A hemi-prosthesis implant comprises a replacement-joint part with an articulation surface for tribological pairing with a joint surface of a natural joint counterpart. The articulation surface is embodied with a coating applied on a substrate. The substrate provides a relief for the adhesion of the coating. The relief may comprise one or more of a plurality of grooves, a plurality of teeth, a ribbing, and a roughened surface. The relief may be embodied entirely or partially outside the articulation surface. The replacement joint part may optionally comprise a ventilation feature, and the articulation surface may be formed by injection molding on the substrate. The hemi-prosthesis implant may be part of an implant set that includes both a hemi-prosthesis implant and a total prosthesis implant, either of which can be chosen intraoperatively.

An arthroplasty system including a unicondylar tibial tray implant, a total tibial tray implant, and a tibial bearing configured to individually couple with each one of the unicondylar tibial tray implant and the total tibial tray implant.

The disclosure relates to a replacement member for a shoulder joint replacement comprising an attachment face on one side of the member, a concave joint surface on a side of the replacement member opposite to the side of the attachment face, and a circumferential face connecting the attachment face and the joint surface. A portion of the concave joint surface is connected to at least a portion of the circumferential face via a chamfered or rounded edge.

To provide a sliding member having improved wear resistance, and a method of manufacturing the sliding member. A femoral head ball according to an aspect of the present disclosure includes a composite ceramic containing alumina and at least one oxide other than alumina. A surface roughness Ra of the sliding surface when the femoral head ball slides against a constituent member constituting an artificial joint is not more than 0.01 μm. The sliding surface includes a plurality of recessed portions each having an opening diameter of not more than 2 μm.

An intervertebral implant inserter, comprising: a) a elongated central body having a distal end, a proximal end, an outer surface, and a longitudinal throughbore therethrough, b) upper and lower blades, each blade having a distal end portion and a base portion, the base portion of each blade pivotally coupled to the elongated central body, c) a shaft having a longitudinal axis, wherein the shaft is advanceable within the throughbore and rotatable about the longitudinal axis, the shaft having a distal end forming a pusher having an acicular transverse cross-section, d) upper and lower endplates respectively detachably connected to the distal end portion of a respective blade.

The present disclosure comprises a ball head, a neck part, a cover body, and a fastener, wherein the cover body is in a shape of a thin-walled cup, including a cup buckled and embedded on the femoral neck left after the femoral head is removed and a circle of skirt plates attached to the lower edge of the cup to extend the covering range of the cup to the femoral neck and the intertrochanteric femur; a through hole for a cable to penetrating through is formed in the tail end of each skirt plate, and a limiting clip for limiting the cable for cerclage of the cup is arranged outside the skirt plate; and then stable rigid connection is conducted using a compression ring; and the fastener comprises a screw or an additional perforated steel plate and a cable which is fixed in a cerclage and tension manner.

An orthopaedic implant includes a femoral component having a metallic zirconium and niobium coating disposed therein. A method of making the femoral component using direct energy deposition or co-molding is also disclosed.

The invention relates to a glenoid (shoulder socket) implant prosthesis, a humeral implant prosthesis, devices for implanting glenoid and humeral implant prostheses, and less invasive methods of their use for the treatment of an injured or damaged shoulder.

A reverse shoulder replacement system including a humeral liner defining a split curvature bearing surface that includes a plurality of curvature regions. The plurality of curvature regions are configured to engage a glenosphere of a glenoid implant individually or in combination to provide an improved fit between the glenosphere and the humeral liner.

A knee prosthesis and a method of selecting for a particular patient a knee prosthesis from an inventory of available knee prosthesis or from 3D knee prosthesis models is provided. The method includes the steps of (a) parameterizing a knee prosthesis according to well-defined and independent knee joint compartments, (b) generating a large number knee shapes in the form of 3D knee prosthesis models which reproduce the 3D shape asymmetries of each individual knee, thereby enabling the replication of the knee motion of essentially any patient by generating shapes which vary the shape parameters (surface and dimension) of at least one of those compartments and storing these 3D knee prosthesis models in a database, and (c) studying the patient’s pathology and developing pre -pathological knee prosthesis criteria matching the patient’s needs. Using a planning algorithm, a suitable knee prosthesis may be selected among an inventory of existing knee prostheses or the large number of knee shapes, the prosthesis or shape selected best meeting the patient’s needs as determined by the study.