 42 such that a first annular ring row 101 formed by a plurality of the first annular rings 10 and a second annular ring row 201 formed by a plurality of the second annular rings 20 are in parallel, and the basic units form a mesh that is capable of meandering along an osteotomy line.