Abstract: A surgical system for assisting in the implanting of a glenoid component of a shoulder prosthesis in a patient includes a guide having guide features for guiding application of the bone preparation tool to the glenoid and a series of graphic representations of the glenoid component shown being implanted on the glenoid with different implant positions, each of which is associated with one of the graphic representations.

Abstract: The knee prosthesis with rotary plate comprises a metal base (2) and a tibia plate (3) which are equipped with guide means (22, 22?, 22?, 26, 29, 5, 6, 5?, 9, 50, 51, 52, 13, 15, 18; 34, 34?, 34?, 35, 37, 7, 8, 10, 12, 53, 54, 55, 10?, 17) defining a center of rotation (C,C?) which may be offset from that of the tibia bone axis (YY?), so as to allow the tibia plate (3) to slide in rotation over the said base, the said guide means being positioned a certain distance away from the center of rotation (C, C?).

Abstract: Systems and methods for modifying a shoulder joint configuration exhibiting wear that take into account resultant of forces responsible for the wear of the glenoid surface from geometric characteristics of wear.

Abstract: A glenoid component having an offset center of articulation and associated systems and methods.

Abstract: An ancillary tool for fitting a humeral component of a total or partial elbow prosthesis, comprising a guiding tool (30) for boring a humeral trochlea (T) along a geometric axis (X-X?) of bend of a joint to be equipped with said prosthesis. The guiding tool (30) includes a stirrup element (31) and means (32b, 33b) for securing said stirrup element on the humeral trochlea (T) so that said guiding tool defines a guiding zone that is aligned in the geometric axis of bend for the introduction (F1) of a drill (40), a punch or the like, in the humeral trochlea (T) along said geometric axis of bend. This ancillary tool also comprises at least one stepped template (701, 702, 703) for determining an anterior offset of said geometric axis of bend (X-X?) with respect to a humeral diaphyseal axis (Y-Y?).

Abstract: The surgical device according to the invention comprises both means for per-operative measurement and for memorization of a plurality of positions of a given femoral prosthetic direction and means for per-operative comparison of these positions with the cone of mobility of the prosthesis to be implanted, the position of the axis of revolution of this cone being, during the implantation of the prosthesis, adjustable with respect to the zone of the pelvis where the implantation of an acetabulum of the prosthesis is provided. By using this device, the surgeon can easily and rapidly determine, in the course of the surgical operation, a preferential direction for implanting the prosthetic acetabulum in order to reduce the subsequent risks of dislocations of the implanted prosthesis.

Abstract: An ancillary tool (10) comprising a trial humeral trochlea (202) that is representative of an anatomical humeral trochlea when the trial humeral trochlea is in place with respect to corresponding cubital (SC) and/or radial (SR) articular surfaces and a cut-out guide (30) for cutting an ulna (C) and/or a radius (R), wherein the cut-out guide (30) is adapted to be positioned with respect to the trial humeral trochlea (202). The cut-out guide (30) is also adapted to be positioned with respect to an ulna (C) and/or to a radius (R) equipped with the trial humeral trochlea (202).

Abstract: The ancillary tool according to the invention comprises a plate which defines a convex surface intended to bear against the glenoid cavity of a patient's scapula and which forms a directional guide for a drilling, fashioning or like member. To allow the surgeon to apply this member in a chosen direction, the tool comprises means for adjusting the position of the guide with respect to the plate.

Abstract: A total shoulder prosthesis includes a glenoidal component a substantially hemispherical convex articular surface and of which a center of curvature is adapted, when the prosthesis is implanted, to be located in the glenoid cavity or in the immediate vicinity thereof, and a humeral component defining a concave articular surface adapted to cooperate with the convex articular surface of the glenoidal component. The concave humeral articular surface is defined by a metallic part of the humeral component to thereby reduce a space requirement of the prosthesis.

Abstract: A method for implanting an intra-articular shoulder prosthesis is provided. The method includes removing a proximal portion of a humerus. The proximal portion of the humerus preferably forms a resected portion. The resected portion has a convex outer surface and an inner surface. The method further includes engaging the convex outer surface of the resected portion with a cut surface of the proximal portion of the humerus. The cut surface of the proximal portion of the humerus and/or the inner surface of the resected portion are optionally processed to form a generally concave surface, such as by impacting. In one embodiment, the inner surface of the resected portion is impacted into engagement with the cut surface of the proximal portion of the humerus. The generally concave inner surface of the resected portion forms a concave articular surface to receive an interpositional implant.

Abstract: A humeral nail includes an elongated body, a plurality of interlocking devices and a locking device. The elongated body is at least partially insertable into a medullary canal of a humerus and has a proximal part with a plurality of orifices. The interlocking devices are insertable into the orifices to interlock initially split humeral fragments. The locking device is capable of locking the interlocking devices within the orifices. The locking device is free to move relative to the body between a free passage position in which the locking device enables free passage of the interlocking devices through the orifices, and a locking position in which the locking device locks the interlocking devices in position with respect to the orifices.

Abstract: A compression staple according to an embodiment of the present invention includes two arms connected by a transverse bridge. Each arm includes an anchor portion and a manipulation portion arranged so as to extend from one another and connected by a separation mechanism or breakaway feature. The anchor portion is used to anchor the arm in a bone while the manipulation portion is used to guide the arm in displacement relative to the bridge.

Abstract: A method for implanting a malleolar implant in an ankle joint. A spacer block is positioned between a lower portion of a tibia and an upper portion of an astragalus in the ankle joint. A guide attached to the spacer block is positioned opposite an outer surface of a fibular malleolus. A bore aligned with the guide is formed through the fibular malleolus. The spacer block is removed from between the tibia and the astragalus. A shank of the malleolar implant is engaged with the bore from an inner surface of the fibular malleolus. The shank is advanced into the bore so an inner surface of a head of the malleolar implant engages the inner surface of the fibular malleolus.

Abstract: A tool for placing a malleolar implant for partial or total ankle prosthesis, which includes a spacer block, adapted to be inserted between a tibia and an astragalus of an ankle, a lug secured to the block and extending to a vicinity of an outer surface of a fibular malleolus when the spacer block is in position, and the lug supporting a guide for boring the malleolus from its outer surface.

Abstract: The prosthesis according to the invention comprises a first component, humeral or femoral, presenting a concave surface of articulation and a second, intermediate component presenting first and second convex surfaces of articulation intended to cooperate respectively with the concave surface of articulation of the first component and with a glenoidal or acetabular concave surface of articulation. The second component is hollow and defines a volume for receiving a head of a member belonging to the first component, this member being connected to a metaphyseal part of the first component by a stem, the head being connected to the second component by traversing an opening made in a ring of the second component mounted on a cup of which the outer surface forms the second convex surface of articulation of the second component. The first convex surface of articulation of the second component is formed on the outer surface of the ring, around the aforementioned opening.

Abstract: The distal end part of the retractor according to the invention is provided both with terminal tips for abutment on one of the femoral condylar walls which define therebetween the intercondylar space, and with a wing extending laterally in projection from this end part in order to form a frontal surface for thrust, in a medial-lateral direction, of that part of the quadriceps muscle tendon containing the patella when the tips are in abutment in the intercondylar space. By using this retractor as a lever, the wing efficiently reclines the patella, without turning it completely on itself, entirely exposing one of the femoral condyles. This invention is more particularly applicable to a surgical procedure for implanting a unicompartmental knee prosthesis.

Abstract: This prosthesis comprises a humeral or femoral component and an intermediate component. The concave surface of articulation of the humeral or femoral component is formed by a plate connected by a neck to a part of this component adapted to be anchored in the humeral or femoral medullary cavity. The intermediate component is provided with a member for retaining the humeral or femoral component in a position where the plate is in abutment against the first convex surface of the intermediate component. The retaining member defines a non-circular passage in which the neck is adapted to be displaced as a function of the movements of the humeral or femoral component with respect to the other components of the prosthesis. The retaining member defines with the first convex surface of articulation of the intermediate component a volume for receiving a part of the plate projecting radially with respect to the neck.

Abstract: The glenoidal component for shoulder prosthesis according to the invention comprises a base adapted to be immobilized on a patient's glenoid cavity and an element adapted to be added on the base and defining a convex surface of articulation of which at least a part is globally in the form of a portion of sphere and centred on a geometric point, the base being provided with a part centred on an axis and on which is added the afore-mentioned element. When the component is in assembled configuration, the geometric centre and the afore-mentioned axis are offset with respect to each other.

Abstract: An ancillary tool and method for manipulating and implanting a prosthetic acetabulum including a tool provided, adjacent a distal part, with a head for interacting with an endpiece that is used for gripping the acetabulum and, in its proximal part, with a surface for application of a force along the handle. The endpiece is preferably removably connected to the distal end of the handle. The endpiece includes an elastically deformable ring having an outer face for expanding radially outwardly to initially grip the acetabulum and an opposite face for interaction with the head of the handle, such that upon a force being applied to drive the head into a cavity of the endpiece, the ring is radially expanded to expand the acetabulum in place after which the ring elastically returns to its original shape as the head is removed from the cavity.