Abstract: The present invention is directed to compositions having at least one neocartilage particle, juvenile cartilage particle or a combination thereof and a matrix, and methods and devices that include the compositions.

Abstract: A tibial prosthesis has a bearing component configured for an anterior-medial insertion, which advantageously avoids the extensor mechanism of the knee. A tibial tray may include a banana-shaped boss that corresponds to a notch formed in the bearing component. After the bearing component is inserted along the anterior-medial path, the boss is received within the notch by rotating the bearing component with respect to the tibial tray. This rotation seat the bearing component upon the tibial tray in the manner of a fixed-bearing prosthesis. Alternatively, the boss and notch may define angled central axes which allow straight anterior-medial insertion of the bearing component and locking engagement to the tibial tray.

Abstract: A ball joint prosthesis can include a shell, having an outer articular surface of a first material and an open distal end, configured to receive a sealing receptacle. A volume of a second material, within the shell, can be more compressible than the first material. The ball joint prosthesis can have an effective compressibility that is intermediate between a compressibility of the first material and a compressibility of the second material.

Abstract: Tools or other instruments can be used by a surgeon to complete an orthopedic procedure. One tool can include a reference block and a cutting block coupled to the reference block via an adjuster. The reference block can include a body portion and a depth arm having at least one longitudinal groove extending along a side surface. The adjuster can be coupled to the cutting block and configured to move the cutting block along the depth arm. The adjuster can include a roller having an elongate body, the roller including at least one circular guide member and a turn knob positioned along the elongate body, and a resilient member having a base and at least one leg extending from the base, where the adjuster is configured to couple the cutting block to the depth arm.

Abstract: An orthopaedic knee prosthesis is provided including a tibial baseplate component having a distal, bone-contacting surface with one or more fixation structures extending distally therefrom, in which the fixation structures are asymmetrically arranged within the baseplate periphery.

Abstract: Prosthetic apparatuses with probiotic microorganisms to control colonization of pathogenic bacteria are disclosed. The prosthetic apparatus may include a first portion having a first mating surface, a second portion having a second mating surface that conforms to the first mating surface, and at least one strain of probiotic microorganisms retained between the first and second mating surfaces prior to implantation of the prosthetic apparatus.

Abstract: An extramedullary cut guide alignment assembly allows various adjustments to the cut guide without introducing bending stresses in the rest of the assembly. More particularly, the angular orientation of the cut guide with respect to the tibia may be freely changed during use, while maintaining the angular orientation of the proximal fixation arm of the alignment assembly with respect to the proximal tibial surface to which the arm is affixed. To achieve this decoupling of the angular orientations of the fixation arm and cut guide, the proximal fixation arm is pivotably mounted to the cut guide alignment assembly. Thus, the alignment assembly may be adjusted as necessary to achieve a desired angular orientation of the cut guide mounted thereto, while the pivotable junction between the alignment assembly and the proximal fixation arm automatically adjusts to accommodate the changing angular arrangement.

Abstract: In some examples, an apparatus includes a working surface including at least one material removal member. The material removal member is configured to remove at least some of a first portion of a first material. A protrusion extends outwardly from the working surface. The protrusion extends beyond the at least one material removal member by a first distance. The protrusion is configured to inhibit the at least one material removal member from removing at least a second portion of the first material. The second portion has a thickness substantially equal to the first distance.

Abstract: A delivery device for an osteochondral graft comprising a tube, a plunger and a graft retention assembly is disclosed. The tube has a bore having an inside diameter and extends from a proximal end to a distal end. The inside diameter of the bore is sufficient to accept an osteochondral graft of a desired diameter. The tube has a set of apertures located adjacent the distal end of the tube. The plunger is slidably disposed within the bore of the tube. The graft retention assembly comprises a collar and a set of tabs. The graft retention assembly is attached to the tube such that the tabs are disposed within the apertures of the tube. The tabs are biased towards each other but are capable of being displaced away from each other to receive or release the osteochondral graft.

Abstract: Dental compositions are disclosed. A dental composition can include a reaction produce of a reaction mixture comprising a first mixture and a second mixture. The first mixture can include a ceramic based biomaterial, and the second mixture can include mineral trioxide aggregate and a phosphoric acid monomer.

Abstract: A bone anchoring device for securement to a bone. The device includes an anchor, a receiver, a retainer and an insert. The receiver includes a seating surface defining a cavity communicating with the exterior of the receiver through a first opening configured to receive the connection head of the anchor therethrough. The retainer includes at least two discrete retaining members configured to engage with the receiver seating surface when they are captured between the connection head and the seating surface. The insert is disposed within the receiver and configured to frictionally engage the connection head. The insert includes a main body and at least one pin protruding from the main body, for circumferential insertion between two adjacent retaining members of the retainer.

Abstract: An orthopedic plate comprising, a frame portion and a bearing rotatably coupled with the frame portion, wherein the bearing defines an opening configured to receive a fastener for fastening the orthopedic plate to a body, wherein the bearing includes an outer surface that is eccentric to the opening such that a position of the opening with respect to the frame portion is adjustable as the bearing rotates.

Abstract: An orthopaedic knee prosthesis includes a tibial bearing component with articular features which operate to protect adjacent soft tissues of the natural knee, promote and/or accommodate desired articulation with an abutting femoral component, and facilitate expedient and effective implantation by a surgeon.

Abstract: A patellar resection instrument has an integral depth adjustment assembly that is easily, intuitively, and intra-operatively adjustable between a plurality of discrete positions. Each position corresponds to a particular, known depth of resection, and this depth may optionally be inscribed on the depth adjustment knob for easy visual selection and/or confirmation of the resection depth. The depth adjustment assembly provides positive tactile feedback as the stylus is moved between positions. The unique configuration of the depth adjustment assembly maintains the resection depth stylus in a chosen position throughout the patellar resection procedure, even if the procedure causes vibration or other forces to be transmitted to the patellar resection instrument.

Abstract: A bone fixing system useful for holding bone in position, and a method for installing the same are disclosed. The ends of a conformable ligature are passed around bones, bone grafts, tendons, plates, rods, fasteners, or other anatomical or implanted structures, and the like to form a loop extending from a first portion of the blocking body. The ends of the conformable ligature are passed through the blocking body and extend out a second portion of the body. The ends may be attached to a tensioning tool and a selected tension may be applied. A closure member may engage an engagement portion of the blocking body to create a friction force to hold the conformable ligature in place without significant movement relative to the blocking body.

Abstract: A surgical instrument including an elongate member, a support for engaging a rod receiving element, and a connection between the elongate member and the support. This connection comprises a pivotal articulation, and the elongate member is connected to the support via the pivotal articulation so as to be able to pivot independently around at least two perpendicular axes. The elongate member is also longitudinally movable with respect to the support. The elongate member has, at a first end, a device for holding a rod.

Abstract: A bone implant surgery system is used for simulating a dental surgical procedure having a display that shows placing a simulated bone implant at a simulated implant site on a living body by using a simulated surgical tool holding the simulated bone implant. At least one hand-held haptic device is used to control the surgical tool and at least one controller is specifically configured to cause movement of the surgical tool on the display based on motions of the haptic device and to cause haptic feedback to a user holding the haptic device depending on the position of the surgical tool on the display. A user may then review and evaluate the results of the surgical simulation.

Abstract: An apparatus and method are provided for manufacturing an orthopedic prosthesis by resistance welding a porous metal layer of the orthopedic prosthesis onto an underlying metal substrate of the orthopedic prosthesis. The resistance welding process involves directing an electrical current through the porous layer and the substrate, which dissipates as heat to cause softening and/or melting of the materials, especially along the interface between the porous layer and the substrate. The softened and/or melted materials undergo metallurgical bonding at points of contact between the porous layer and the substrate to fixedly secure the porous layer onto the substrate.

Abstract: An orthopaedic tibial prosthesis includes a tibial baseplate sized and shaped to cover substantially all of a resected proximal tibial surface, and a tibial bearing component sized to leave a posteromedial portion of the tibial baseplate exposed when the tibial bearing component is mounted to the baseplate. The exposed posteromedial portion of the tibial baseplate includes a chamfered profile which cooperates with a correspondingly chamfered profile at a posteromedial edge of the tibial bearing component to create a substantially continuous chamfer extending from the resected tibial surface to the medial articular surface of the tibial bearing component. Advantageously, this chamfer leaves an absence of material (i.e., a relief or void) at the posteromedial edge of the tibial prosthesis, thereby enabling deep flexion of the prosthesis without impingement between the tibial prosthesis and adjacent anatomic tissues or prosthetic structures.

Abstract: An electromedical device for the non-invasive reduction or removal of subcutaneous adipose tissue, comprising an energy source which provides a high-frequency alternating current, comprising at least two individual emitters which are fed by the energy source and which are designed to emit high-frequency electromagnetic waves into subcutaneous adipose tissue, and comprising a directivity control which is coupled with the individual emitters and which controls the individual emitters in such a way that, by direction and field concentration of the high-frequency electromagnetic waves emitted by the individual emitters, a total electromagnetic field with a desired field geometry can be produced in the subcutaneous adipose tissue.