The disclosure provides an articular gasket prosthesis and an articular prosthesis with the articular gasket prosthesis. The articular gasket prosthesis includes an elastic gasket disposed between a first skeleton and second skeleton forming a joint, the elastic gasket including: an elastic matrix, having a first contact surface facing the first skeleton and a second contact surface facing the second skeleton; and multiple synovial fluid passages, distributed in the elastic matrix and communicating the first contact surface and the second contact surface, the multiple synovial fluid passages being disposed according to a predetermined manner to gradually increase hardness of the elastic matrix from a center to an edge and gradually decrease elasticity of the elastic matrix from the center to the edge.

An interspinous posterior device (IPD) is described. The IPD has a body and bone fixation elements on either side of the body, each of said bone fixation elements having a ratchet locking mechanism for fixing the body to successive spinous processes of a mammalian vertebra. Each of the bone fixation elements is independently adjustable by ratcheting it separately and independently of the other bone fixation elements. The body of the IPD has a dynamic configuration and a non-dynamic configuration, wherein the dynamic configuration allows for both extension and flexion of the successive spinous processes and the non-dynamic configuration prohibits extension of the successive spinous processes. The IPD also includes a removable extension restriction block, wherein the extension restriction block can optionally be inserted in the body to prohibit extension or can be removed from the body to allow extension.

A cushion is disclosed for insertion in a patient's knee joint to serve as a buffer between a patient's femur and tibia. The cushion is filled with a substantially incompressible fluid, which can be a foam or a gel or a liquid, like water, which is capable of supporting the entire weight of the patient's body. The cushion is preferably made from a flexible material that allows relative movement between the patient's femur and tibia, while resisting rupture as it supports these two bones as they are moving relative to one another as the knee joint is flexed, bent or extended.

The present invention relates to a discal annular assistance device and the surgical instruments necessary for the insertion and removal thereof. This new device assists the annulus fibrosus following the exeresis of the nucleus pulposus of a lumbar intervertebral disc, to stop accelerated progression towards the discoligamentous instability of a vertebral unit operated on for a nucleus pulposus hernia.

An interbody at least one surface including a plurality of members that are independently configured and dimensioned to move from a first position to a second position is disclosed.

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.

An artificial replacement disk configured to be positioned in between a superior vertebrae and an inferior vertebrae. The upper and lower surfaces match the surface morphologies of the corresponding vertebrae and may be textured to promote bone in-growth. The artificial replacement disk may comprise gripping structures to permit easy manipulation of the artificial replacement disk during surgical procedures.

A method of treating a hip joint of a human patient using a pelvic drill comprising a driving member, a bone contacting and an operating device for operating said driving member. The method comprise the steps of creating a hole passing through the pelvic bone and into the hip joint of the human patient, and providing at least one hip joint surface to the hip joint, through said hole in the pelvic bone of the human patient. In one embodiment the method includes inserting a needle or tube like instrument into the patient's body for filling a part of the patient's body with gas and thereby expanding a cavity within the body.

A prosthesis system comprises plates that can be positioned against vertebrae and a selected resilient core that can be positioned between the plates to allow the plates to articulate. The selected resilient core can be chosen from a plurality of cores in response to patient characteristics, such as age and/or intervertebral mobility, such that the prosthesis implanted in the patient is tailored to the needs of the patient. The plurality of cores may comprise cores with different resiliencies, and one of the cores can be selected such that the upper and lower plates articulate with the desired shock absorbing resiliency and/or maximum angle of inclination when the one selected core is positioned between the plates.

An intervertebral implant for implantation in an intervertebral space between vertebrae. The implant includes a body extending from an upper surface to a lower surface. The body has a front end, a rear end and a pair of spaced apart first and second side walls extending between the front and rear walls such that an interior chamber is defined within the front and rear ends and the first and second walls. The body defines an outer perimeter and an inner perimeter extending about the internal chamber. At least one of the side walls is defined by a solid support structure and an integral porous structure, the porous structure extending from the outer perimeter to the inner perimeter. The porous structure embeds or encapsulates at least a portion of the solid support structure.