Abstract: Methods and apparatuses including apparatuses that can be used in a unicompartmental knee replacement procedure, a bicompartmental knee replacement procedure comprised of two unicompartmental knee replacements, a knee replacement procedure that utilizes a single femoral component and two unicompartmental tibial components, and other types of knee replacement procedures are disclosed. According to one example, an apparatus for guiding a tibial bone cut during knee replacement surgery is disclosed. The apparatus can comprise a mounting portion and a cutting portion. The mounting portion can be configured to couple with an alignment mechanism. The cutting portion can be connected to the mounting portion and can define a capture for a proximal cut. The cutting portion can have an aperture disposed adjacent a first end of the capture.

Abstract: A tibial spacer paddle comprises a spacer block comprising opposing bearing surfaces, an alignment slot extending into the spacer block; and a handle extending from the spacer block. The spacer block can include feet for passively engaging the femur or pegs for actively engaging a femoral component so that the spacer block is linked to the femur while the tibia rotates. A tibial spacer system comprises a provisional component having an alignment tab extending from a body and an alignment indicator located on the body, a femoral component and a pin extending from the femoral component. The pin can engage the alignment tab so that the provisional component is linked to the femur while the tibia rotates. In addition to or alternatively to the alignment tab and pin, the provisional component can include a tibial plate that can be rotationally connected to the provisional component.

Abstract: Disclosed herein are surgical impact tools and methods of use thereof. The surgical impact tools can include a roller assembly, an impact structure, and a tool holder. The roller assembly can be connected to a motor and include a plurality of rollers supported by a respective roller arm. The impact structure can define a spring and an impact cavity including forward and reverse impact surfaces. The impact structure can include a wall comprising a plurality of thread elements connected to the wall and engageable with the roller assembly. Each of the thread elements can include a pair of helical end surfaces and a pair of axially extending surfaces that are engaged by the plurality of rollers. During use rotation of the roller assembly against the helical ends of the thread elements can cause axial movement of the impact structure to apply a load on the spring and generate impact forces.

Abstract: A robotically controlled depth limiter for a reamer, the depth limiter including a cylindrical housing configured to encompass a portion of a driveshaft of a reamer. The cylindrical housing can define a bore extending therethrough. The depth limiter can include a depth stop engaging the cylindrical housing within the bore, and define an opening configured to receive the driveshaft of the reamer. The depth stop can be configured to receive a signal via processing circuitry of a robotic arm to operate the depth stop to limit distal translation of the driveshaft relative to the cylindrical housing to control a cutting depth of the reamer.

Abstract: An orthopaedic tibial prosthesis includes a tibial baseplate with an asymmetric periphery which promotes proper positioning and orientation on a resected tibia, while also facilitating enhanced kinematics, soft-tissue interaction, and long-term fixation of the complete knee prosthesis. The asymmetric baseplate periphery is sized and shaped to substantially match portions of the periphery of a typical resected proximal tibial surface, such that proper location and orientation is evident by resting the baseplate on the tibia. The baseplate periphery provides strategically positioned relief and/or clearance between the baseplate periphery and bone periphery, such as in the posterior-medial portion to prevent deep-flexion component impingement, and in the anterior-lateral portion to avoid undue interaction between the anatomic iliotibial band and prosthesis components.

Abstract: Tool (1) for reaming a trapezium bone (2) when implanting a joint prosthesis (15, 16, 17) in the thumb (4), in which the tool has a head (5) and a handle (6) which extend along an axis (7), in which a connecting piece (8) is provided between the head and the handle, which connecting piece lies at a distance (9) from the axis in such a way that when rotating the head back and forth (13) using the handle the connecting piece moves at a distance from the thumb while the axis runs through the thumb.

Abstract: A bone plate system for use with fasteners for fixation of a fractured bone, including a bone plate having an elongate shaft for placement against the bone. The bone plate further has at least one threaded hole for receiving at least one fastener, with each hole having a central axis. The plate further has a bone contacting first surface, an opposite second surface, a thickness extending in a dimension between said first and second surfaces; and at least one tubular drill guide cap. The drill guide cap is engageable with a first hole of at least one threaded hole, the cap having a threaded exterior, an internal bore, a proximal end, and a distal end.

Abstract: An orthopaedic knee prosthesis includes a femoral component which exhibits enhanced articular features, minimizes removal of healthy bone stock from the distal femur, and minimizes the impact of the prosthesis on adjacent soft tissues of the knee.

Abstract: A system and method for automatic determination of type of pneumatic cuff is disclosed. A system can include a pneumatic cuff with an integrated valve, and a console connectable to the pneumatic cuff. The console can be a pneumatic control system that can include a processor and memory including instructions, which when executed by the processor causes the processor to: inflate the pneumatic cuff through the integrated valve past a threshold pressure such that the integrated valve opens, receive sensor data indicative of a pressure curve during inflation of the pneumatic cuff, compare the pressure curve to stored pressure curves, determine a recommendation, based on the comparison, including information verifying the type of pneumatic cuff attached, and output the recommendation to a user.

Abstract: Devices and methods for performing total knee arthroplasty procedures with kinematic alignment are described herein. A method of performing a total knee arthroplasty can comprise positioning a femoral cut guide adjacent a distal end of a femur, positioning a tibial cut guide proximate a proximal end of a tibia adjacent an anterior surface of the tibia, adjusting a position of the femoral cut guide and the tibial cut guide relative to each other using a tibial positioning device, fixing the position of the femoral cut guide relative to the tibial cut guide using the tibial positioning device, and resecting the femur and tibia with parallel resections using the femoral and tibial cut guides.

Abstract: Systems and methods may use a tensor device in various aspects of a knee revision. For example, the tensor device may include a femoral arm configured to couple with an end portion of a femoral intramedullary canal reamer and a tibial arm moveably connected to the femoral arm, the tibial arm configured to couple with an end portion of a tibial intramedullary canal reamer. The tensor device may include a component or be used to identify a knee gap or a component size for an implant.

Abstract: An augment for supporting an acetabular shell at an acetabulum of a hip bone. In some examples, the augment can include a body having a first surface and a second surface opposite the first surface. The body can extend from a first end portion that is adapted to be fixed to an acetabular shell, to a second end portion. The body can include a first hole and a second hole, each of the first and second holes extending through the body from the first surface to the second surface. The body can be formed of a porous material that promotes boney ingrowth and can further include a trim marker located in between the first hole and the second hole.

Abstract: This disclosure includes apparatus and methods to attach an orthopedic device to a bone. The method can comprise locating a baseplate on a glenoid of a patient, the base plate including at least a first fastener bore, creating a first post hole in the glenoid for locating a first fixation post, the first fixation post including a quasi-spherical head and a porous metal sleeve, and driving the first fixation post through the first fastener bore and into the first post hole. The porous metal sleeve can engage the first post hole and the quasi-spherical head can contact at least the first wall of the first fastener bore to removeably lock the quasi-spherical head to the baseplate. Driving the first fixation post can create an initial compression between the baseplate and the glenoid. The porous metal sleeve can receive bone ingrowth to maintain the initial compression.

Abstract: Disclosed herein are bi-spring surgical impact tools and methods of use thereof. The bi-spring surgical impact tools can include a housing, a shuttle, a pinion, and first and second springs. The housing can define a cavity having a first end and a second end. The shuttle can be located within the cavity and define a plurality of indentations. The pinion can be located proximate the shuttle and have a plurality of protrusions sized to mesh with the plurality of indentations during rotation of the pinion. The first and second springs can be mechanically coupled to the housing and the shuttle. Rotation of the pinion in a first direction can translate the shuttle in a first direction towards the first end of the housing and rotation of the pinion in a second direction can translate the shuttle in a second direction towards the second end of the housing.

Abstract: Disclosed herein are orthopedic impact tools and methods of use thereof. The orthopedic impact tools can include a housing, a tube assembly, a reverse impact plate, an anvil and an impact mechanism. The housing can include a hand grip portion and an impact mechanism housing portion. The tube assembly can include a first tube portion and a second tube portion. The reverse impact plate can be disposed in between the first tube portion and the second tube portion. The anvil can include a forward impact surface. The impact mechanism can include a motor, a piston, a ram, and a rotary to linear conversion mechanism drivingly connecting the motor to the piston. The piston can be disposed within the first tube portion and the ram can be disposed in the second tube portion and movable into contact between the reverse impact plate and the forward impact surface.

Abstract: An orthopaedic knee prosthesis includes a femoral component which exhibits enhanced articular features, minimizes removal of healthy bone stock from the distal femur, and minimizes the impact of the prosthesis on adjacent soft tissues of the knee.

Abstract: The disclosure includes methods and systems for making orthopedic connections where there is unique adjustability to the connection. Illustratively, one embodiment provides a connecting assembly for connecting a plurality of orthopedic components. Such connecting assemblies can include a first orthopedic component that provides a female bore. Additionally, the assembly can include a second orthopedic component that can be or include a male-type connecting member that is positionable in the bore of the first orthopedic component. In one preferred form, the male-type connecting member will be a quasi-spherical member. The quasi-spherical member can include a textured outer surface, e.g., for contacting one or more walls or surfaces in the bore in a fashion that removably locks or helps to removably lock or fix the quasi-spherical member in the bore.

Abstract: A method of implanting a prosthetic component using bone density information comprises positioning a bone density reference proximate a patient, obtaining two-dimensional x-ray images of a bone of the patient including the bone density reference, determining a density of the bone from the bone density reference in the two-dimensional x-ray images, superimposing the density of the bone into a three-dimensional mean bone model to generate a patient-specific mean bone model, determining an interface between the bone and the prosthetic component based on bone density information of the patient-specific mean bone model, and implanting the prosthetic component in the bone at the interface. Determining the interface comprises evaluating bone density at the interface to place the prosthetic component, determining bone load threshold at the interface to avoid damaging the bone, and determining hardness for the prosthetic implant at the interface to avoid damaging the bone.

Abstract: Disclosed herein are rasp adapters, rasp systems, and method of use thereof. The rasp adapter can include a body and a retention element. The body can define a body cavity, a handle opening, and a trunnion bore. The retention element can be located within the body cavity and can include a knuckle and a heal. The knuckle can be located proximate to and movable into and out of the trunnion bore. The heal can be located proximate the handle opening. Movement of the retention element due to a force applied to the heal can cause movement of the retention element and movement of the knuckle into the trunnion bore.