Abstract: A tibial insert includes a platform defining an upper bearing surface and first and second keels extending downwardly from the platform. Each of the first and second keels includes an angled anterior face. A surgical method for knee arthroplasty is also disclosed.

Abstract: A bicondylar implantable prosthesis resurfaces only the weight bearing portion of the patient's femur. The prosthesis includes a thin shell convexly curved outer articular surface including a medial condyle, a lateral condyle, and an intercondylar bridge, and a concave inner surface of the prosthesis that has at least one transverse ridge extending across the width of the prosthesis. When the prosthesis is implanted on the weight bearing portion of the femur, the entire outer surface of the curved articular surface is sized to resurface substantially only the weight bearing portion and no portion of the patello-femoral joint of the knee. The prosthesis is configured to be implantable by a lateral insertion through a direct lateral approach to a retropatellar region of the patient's knee joint, during which insertion the at least one transverse ridge guides the prosthesis along a laterally resected surface of the femur.

Abstract: An artificial elbow joint including a humeral component made of metal and an ulnar component made of resins for replacing an elbow joint. The humeral component of this artificial elbow joint is configured by a substantially cylindrical trochlea and a stem extending from the trochlea that is inserted into the humeral; and the ulnar component is configured by a joint surface member which receives the trochlea of humeral component in a rotatable manner and a stem which extends from the joint surface member and is inserted into the ulna. The stem of the humeral component is curved gently downward overall so as to comply with the lordotic shape of the humeral, and the trochlea is turnable about the centerline of the stem.

Abstract: The present invention relates to an improved osteosynthesis modular prosthesis, particularly for humerus osteosynthesis, characterize in that it comprises a cup element (7) having a convex surface suitable to be introduced within a bone cavity, particularly within the humerus glenoid cavity, and having a concave surface suitable to contain and keep joined all the bone fragments, particularly fragments of humerus epiphysial pa (2, 3, 4), permitting vascularization and the consequent recovery of bone tissue, a stem element suitable to be introduced within a diaphyseal channel, particularly within humerus diaphyseal channel, a coupling element (9), and coupling means (10, 11) suitable to fix ends of said coupling element (9) respectively at said cup element (7) and at said stem element (8).

Abstract: An injectable intraocular implant including an optics portion and a resilient, flexible haptics portion mounted coaxially with the optics portion and a method for inserting the implant into the eye.

Abstract: A glenoid component for a shoulder prosthesis adapted to be mounted in a glenoid cavity of a shoulder. An elongated keel adapted to engage with the glenoid cavity is attached to the internal surface of the base. The keel extends along a longitudinal axis of the base. The keel includes various configurations of transverse members extending away from the longitudinal axis. The surgeon selects a glenoid component with a keel and transverse member configuration that is anatomically optimized for the patient. Glenoid components properly optimized provide mechanical strength and stability superior to prior art devices. The glenoid components disclosed herein are particularly well suited for use in an anatomical total shoulder prosthesis, but may are also suited to partial shoulder prostheses and reverse shoulder prostheses.

Abstract: A hybrid prosthetic femoral component has an outer bearing surface for engaging a tibial bearing and an inner surface for engaging a prepared distal femur. The inner surface having a distal surface, an anterior surface and a posterior surface, wherein said posterior surface has a first surface structure for allowing tissue ingrowth and the anterior and distal surfaces having a second surface structure for contacting bone cement. The first and second structure have different surface characteristics with different properties wherein the first surface structure is a porous surface and the second surface is a non-porous textured surface. The hybrid prosthetic femoral component further comprises an anterior chamfered surface and a posterior chamfered surface wherein the posterior chamfered surface includes the first surface structure and the anterior chamfered surface includes the second surface structure.

Abstract: An endoprosthesis that includes a composite having a metal matrix and a plurality of stiffening particles in the matrix. The metal of the metal matrix can include titanium, niobium, tantalum, or alloys thereof. The stiffening particles can include a metal core and a thin surface layer. The thin surface layer can include oxides, carbides, nitrides, or combinations thereof.

Abstract: Disclosed is a set of prosthetic components for use in shoulder replacements. A glenoid component having a base and a plurality of coupling members are disclosed. The coupling members are used to couple the base to at least one of the acromion or coracoid process. A polymer insert which is configured to couple to the base member and articulate with a humeral component is provided.

Abstract: In the repair of bone voids and deficiencies, rather than forming a planar, angled surface that could result in a “slip plane,” an implant features a defined geometric pattern such as a stair-step, which mates with a corresponding stair-step pattern formed on the bone. Screws or alternative fasteners extend through one or more of the stair-step patterns, and into the bone, such that local interface around each fastener is substantially transverse to the axis of the fastener, thereby achieving a set of effective, compression bond. As such, shear stresses that might be associated with an angled, planar fixation are converted to compressive forces, leading to a longer life and a reduced need for revision. Although in the preferred embodiment the plurality of surfaces defines a stair-step having right angles, other geometric patterns are applicable, so long as an irregular defect may be made more regular, and/or compressive forces are used to prevent shear stress.

Abstract: A tubular endoprosthesis can be radially deployed between a retracted state and an expanded state. It includes an axially rigid support which has at least one retention opening. The device further includes at least one filamentary connection which has a region for clamping the endoprosthesis, at least partially surrounding the endoprosthesis, and a control region which is connected to the clamping region via the retention opening. The support is permanently fixed to the endoprosthesis.

Abstract: An intraocular telescopic lens assembly including a negative lens having a negative lens optical axis, a positive lens having a positive lens optical axis and a spacer disposed intermediate the negative lens and the positive lens, the spacer being operative to maintain mutual orientation of the negative lens and the positive lens such that the negative lens optical axis is coaxial with the positive lens optical axis.

Abstract: The present invention pertains to accommodating intraocular lens (AIOL) assemblies including a haptics system for self-anchoring implantation in a human eye's annular ciliary sulcus for retaining an AIOL at a desired position along the human eye's visual axis, and an accommodation measurement implant (AMI) for determining accommodation and accommodation forces in an experimental set-up including an animal's eye.

Abstract: A prosthesis for replacing an articulating portion of bone is provided. The prosthesis can include an adaptor operable to replace a portion of the bone. The prosthesis can further include a sleeve coupled to the adaptor. The sleeve can define an offset coupling axis. The prosthesis can also include an articulating portion operable to replace the articulating portion of the bone. The sleeve can be positionable to couple the articulating portion to the offset coupling axis at a predetermined orientation.

Abstract: An interpositional biarticular disk implant (11) having a circular peripheral rim, a generally toroidal axial center opening (13) and convex upper and lower surfaces (15, 17) is implanted between resected concave surfaces of the metacarpal base and the trapezium or other carpal bone in a CMC joint replacement. The disk (11) is anchored in operative position through the use of a flexible cord, such as a harvested tendon that passes through the center opening (13) and through osseous passageways created in the two facing bones.

Abstract: A surgical anchor device for the repair of a torn ligament or tendon, primarily the anterior cruciate ligament in the knee, is used to affix the ligament within a femoral bone tunnel in the distal portion of the femur from the intra-articular surface, the device providing a pulley for a suture, wherein a free end of the suture may be pulled away from the device to draw the suture attached to the ligament graft within the femoral bone tunnel securing the ligament graft within the bone tunnel. Installation of the device is provided by insertion of the device through a tibial hole, through the femoral tunnel out of the lateral femoral cortex, pulling the attached sutures simultaneously to flatten the device against the lateral femoral cortex, attaching one end of the suture to the ligament graft and pulling the other end of the suture until the graft is situated properly within the femoral bone tunnel and tying the free end of the suture to retain the graft within the femoral bone tunnel.

Abstract: Coatings for stents that include a polymer and a drug are provided. The stent's struts are generally linear segments interrupted by a curved or bent segment that contain a drug/polymer coating wherein the concentration of the drug in the coating is greater in at least a portion of the curved or bent segment as compared to the linear segments.

Abstract: An intramedullary stem that provides enhanced distal fixation and flexibility and methods for implanting the stem. Certain embodiments of the stem have primary and secondary flutes (or ridges or wedges). Other embodiments have transitional regions.

Abstract: An intracardiac stent for total cavopulmonary anastomosis has a large-diameter plastic-coated mesh conduit with circular-section lower portion and a progressively flattened upper portion of the same cross-sectional area as the lower portion. Both portions extend along a curved axis. The upper end is bifurcated into two smaller-diameter branches, one of which is also of circular section and extends in an arc along the axis. The other branch is flattened and extends obliquely to the side so as to give the stent the shape of a lopsided Y. In use the upper and lower portions are lodged in the heart with a lower end of the lower portion fitted to the lower vena cava and hepatic vena, the one branch tightly fitted to the left pulmonary artery and blocking the main pulmonary artery, and the other branch fitted to the base of the right pulmonary artery.