A helicoil interference fixation system comprising:

a helicoil comprising a helical body comprising a plurality of turns separated by spaces therebetween, the helical body terminating in a proximal end and a distal end, and at least one internal strut extending between at least two turns of the helical body; and

an inserter for turning the helicoil, the inserter comprising at least one groove for receiving the at least one strut;

the helicoil being mounted on the inserter such tin at the at least one strut of the helicoil is mounted in the: at least one groove of the inserter, such that rotation of the inserter causes rotation of the helicoil.

An implant for performing interbody fusion within a human spine, inserters for such an implant, and associated methodology. The implant is preferably formed in situ from at least two separate but lockable members (a base member and a closure member). The base member may be implanted into an interbody space first, after which the end plates may be finally prepared and the base member packed with fusion promoting substances before engaging and locking the closure member. The closure member provides structural support for the adjacent vertebral bodies (along with the base member) and may be selected after implantation of the base member having a specific length, width, height, taper, etc. . . . to ensure an optimal sizing of the implant for desired restoration of disc height, coronal taper, sagittal taper, etc. . . .

An implant for spinal fusion includes a base member, a closure member, pins, and recesses. The base member includes a U-shaped configuration with an open end defined by first and second free ends of first and second side walls extending away from an end wall. The closure member is configured to form an enclosed interior when coupled with the base member. The closure member includes first and second overlapping portions configured to engage the first and second free ends. First and second pins are embedded in a respective one of the first and second free ends. First and second recesses are formed in a respective one of the first and second overlapping portions. The pins cooperate with the recesses to align and frictionally couple the base member with the closure member.

The present disclosure describes embodiments for treating a defect in a tissue, the tissue having internal and external surfaces. A device includes a first portion for positioning at one of the internal and external surfaces for applying a treatment force to the defect. In addition, the device has a second portion for applying a counter-force, where the second portion is operable to be positioned so that the counter-force is applied on the other of the internal and external surfaces, away from the defect so as to substantially avoid application of force at the defect. Furthermore, the device includes a coupling member for connecting the inner and outer portions. Methods of using the device are described, for example in an intervertebral disc having a herniation.

A prosthetic disc for insertion between adjacent vertebrae includes a core having upper and lower curved surfaces, upper and lower plates, and peripheral restraining structure on at least one of the upper plate, the lower plate and the core. Each plate has an outer surface which engages a vertebra and an inner curved surface which slides over the curved surface of the core. The peripheral restraining structure serves to hold the core against a curved surface of at least one of the plates during sliding movement of the plates over the core.

An implant system includes a first portion, a second portion, and a third portion. The first portion includes a hydrogel. The second portion includes a porous material and the hydrogel in pores of the porous material. The third portion includes the porous material. The first portion is free of the porous material. The third portion is free of the hydrogel. Methods of making and using the implant system.

The glenohumeral component of the invention comprises a first side and a second side, which are opposite each other and which, in an implanted state in which the glenohumeral component is free-floating with respect to a humerus and a glenoid of a human shoulder, are in contact respectively with an end portion of the humerus and with a glenoid component intended to be secured to the glenoid. The first side of the glenohumeral component includes a convex articular surface that is designed to articulate with a concave bone surface prepared within the end portion of the humerus. The second side of the glenohumeral component includes a concave articular surface that is designed to articulate with a convex articular surface of the glenoid component. The corresponding shoulder prosthesis is thus reversed. Moreover, the articular interface between the glenoid component, which is secured to the glenoid, and the rest of the prosthesis has double mobility, which provides a greater range of motion between the glenoid and the humerus.

The present invention relates to an articular joint replacement system. The system has first and second components. Each component has a tapered head piece for covering the end of a bone and for acting as an articular surface, an integrally formed screw stem having a length sufficient to extend into the medullary canal, and inwardly angled bone grips affixed to the underside of the head piece to allow solid fixation to the bone by compression press fit. The head piece of the first component is provided with a shaped exterior surface which complements the shaped exterior surface of the head piece of the second component and which allows motion in three planes.

The present invention relates to a surgical kit, a saw guide and other related tools used in the osteotomy for temporary removal of a piece of a first bone structure to gain temporary access for treatment of defects of a second bone structure, as well as methods for designing and manufacturing said tools

A femoral head resurfacing implant is described comprising an external articulating surface and an internal fixation surface. A stem projects from the center of the internal fixation surface. The internal fixation surface comprises a top surface, surrounding and substantially orthogonal to a long axis of the stem, a chamfer surface extending downwardly and outwardly from the top surface and a side surface extending substantially parallel to the long axis of the stem. At least one projection is arranged on the internal fixation surface to provide a predetermined gap between the top surface and/or chamfer surface and a resected head onto which the implant is to be fitted. Furthermore, the side surface constitutes or comprises a cement containment feature configured to restrict or eliminate outflow of cement from the predetermined gap.