Abstract: According to one example, a tibial replacement assembly for a knee arthroplasty can be configured to couple to a resected proximal surface of a tibia of a human knee. The tibial replacement assembly can include a tibial tray and a first spike. The tibial tray can include a proximal surface and a distal surface opposing the proximal surface. The distal surface can be configured to be disposed on a resected proximal surface of a tibia. The first spike can be removably secured to the tibial tray and can extend generally distally away from the distal surface. The first spike can be configured to extend beneath the resected proximal surface of the tibia.

Abstract: An orthopaedic implant system includes a set of provisional orthopaedic implants having different implant sizes, in which each provisional implant facilitates an in selection of the next-smallest implant size without removing the provisional implant from the bone. All of the implant sizes share a common sagittal configuration of distal and anterior bone contacting surfaces, but have variable sagittal configurations only in the posterior bone contacting surfaces. Thus, where a relatively larger femoral provisional component is mounted to a femur, changing to a smaller provisional component (i.e., “downsizing”) can be accomplished by recutting only two of live original femoral cuts. Cut slots provided in each provisional implant are sized and positioned to correspond to the posterior bone contacting surface geometry of the next-smallest provisional implant size.

Abstract: The present disclosure provides a shoulder prosthesis. The shoulder prosthesis includes a glenoid component, a humeral component, and an articulation component. The glenoid component includes a glenoid body having a proximal side and a distal side, the proximal side shaped to engage with a resected portion of a glenoid cavity. The humeral component includes a humeral body having a proximal side and a distal side, the distal side shaped to engage with a resected portion of a humerus. The articulation component is positionable between the distal side of the glenoid component and the proximal side of the humeral component, the articulation component configured to be maintained between the glenoid and humeral components, after implantation, by at least one of a deltoid muscle and a rotator cuff.

Abstract: A prosthetic system that includes a prosthetic implant acrd a support structure secured to an inner surface of a cavity of a bone is disclosed. The support structure may comprise a pair of partially hemispherical components arranged in spaced apart relationship thereby defining a channel between the pair of components.

Abstract: An arthroplasty trial assembly for a human shoulder can include a first implant securable to a first bone and a second implant securable to a second bone. The second implant can include a body, a stem, an articulation component, and a sensor. The stem can extend from the body, and the stem can be insertable into the second bone. The articulation component can be coupled to the body opposite the stem, and the articulation component can be articulable with the first implant. The sensor can be connected to the articulation component and can be configured to monitor a condition of the second implant and can produce a sensor signal as a function of the condition that is indicative of stability of the shoulder.

Abstract: The present disclosure provides a shoulder prosthesis. The shoulder prosthesis includes a glenoid component, a humeral component, and an articulation component. The glenoid component includes a glenoid body having a proximal side and a distal side, the proximal side shaped to engage with a resected portion of a glenoid cavity. The humeral component includes a humeral body having a proximal side and a distal side, the distal side shaped to engage with a resected portion of a humerus. The articulation component is positionable between the distal side of the glenoid component and the proximal side of the humeral component, the articulation component configured to be maintained between the glenoid and humeral components, after implantation, by at least one of a deltoid muscle and a rotator cuff.

Abstract: Two spaced bodily tissues are approximated with a surgical tensioning device comprising a resilient member and a pressure locking device. The method comprises a step of routing one end of a length of suture through both spaced bodily tissues and inserting the suture end into and through the pressure locking device. The suture is then tensioned by pulling on the suture end passing through the pressure locking device. Responsive to tension changes in the suture, the pressure locking device is actuated by moving at least one surface in the pressure locking device to clamp the suture in position.

Abstract: Implementations described herein include a system for guiding medical waste fluid into a medical waste collection canister. The system includes a manifold and a filter. The manifold includes a top surface and a sidewall extending from the top surface in a first direction. The top surface and the sidewall define an interior chamber of the manifold. The top surface includes an inlet port and a vacuum port disposed therein. The inlet port connects to a source of medical waste fluid and the vacuum port connects to a vacuum source. The manifold can be formed from a first polymer. A filter is positioned within the interior chamber of the manifold and immediately upstream of the vacuum port so as to filter air flowing into the vacuum port. The filter extends away from the top surface of the manifold in the first direction and the filter is formed from a second polymer.

Abstract: Systems and methods and augments for supporting an acetabular shell at a hip bone. An example system of modular augments can include first and second augments, each having a body extending from a respective first end portion to a respective second end portion. The first augment second end portion can include a first coupling element and the second augment first end portion can include a second coupling element. Together the first and second coupling elements can form a coupling mechanism to join the first and second augments together. In some examples, the coupling mechanism can include a bulbous tip portion and a recess to receive and retain the bulbous tip portion.

Abstract: A ratcheting driver can be configured to selectively transmit a torque to a fastener. The driver can include a handle, a geared body, and a shaft. The handle can include a housing, a pawl, and a biasing element. The housing can include a central bore and a shaft bore extending through a distal portion of the housing. The pawl can extend radially inward from the housing into the central bore. The biasing element can engage the housing. The geared body can be rotatably engageable with the pawl to allow rotation of the geared body relative to the handle in a first direction and to limit rotation of the geared body relative to the handle in a second direction, where the biasing element can be engageable with the geared body to bias the geared body distally.

Abstract: Illustrative methods and systems for customizing a pre-manufactured acetabular shell to a specific patient are described herein. An illustrative method can include positioning a provisional shell at an acetabulum of the patient, the provisional shell having a plurality of selectable openings. The method further including marking, based on the assessing of the bone, a patient-matched hole location on a provisional liner that corresponds to one of the plurality of selectable openings in the provisional shell. With the provisional liner marked, the method can further include removing the provisional liner from the provisional shell and positioning the provisional liner in the pre-manufactured acetabular shell that is to be implanted in the patient. Using the provisional liner as a guide, the method can include forming a hole in the acetabular shell corresponding to the marked patient-matched hole location on the provisional liner.

Abstract: A femoral head press can comprise: a frame having first end second ends; a clamp connected to the first end to define a holding plane; a mechanical drive mechanism mounted to the second end and having a drive axis; a ram connected to the second end; and a femoral head cup connected to the ram; wherein the mechanical drive mechanism is configured to drive the ram along the drive axis substantially perpendicular to the holding plane to advance the femoral head cup toward the clamp. A method for assembly a femoral head to a stem neck can comprise: attaching a clamp of a frame of a femoral head press to a neck of a femoral stem; connecting a femoral head to a cup connected to a ram slidably engaged with the frame; and actuating a mechanical drive mechanism coupled to the frame to advance the cup toward the neck.

Abstract: A method of creating a patient specific instrument (PSI) for use in knee replacement surgery is described which includes performing at least two two-dimensional X-ray scans of a bone, each of the X-ray scans being taken from different angular positions, generating a digital bone model of the bone based on the X-ray scans, planning the PSI based on the digital bone model, including determining locations for one or more anchor points on the PSI which are adapted to abut a surface of the bone, the determined locations of the anchor points being disposed on the PSI at locations corresponding to areas of expected high accuracy on the digital bone model generated by the X-ray scans. The areas of expected high accuracy include at least a peripheral bone contour in at least one of the angular position of the X-ray scans. A suite of such PSI instruments is also described.

Abstract: A method of anatomically positioning screw holes in an acetabular implant that can be used in surgery, such as a total hip arthroplasty. In some examples the method can be used to position holes in a shell of the implant. The method can include, for example, obtaining anatomic data including data defining an arch of bone behind an acetabulum of the living being, the arch of bone extending from a superior anterior portion to an inferior posterior portion of the acetabulum. The method can further include positioning a first series of holes along a first arched line within the acetabular shell, the first arched line determined based on the anatomic data for the arch of bone proximate the acetabulum of the living being.

Abstract: Embodiments provide methods, apparatuses, and systems for fixation of a fractured bone. In various embodiments, the systems and plates may provide elastic suspension of the receiving holes relative to the osteosynthesis plate. This elastic suspension may promote load distribution between the screws that connect a bone segment to the plate, thereby reducing stress risers and load shielding effect. In addition, stress at the screw holes, and within the construct as a whole, is reduced by incorporation of these elastic elements in the plate. Additionally, in some embodiments, for instance if fracture healing by callus formation is desired, elastic suspension of the receiving holes relative to the osteosynthesis plate may enable small, controlled amounts of relative motion between bone fragments connected by the plate, which may promote fracture healing by callus formation.

Abstract: A method of depositing a relatively thin film of bioinert material onto a surgical implant substrate, such as a dental implant. Chemical vapor deposition (CVD) may be used to deposit a layer of tantalum and/or other biocompatible materials onto a solid substrate comprised of an implantable titanium alloy, forming a biofilm-resistant textured surface on the substrate while preserving the material properties and characteristics of the substrate, such as fatigue strength.

Abstract: The present disclosure relates to prosthesis systems having trays and liners having an asymmetrical locking mechanism to bias the strength of the liner to resist loading forces and associated methods. The tray has a lateral groove disposed in an inner surface of a lateral circumferential portion of the tray and a medial groove disposed in an inner surface of a medial circumferential portion of the tray. The liner has an upper segment and a lower segment. The liner has a locking portion for lockingly engaging the tray that includes the lower segment. The locking portion has a lateral toe positioned generally diametrically opposite a plurality of resiliently deformable medial fingers defined therein. The liner and the tray are engageable in a lateral-to-medial direction so that the plurality of medial fingers can resiliently deform to engage the medial groove subsequent to engagement of the lateral toe within the lateral groove.

Abstract: An external fixation clamp for receiving a fixation element includes an inner jaw and an outer jaw movable between an open position that permits the fixation element to be placed between the inner and outer jaws and a closed position that restricts removal of the fixation element from between the inner and outer jaws. A latch assembly may cooperate with the inner and outer jaws to secure the jaws in a closed position. The latch assembly may comprise a latch and a latch biasing member. The latch may be configured to translate linearly relative to one of the inner and outer jaws, and the latch biasing member may have a first higher level of stored energy when the inner and outer jaws are in the open position and a second lower level of stored energy when the inner and outer jaws are in the closed position.

Abstract: Surgical helmet assemblies have a helmet enclosure shaped to encircle a head of a user. The helmet enclosure retains a fan and includes a brow bar portion at a front of the helmet enclosure that is shaped to extend along a brow or a forehead of the user and having a light positioned therein. The helmet enclosure also includes a stabilizer extending downward from the helmet enclosure in front of the ears of a user, a face shield that is transparent and coupleable to at least the brow bar portion, a headband shaped to extend across an occiput region of the user's head, and a surgical garment for covering at least the head and shoulders of a user in use. The brow bar portion includes vents disposed therein to direct airflow pushed through the helmet enclosure from the fan onto the user. The face shield is coupleable to the helmet enclosure by one or more of a hook and loop fastener on the helmet enclosure or the stabilizer and a post protruding from the brow bar portion.

Abstract: In a surgical power tool that includes an electric motor positioned in a housing and a movable element extending from the housing and operatively actuated by the electric motor, a controller can repeatedly interrogate for faults a plurality of components in or on the housing, such as the electric motor, the controller, a battery, a trigger, and a mode switch. Upon finding a component in a fault condition, the controller can engage a critical error handler that disengages the electric motor, disables at least some of the plurality of components, and directs a microprocessor in the controller into a safe software state. Upon engaging the critical error handler, the controller can further write to a memory an error code corresponding to which of the plurality of components is in the fault condition. The error code can be accessible via a wired or wireless connection.