An artificial knee joint 1 includes: an insert member 2 embedded in a part of a joint surface of a medial condyle MC or lateral condyle LC of a tibia T; and a bridge member 3 disposed underneath the insert member 2, and having a length that allows both ends thereof to be anchored to a cortical bone of a tibia T.

An intervertebral implant having an open lattice structure formed by a plurality of elongate struts, including a first strut and a second strut. In addition, the body includes a contact surface configured to confront a bone plate, the contact surface including a node defined by an intersection of the first strut and the second strut. The implant includes an enlarged contact member disposed at the node, wherein the enlarged contact member has a substantially flattened outer-facing surface forming part of the contact surface. In addition, the enlarged contact member has an outer perimeter edge that extends beyond the node, and at least a portion of the first strut and at least a portion of the second strut extend inward from the enlarged contact member toward a central core of the body.

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. A fusion passage is defined in an area between the base member, first side member, and second side member. The 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.

Systems and methods to evaluate a joint implant device are provided. The joint implant device can include a socket that at least partially receives a first joint component. The joint implant device can include a socket housing coupled with the socket. The joint implant device can include a first sensor, a second sensor, and a third sensor each disposed between the socket and the socket housing. The joint implant device can include a socket extension coupled with the socket. The joint implant device can include a socket housing extension coupled with the socket housing. The joint implant device can include a fourth sensor disposed between the socket extension and the socket housing extension. At least three of the first sensor, the second sensor, the third sensor, or the fourth sensor can detect a force between the socket and the first joint component.

A system and method for improving assembly of a modular prosthesis, particularly a femoral stem. The system and method may include implementation of assembly systems for modular prosthesis having one or more intermediate components between a pair of end components such as a stem and a head. Grip structures are provided on non-aligned assembly axes and holders are used for each phase to engage appropriate grip structures for joinder of components having aligned assembly axes.

Devices and methods for treating one or more damaged, diseased, or traumatized portions of the spine, including intervertebral discs, to reduce or eliminate associated back pain. In one or more embodiments, the present invention relates to an expandable interbody spacer. The expandable interbody spacer may comprise a first jointed arm comprising a plurality of links pivotally coupled end to end. The expandable interbody spacer further may comprise a second jointed arm comprising a plurality of links pivotally coupled end to end. The first jointed arm and the second jointed arm may be interconnected at a proximal end of the expandable interbody spacer. The first jointed arm and the second jointed arm may be interconnected at a distal end of the expandable interbody spacer.

The present invention relates generally to implants and tools for the fixation or fusion of joints or bone segments. These tools include tissue dilators and protectors. Other tools include broaches used to shape bores in bone. The tools can also include a system for removing an implant from bone. Implants can include assemblies of one or more implant structures that make possible the achievement of diverse interventions involving the fusion and/or stabilization of lumbar and sacral vertebra in a non-invasive manner, with minimal incision, and without the necessitating the removing the intervertebral disc. Implants for fusing both sacroiliac joints of a patient include a long implant that extends across both sacroiliac joints.

The three-dimensional lattice structures disclosed herein have applications including use in medical implants. Some examples of the lattice structure are structural in that they can be used to provide structural support or mechanical spacing. In some examples, the lattice can be configured as a scaffold to support bone or tissue growth. Some examples can use a repeating modified rhombic dodecahedron or radial dodeca-rhombus unit cell. The lattice structures are also capable of providing a lattice structure with anisotropic properties to better suit the lattice for its intended purpose.

A medical implant for cartilage repair at an articulating surface of a joint includes a contoured, substantially plate shaped, implant body and at least one extending post. The implant body has an articulate surface configured to face the articulating part of the joint and a bone contact surface configured to face the bone structure of a joint, where the articulate and bone contact surfaces face mutually opposite directions and the bone contact surface is provided with the extending post. A cartilage contact surface connects the articulate and the bone contact surfaces and is configured to contact the cartilage surrounding the implant body in a joint. The cartilage contact surface has a coating that substantially only includes a bioactive material.

Implants for the fusion or fixation of two bone segments are described. For example, the implants can be used for the fusion or fixation of the sacroiliac joint. The implants can include fenestrations, have a rectilinear overall cross-sectional area, and have a curvature. Some implants can also be used to rescue failed implants.