Abstract: A surgical tool for removing a portion of an implant is provided that includes a housing, a motor contained within the housing and coupled to the housing, and an output shaft having a distal end and a proximal end opposite the distal end, wherein the proximal end is coupled to the motor and the distal end has an opening configured to rotatably engage an implant. The surgical tool further includes a counter-torque sleeve extending around the output shaft having a proximal end and a distal end opposite the proximal end, wherein the proximal end is coupled to the housing and the distal end is configured to couple to the implant relative to the counter-torque sleeve. Upon a rotational force to the implant, the forces transmitted by the output shaft and the counter-torque sleeve are balanced by the coupling of the output shaft and counter-torque sleeve through the housing.

Abstract: Provided are systems and methods for precise intra-operative placement and positioning of components of hip prostheses, particularly with respect to avoiding acetabular prosthetic implant malpositioning in the human hip. In one embodiment the system includes at least a pair of electronic sensors as tilt and direction sensors, which are positioned on the patient's native bone structure and the prosthesis, plus at least one of an electronic angle sensor and an electronic leg length measurement unit, plus a computer processor running application software that is capable of receiving and using information from the various electronic sensors to calculate relevant angular relationships and, optionally, distance relationships. The system electronically measures a living subject's pelvic tilt and position while lying in the lateral decubitus position during the surgery.

Abstract: A bone fastener includes a screw shaft having a proximal portion and a distal portion. The proximal portion is formed by a first manufacturing method and defines a distal face. The distal portion is formed onto the distal face by a second manufacturing method. In some embodiments, systems, spinal constructs, surgical instruments and methods are disclosed.

Abstract: An implant resection system for preparing an implant site to replace a defect in an articular surface of a first bone includes a first guide configured to be coupled generally to the first bone. The first guide includes a body portion defining a channel configured to receive a pin, wherein the pin is configured to penetrate and form a longitudinally disposed bore within the first bone. The implant resection system further includes a second guide configured to be coupled generally perpendicular to the first bone proximate to the defect by way of the bore. The second guide includes a drill bit configured to form an excision site through a portion of the articular surface in preparation of receipt of an implant.

Abstract: Systems, kits, and methods are provided that may be used to assess a prosthetic gap in a resected joint, including an angular alignment of the resected bone surfaces in the joint. A system can comprise a reference spacer assembly comprising a spacer body with an elongated handle and one or two reference spacer plates. A kit can comprise a plurality of spacer bodies and reference spacer plates that can be selected and assembled by an operator to modularly produce assembled reference spacer devices having a range of different configurations. Methods for assessing a prosthetic gap, including a prosthetic gap dimension, a prosthetic gap symmetry, a tibial resection posterior slope, and a distal femoral resection angle, are also provided.

Abstract: A system for generating a model of a patient specific cut guide instrument for harvesting a graft comprises a model of a graft defined by an implant interface surface, a bone interface surface, and a spatial geometry therebetween, the model being specific to a patient.

Abstract: A vertebral insert may include a first linkage, a second linkage, and a third linkage. The first, second, and third linkages may at least partially defining a cavity. The insert may be movable between a collapsed configuration and an expanded configuration, and the movement of the first and second linkages with respect to one another may be configured to reciprocally move the insert between the collapsed and expanded configurations.

Abstract: An end cap is provided comprising a head with a tool engagement portion and a shaft with a tip, wherein the shaft comprises a threaded conical portion starting from the tip and extending in a direction to the head. The thread may be provided with a constant pitch, i.e. with a constant distance between the turns of the thread.

Abstract: In one general aspect, an orthopaedic fixation device includes an inner core and shaft formed of a multi-layered, fiber-reinforced composite. A sensing element is embedded within the multi-layered, fiber-reinforced composite.

Abstract: The present disclosure relates to surgical port assemblies including a plurality of inflatable members for applying a force to a portion of a shaft of a surgical instrument which is inserted through an interior space of the surgical port assembly, and to surgical systems including a surgical port assembly, an endoscopic camera, and a control mechanism for controlling inflation and deflation of the plurality of inflatable members of the surgical port assembly.

Abstract: Disclosed are a device for fixing acetabular fractures involving the anterior/posterior column and acetabulum quadrilateral plate and a usage method thereof. The device includes an iliopectineal plate and an trapezoidal plate or a pubic plate. The iliopectineal plate and the pubic plate are integrally bent to match with a medial anatomic structure of an iliopectineal line and a superior pubic ramus. The shape of trapezoidal plate matches with the acetabular quadrilateral plate, the anterior column and the posterior column to fix the posterior column, an ischium and the acetabulum quadrilateral plate from inside to outside. The device is at the medial surface of the iliopectineal line, which fixes the fragments of the acetabulum quadrilateral plate in an opposite direction and fixes the acetabular fracture stably for improving the quality of reduction and fixation.

Abstract: Systems and methods for positioning a cut guide using navigation-based techniques are discussed. A system for use in an orthopedic surgery on a target bone can comprise a cut guide adjustably positionable onto the target bone via two or more coupling receptacles created on the target bone. The coupling receptacles can include one or more guide members and a plurality of landing members. The system can include an input interface that can receive a target bone representation, and a model receiver module that can receive a generic post-coupling bone model. The target bone representation can include a data set representing two or more landing sites of the target bone, and the generic post-coupling bone model can include a data set representing a bone having two or more coupling receptacles each sized, shaped or otherwise configured to receive and secure the respective coupling feature of the landing members.

Abstract: A surgical cutting guide including a customized, patient-specific contour is disclosed. The surgical cutting guide includes a metallic insert to guide a cutting tool in cutting a patient's bone.

Abstract: A system and method for improving installation of a prosthesis. Devices include prosthesis installation tools, prosthesis assembly tools, site preparation systems, and improved power tools used in implant site preparation, the tools including a secondary motion that preferably includes an ultrasonic vibration.

Abstract: Systems and methods for joint replacement are provided. The systems and methods include a surgical orientation device, a reference sensor device, and at least one orthopedic fixture. The surgical orientation device, reference sensor device, and orthopedic fixtures can be used to locate the orientation of an axis in the body, to adjust an orientation of a cutting plane or planes along a bony surface, or otherwise to assist in an orthopedic procedure(s).

Abstract: A method of positioning a femoral cutting guide on a distal end of a femur establishes at least a first reference plane to perform a distal femoral planar cut. The method includes inserting a mounting member into an intramedullary canal of the femur and coupling a bridge member to the mounting member. The method also includes placing a cutting guide member over a medal anterior portion of the distal femur. The cutting guide member has a first channel that establishes the first reference plane. The bridge member has a bridge channel. A wall of the bridge channel is inserted into the first channel of the cutting guide member. A mounting mechanism generates resistance between the bridge member and the cutting guide member. The resistance is overcome by positioning the cutting guide member relative to the femur.

Abstract: An implantable assembly (21) for a knee joint includes a force absorber assembly (33) connected to a first attachment structure (25) for a tibia and a second attachment structure (29) for a femur. The absorber assembly includes a cylinder body (47) connected to the first attachment structure and a piston (41) connected to the second attachment structure. The piston includes a first portion (39) connected to the second attachment structure and a second portion receivable in a cylinder body opening (43) of the cylinder body, the second portion of the piston being of greater flexibility than the first portion of the piston.

Abstract: A surgical access device includes a seal assembly having an outer seal housing, an inner seal housing, and a seal cooperating with the inner seal housing, the outer seal housing defining a central longitudinal axis and having a longitudinal passage for receiving at least one surgical object therethrough. The surgical access device also includes a bellows configured to engage at least a portion of the inner seal housing cooperating with the seal, the bellows dimensioned and adapted to establish a biasing relationship with the seal. The seal is adapted for lateral movement relative to the central longitudinal axis of the outer seal housing and the bellows is configured to be attached to a proximal wall of the outer seal housing.

Abstract: The present application relates to adaptive surface surgical guiding apparatuses. A surgical guiding apparatus may include one or more rigid portions configured to attach to a first region of an underlying anatomical surface. The surgical guiding apparatus may further include a variable deformable portion coupled to the one or more rigid portions, the variable deformable portion configured to conform to a shape of a second region of the underlying anatomical surface to provide a stable attachment of the surgical guiding apparatus to the underlying anatomical surface. The present disclosure further provides methods for manufacturing surgical guiding apparatuses and uses of the apparatuses for placement onto an underlying anatomical surface.

Abstract: An impaction device (1) intended to impart a blow to a stem, the stem itself being coupled to an element forming an insert intended to be inserted into a receiving element, in particular a ceramic insert in a cup of a cotyloid cavity of a hip; the impaction device (1) including an element (4) forming a barrel defining a channel (5) or an internal chamber that has an opening via which at least part of the stem, in particular a proximal end segment of the stem, can be inserted; means of applying a blow intended to apply to the part of the stem introduced into the chamber a pre-determined blow force; and means (12, 14) for triggering the blow application means.