A system of prosthetic implants for a total knee replacement procedure is provided. The system includes a tibial component of a knee joint implant, a tibial insert configured to be positioned against the superior side of the platform of the tibial component, a first femoral component of a knee joint implant, and a second femoral component of a knee joint implant.

The present application relates to an assembly for a joint (1, 2, 3, 4), the joint comprising a joint implant (5, 6) between a proximal segment of a limb that is proximal to the joint and a distal segment of the limb that is distal to the joint and in which the joint is configured to allow rotation of the proximal and distal segments with respect to one another about an axis that intersects a first plane, and to inhibit rotation in the second and third plane, both perpendicular to the first plane, the assembly being for subjecting the joint at predetermined angles of the joint rotation in the second and third plane to a defined bending moment to induce a load to the implant that causes a movement of the implant in relation to the bone of the proximal or distal segments.

A surgical navigation system for providing computer-aided surgery. The surgical navigation system includes a handheld surgical tool with computer-aided navigation, a graphical user interface module, and optionally an imaging device. The handheld surgical tool includes a handle that may comprise at least one sensor for detecting orientation of the. A computing device and at least one display device are associated with the handheld surgical tool and configured to display a target trajectory of the handheld surgical tool for the surgical procedure.

The femoral neck preserving hip implant includes a polymer femoral head molded onto a femoral head base, which is attached to a femoral neck rod to be inserted into the femoral neck of a patient. A metal acetabular cup is inserted into an acetabulum anatomy of a pelvis. The femoral head interfaces with the acetabular cup as a smooth plastic-to-metal spherical-surface joint. A main body shaft to be inserted into a femoral shaft has a diagonal hole therethrough located at a center line of the femur's neck to receive the femoral neck rod at a specified angle. A secured lock mechanism in the main body shaft above the diagonal hole is screwed down to compressively engage the femoral neck rod. Both the diagonal hole and the end of the femoral neck rod may have a slight taper. The femoral neck rod also has a radially outward extending flange that forms a contact feature that sits upon the resection plane of the femoral neck to stabilize against axial force loading.

A force sensor provided with a base and a table with legs mounted on the base. The table is movable with respect to the base by a force applied to the table, and the sensor is further provided with a measuring instrument or instruments for measuring a deflection of one or more of the legs, which deflection represents said force applied to the table.

A force sensor provided with a base and a table with legs mounted on the base. The table is movable with respect to the base by a force applied to the table, and the sensor is further provided with a measuring instrument or instruments for measuring a deflection of one or more of the legs, which deflection represents said force applied to the table.

A method of manufacturing an implant is disclosed. The method includes preparing a wax template assembly based upon anatomical characteristics of an implantation site. Post formation of the template assembly, a lamination layer is provided over the template assembly resulting in a laminated template assembly. The lamination layer is composed of at least one polymer dissolved in one or more solvents. One or more coating layers of a pre-defined coating material are provided over the laminated template assembly to prepare a mold. The mold may then be sand-rained to form a sand coated mold. The sand coated mold may be de-waxed and baked for melting out the template assembly to form a de-waxed mold. A casting material is then poured over the de-waxed mold to form a casted mold which is cooled and solidified to form a casted implant which is further heat treated and finished to form the implant.

A prosthetic stem is configured to reduce the perioperative and intraoperative risk of catastrophic medical complications and death that may be caused by BCIS. The prosthetic stem includes one or more internal channels that are configured to self-regulate intramedullary pressure within a prepared bone channel as the stem is inserted into the channel, thus reducing the likelihood of BCIS without sacrificing biomechanics and maintaining a reliable and repeatable implantation process. The stem includes a head and a body, wherein the head is configured to serve as a joint replacement and the body is configured for insertion into the prepared bone channel of a patient. One or more internal channels in the stem are configured to control the pressure within the prepared bone channel during insertion of the stem into the channel, particularly by forming a path through which excess cement may flow as the stem proceeds into the prepared bone channel. By so limiting pressurization of cement during this process, the risk of BCIS complications and other potential harmful effects are reduced while still maintaining sufficient fixation of the prosthetic stem in the prepared bone channel.

A dampening device that can be coupled to a medical implant to eliminate harmful electrical oscillations. The device includes circuity that detects harmful electrical oscillations in the implant. The device also includes circuity that generates cancelling electrical signals that counter the detected electrical oscillations. Alternatively, in a medical implant having a taper junction such as a standard hip implant, resistance welding of the taper junction just prior to surgical implanting may be performed after the appropriately dimensioned components are selected to eliminate a metal on metal interface where corrosion is most likely to occur.

Various embodiments disclosed relate to a method for producing an implant model and associated systems. The method can include receiving patient specific data, producing a preliminary implant model based on the received patient specific data, running a simulation on the preliminary implant model to produce a revised implant model with a range of motion zone using the patient specific kinematics, optimizing the preliminary implant model with a dynamic simulation to determine a cup anteversion angle, analyzing the revised implant model for spino-pelvic risk, and outputting the implant model.