An intervertebral implant for implantation between an upper vertebral body and a lower vertebral body is disclosed. The intervertebral implant includes a body portion through which a first and a second pathway pass. A first straight anchor is movable in a straight path through the first pathway and a second straight anchor is movable in a straight path through the second pathway. A locking member is movable between an open position and a closed position to either block or allow the withdrawal of the first and second straight anchors.

A medical implant porous scaffold structure having low modulus, wherein said structure is formed by multiple basic units superposed sequentially along the three-dimensional directions in three-dimensional space, each of the basic units is composed of a quadrangular prism or hexagonal prism having central interconnected pores encircled by four or six side walls, each of the side walls is composed by a “X-type” frame structure formed by two crossed ribs, and the central interconnected pores of the adjacent basic units arranged along the axis direction of the quadrangular prism or the hexagonal prism are interconnected to each other. The structure could not only reduce the modulus of the implant, make the modulus of the implant and strength achieve an ideal match, improve the configuration of traditional metal implants to optimize the distribution of mechanical and weaken the stress shielding effect; but also has a regular interconnected pores structure which is conducive to bone tissue in-growth, and can increase mutual locking of bone tissue and implant and shorten the recovery time of patients.

There are provided various embodiments of medical instruments to perform knee surgery. In one embodiment a finned platform for mounting a cutting block is provided. The finned platform can be used on either a femur or tibia to allow for the proper cuts when performing a knee surgery. In another embodiment, a tibial trial is shown having a fin. The fin is useful to reinforce the bone to reduce the risk of fracture during bone preparation. In another embodiment, a reamer is provided having a plurality of cutting flutes. It may be desirable to utilize a guide with the reamer to allow the reamer to cut a non-circular portion of the tibial bone. In yet another embodiment, a plurality of fixation pegs are provided on the tibial implant to allow for easy removal of such implant if a revision surgery becomes necessary.

A staged expansion of an intervertebral scaffolding system is provided, and also include a laterovertically-expanding frame operable for a reversible collapse from an expanded state into a collapsed state. The expanded state, for example, can be configured to have an open graft distribution window that at least substantially closes upon the reversible collapse.

Prostheses that address stress shielding are disclosed. For instance, a knee prosthesis includes a monolithic femoral component having medial and lateral condylar elements for confronting and engaging a natural tibia or a bearing member of a tibial component, an intercondylar notch between the condylar elements for confronting and engaging a natural patella or a patellar component, and an anterior flange extending proximally from the medial and lateral condylar elements and the intercondylar notch. The femoral component defines a bone-facing surface and a bearing surface, the bearing surface including medial and lateral condylar articular surfaces defined by the medial and lateral condylar elements, respectively, and an intercondylar articular surface defined by the intercondylar notch. A slot extends through the femoral component from the bearing surface to the bone-facing surface, the slot starting at an edge of the femoral component and ending at a location within the anterior flange. Methods of making and using the prosthesis are also provided.

A method for treating a patient diagnosed with a cardio-renal disease or disorder, the method comprising selecting a span of a renal artery having a first internal diameter, an artery wall; selecting a self-expanding stent having a cylindrical outer surface, the stent being configured to have a first external diameter in an unexpanded condition and being capable of expanding to have a second external diameter; implanting the stent in the span of the renal artery, and applying pressure to the at least one renal nerve with the stent, thereby at least partially modulating a function of the at least one renal nerve; then, reducing an elastic modulus of the stent when the stent has the second external diameter.

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.

A biomechanical optimization (BMO) prosthetic implant utilizes a thin cross-section of metallic material that is conformable. Preferably, the BMO prosthetic implant is conformable both at the time of implant in response to manipulation and fixation by the surgeon, as well as during the life of the implant in response to stresses and loads experienced by the implant and thereby communicated and responded to by living bone tissue. For most metallic alloys, the BMO prosthetic implant will have an effective cross-sectional thickness of 4 mm or less, and preferably 3 mm or less. In one embodiment, the BMO prosthetic implant is provided with one or more fins extending from the fixation surface(s) of the implant which preferably includes retaining structures, such as cross-pinned apertures or T-shaped edge ridge.

Biocompatible mesh materials are employed to make implants for repairing or replacing a bone or for soft tissue repair. The mesh materials can be comprised of bioabsorbable materials, non-bioabsorbable materials or bioabsorbable and non-bioabsorbable materials. Pharmaceutical actives, bone growth enhancers and the like can be combined with the implants.

An injection port assembly for a tissue expander and/or mammary prosthesis comprising a composite silicone matrix having embedded fiber layers. The composite matrix materials may cover or extend from the outside perimeter of the injection port assembly and provide self sealing polymeric materials if punctured by a needle. The tissue expander and injection port assemblies and structures may be formed of MR scannable materials. The injection port structures may have palpation lumps for locating the injection port structure subsequent implantation. The injection port structure may be remotely located from the tissue expander and connected thereto via tubing.