Abstract: An implant insertion tool for use during a surgical procedure to implant an acetabular cup component into a surgically-prepared acetabulum of a patient's hip includes a metallic elongated shaft, a removable polymeric grip, and a locking nut to secure the grip to the elongated shaft. Such a modular design allows the implant insertion tool to be dissembled prior to sterilization.

Abstract: Disclosed herein are patient-specific cutting guides for guiding a surgical instrument for resecting a portion of a glenoid of a patient. The cutting guides include a base portion having a contact surface shaped to substantially match at least a portion of a cavity of the glenoid. The base portion has a guide hole extending therethrough in which the guide hole has an axis coaxial with an axis of rotation. The cutting guides include one or more stabilization members extending outwardly from the base portion and having a contact surface shaped to substantially match an outer surface of a portion of a scapula of the patient. The stabilization members are oriented to take into account the patient's anatomy in orienting and stabilizing the guide with respect to the glenoid. The guide hole of the base portion is for guiding the surgical instrument to create a guide hole in the glenoid.

Abstract: An implant guide system for hip replacement surgery includes an angle guide member and a first positioning plate. The angle guide member has a body and a protrusion that are substantially connected to each other. The body has a curved surface corresponding in shape to a surface of a patient's acetabulum. The protrusion has a first through hole extending to the body. An acute angle is defined between an extension line of the first through hole and a flat surface of the body. The first positioning plate has a first holding portion and a first spacing portion that are substantially connected to each other. The first spacing portion has a second through hole, a third through hole and a fourth through hole that are parallel to each other.

Abstract: The present disclosure includes a surgical insertion tool that may have a handle having a longitudinal axis, an extended arm that may be fixed to the handle and have at least two bends to avoid bony features during insertion of an instrument, and an attachment feature configured to attach the instrument to the insertion tool such that the longitudinal axis of the handle intersects the instrument.

Abstract: Methods, systems and devices for pre-operatively planned shoulder surgery guides and implants. Pre-operative planning methods for designing glenoid placement guides and depth-control pins based on considerations of multiple factors affecting the outcome of shoulder surgery. Methods of using surgery guides and implants, including glenoid placement guides and depth-control pins, in patients undergoing shoulder surgery.

Abstract: Disclosed is a surgical targeting device for assisting placement of an elongated guidance member in a bone. The targeting device comprises a bottom portion having a dome-shaped convex outer surface and comprising a guidance through-hole extending along a guidance through-hole central axis for receiving the guidance member. A top portion of the targeting device is configured to be gripped by a tool. Further, a surgical system is disclosed which comprises the surgical targeting device.

Abstract: A surgical instrument comprises a member defining a longitudinal axis and being connectable with a spinal implant. A handle is connected with the member. An image guide is connected with the member for orientation relative to a sensor to communicate a signal representative of a position of the spinal implant. The image guide is rotatable about the axis relative to the member and is disposable in at least one fixed position with the member. Systems, implants, spinal constructs and methods are disclosed.

Abstract: Technologies for aligning an acetabular prosthetic component in a patient's surgically prepared acetabulum include a reference sensor module securable to the patient's bony anatomy, an inserter sensor module securable to an acetabular prosthetic component inserter, and a display module. Each sensor module generates sensor data indicative of the orientation of the sensor module and/or structures to which the sensor module is coupled. The display module receives the sensor data from the sensor modules, determines the orientation of the acetabular prosthetic component relative to the patient's bony anatomy, and displays indicia of the determined orientation on a display.

Abstract: A computer-aided method of pre-operative planning of hip joint replacement is provided for establishing, from patient-specific images, femoral and acetabular implant sizes and cut planes. Image slices of a patient's hip joint are obtained. Coordinate positions of selected femur and acetabulum points (e.g., femoral head center, major trochanter midpoint, femoral shaft midpoint, acetabular rim high points and lowest point) in the images are marked, which allows the planning tool to perform a best fit analysis to offer a range of suitable implant and surgical cut plane parameters for selection by a surgeon. Patient-specific surgical jigs can then be constructed for the proximal femur and acetabulum of the hip joint corresponding to a surgeon selection between standard, mini, short-stem, and resurfacing hip replacement components and in accord with the surgeon-selected parameters.

Abstract: A handheld surgical instrument comprising an energy storage element, wherein the energy storage element is a spring coupled to the impacting mechanism, an impacting mechanism has a tip configured to impact a bone, wherein the tip includes a tapered point, a power transmission mechanism is configured to transmit energy from the energy storage element to the impacting mechanism, wherein the power transmission mechanism includes a semi-flexible metal wire guided by a hollow shaft, wherein the hollow shaft includes a distal end, the semi-flexible metal wire is includes a bend toward the distal end, a trigger mechanism is configured to release energy from the energy storage element, wherein the bend includes an angle between 14 degrees and 46 degrees, wherein the trigger mechanism includes a manual lever which, when actuated, simultaneously retracts the tip and charges the energy storage element.

Abstract: The invention relates to a bone implant (1) for correcting an incorrect position of a bone, the bone implant (1) having a first portion (2) for attachment to a first bone portion (3) and a second portion (4) for attachment to a second bone portion (5), the bone implant (1) being prepared so that, when fixed to the bone, it orients the first bone portion (3) and the second bone portion (5) with respect to one another and keeps said portions at a distance from one another, the bone implant (1) having such a geometry and being adapted so as to force a predetermined orientation of the second bone portion (5) relative to the first bone portion (3). The invention also relates to a method for producing such a bone implant (1).

Abstract: A patient specific guide for hip replacement for patients undergoing hip replacement surgery. The guide works for correction of the acetabulum defects based on a finite element model, which detect the bone quality and guide the surgeons for the optimum screws trajectories. The guide surface reflects the acetabular morphology which provide a correct posting of the cup, especially for the complex case as bone loss, severe fractures and tumors. CT-scan images are used to construct the 3D model of the acetabulum bone, therefore a finite element and virtual surgery planning methods are applied to create the electronic file of the patient specific guide. In final step, the 3D printers are used to produce the patient specific guide.

Abstract: An implant insertion tool for use during a surgical procedure to implant an acetabular cup component into a surgically-prepared acetabulum of a patient's hip includes a metallic elongated shaft, a removable polymeric grip, and a locking nut to secure the grip to the elongated shaft. Such a modular design allows the implant insertion tool to be dissembled prior to sterilization.

Abstract: An acetabular cup guide can include a distal end (11) shaped to allow removable connection to a surgical instrument (16), a proximal end including one or more contact surfaces (4, 5) shaped to conform to an acetabulum, and a central proximal-distal axis extending through the acetabular cup guide. At least one of the one or more contact surfaces can be configured such that it is deflectable towards the central proximal-distal axis in order to reduce an axial cross-section of the acetabular cup guide.

Abstract: Planning tools for surgery, particularly for THA, are provided. Images of musculoskeletal structure of a patient (e.g. associated with respective planes and in a same or different functional position) may be displayed together and via co-registration and spatial transformations, 3D implants or other objects may be rendered and overlaid in a same position correctly with respect to each image. The 3D implant may be fit (e.g. via handles or automatically using image processing) to an existing implant in the patient and moved to other positions, for example, to measure the existing position or plan for an initial or new position. Measures may be represented with respect to various planes associated with the respective image and/or with respect to an existing implant.

Abstract: Surgical systems and methods are disclosed for creating a 3D model of a patient's affected area using an imaging device, using the model to determine an implant orientation and position, creating patient-matched instrumentation, placing the patient-matched instrumentation on the patient's anatomy, registering a computer-assisted surgical tool, and acquiring registration information. The methods and systems also include associating the surgical tool with a computer to perform a computer assisted surgery. Also disclosed are embodiments of patient-matched instrumentation to acquire registration information.

Abstract: Disclosed herein are a system and method that may help place or position a component, such as an acetabular cup or a femoral component, during surgery. An example system may iteratively register a plurality of two-dimensional projections from a three-dimensional model of a portion of a patient, the three-dimensional model being generated from a data set of imaging information obtained at a neutral position. An example system may further score each two-dimensional projection against an intra-operative image by calculating a spatial difference between corresponding points. A two-dimensional projection having a minimum score reflecting the smallest distance between the corresponding points may be identified.

Abstract: An alignment guide for acetabular implants is designed to fit a particular patient using 3D medical imagery, conforms to the patient and uses one or more guide holes to direct the insertion of a positioning pin to indicate the correct positioning of various surgical tools during a medical procedure.

Abstract: The present invention relates to a method for registering a first anatomical structure (1) which is articulately coupled to a second anatomical structure (2), the method being constituted to be executed by a computer and comprising the steps of: acquiring second structure correlation data describing the spatial position of at least one correlation feature (3) relative to the second anatomical structure (2); acquiring coupling data describing a positional fixation (6) of the first anatomical structure (1) relative to the second anatomical structure (2), which is set by the articulated coupling (4) between the first anatomical structure (1) and the second anatomical structure (2); determining, based on the second structure correlation data and the coupling data, first structure correlation data describing the spatial position of the at least one correlation feature (3) relative to the first anatomical structure (1). The present invention further relates to a corresponding computer program and system.

Abstract: A patient specific shoulder guide is provided that includes a hub and a plurality of peripheral members. Each of the peripheral members has a peripheral member height dimension between the patient specific contact surface and a side of the peripheral member opposite the patient specific contact surface. At least one of the peripheral members is a low profile peripheral member in which the peripheral height dimension is less than the peripheral height dimension of at least one other of the peripheral members or is less than the hub height.

Abstract: Disclosed herein are patient-specific cutting guides for guiding a surgical instrument for resecting a portion of a glenoid of a patient. The cutting guides include a base portion having a contact surface shaped to substantially match at least a portion of a cavity of the glenoid. The base portion has a guide hole extending therethrough in which the guide hole has an axis coaxial with an axis of rotation. The cutting guides include one or more stabilization members extending outwardly from the base portion and having a contact surface shaped to substantially match an outer surface of a portion of a scapula of the patient. The stabilization members are oriented to take into account the patient's anatomy in orienting and stabilizing the guide with respect to the glenoid. The guide hole of the base portion is for guiding the surgical instrument to create a guide hole in the glenoid.

Abstract: A medical imaging device takes one or more images of the local anatomy of a patient undergoing a surgical procedure. A surface model generator receives the one or more images and generates a 3-D surface model of the patient's anatomy. A fabrication device utilizes the 3-D surface model to fabricate a template custom designed to match the surface of the patient's anatomy. Attached to the template is a directional guide vane. The fabrication device is configured to create a template and directional guide vane such that, when the template is fitted to the patient's anatomy, the directional guide vane points along a predefined orientation relative to the patient's anatomy. A physician uses the directional guide vane as a visual guide or cue for installing an implantable prosthetic component during a surgical procedure.

Abstract: A device for a cup to be received in the cotyl of a hip. The device includes an insert, a gripping means for gripping the insert, a rod for imparting shock, and an impaction head having a surface in contact with a portion of the insert. The rod for imparting shock is designed to be held by a surgeon and is used for the application of an impaction shock to the insert when held by the gripping means opposite the cup to be introduced into the cotyl of a hip. The impaction head having a surface in contact with a portion of said insert and the rod are connected to one another so as form a head and rod assembly joined in rotation. The head and rod assembly is mounted pivotably at a pivot point in relation to the gripping means.

Abstract: An instrument used for the implantation of a glenoidal prosthetic component is disclosed. A relative position of a glenoidal prosthesis component and of a plate is adjustable around an implantation axis before fixing the assembly. The instrument comprises a tool for positioning the glenoidal prosthetic component and the plate relatively to each other angularly around the implantation axis. The instrument includes a tool that has a body, which, in use, extends transversely to the implantation axis and which is provided with localization elements for localizing an implantation angle centered on the implantation axis, so that the tool is able to intra-operatively protract the implantation angle with respect to the glenoid.

Abstract: The present disclosure provides systems and methods for repairing a defect on a portion of an articular surface of a human body, particularly of the glenoid. More particularly, the present disclosure provides systems and methods for repairing both a glenoid cavity and a glenoid rim of the glenoid using a single implant.

Abstract: A computer-assisted surgery (CAS) system comprises a cup implanting device including a shaft having a tooling end and a handle end with a handle for being manipulated, the shaft having a longitudinal axis, the tooling end adapted to support a cup for being received in an acetabulum of a patient, and a rotation indicator having a visual guide representative of a device plane, wherein the device plane is in a known position and orientation relative to a center of the cup on the tooling end.

Abstract: A stemless humeral component for replacing the humeral head of a patient's humerus includes a support flange having a number of cantilevered legs extending distally away from a bottom surface thereof. Instruments and methods for surgically installing the stemless humeral component are also disclosed.

Abstract: A depth measurement device includes a guide, a sliding part, a central column and a limit assembly, wherein the guide has a tubular structure. The sliding part is slidably connected to the guide, has a sliding direction parallel to an axial direction of the guide, and is used for connecting a tracer. The central column penetrates through the tubular structure, is able to move in the axial direction and to rotate around an axis, has one tail end for connecting with a cutting tool and another tail end for connecting with a power input. The limit assembly is fixed to the central column, is located on a side of the sliding part adjacent to the other tail end of the central column, and is able to drive the sliding part to synchronously move when moving along with the central column. A grinding device includes the depth measurement device.

Abstract: An orthopaedic impactor includes an elongate member having a first end and a second end; a striking surface connected to the first end; an actuator held by the elongate member; and an impaction assembly held by the elongate member at the second end. The impaction assembly includes a collar that has an opening formed through; an interfacing member that has a threaded end and is split into at least four sections held partially within the opening, the interfacing member having an expansion opening formed to the threaded end that defines a center; and a separator held in alignment with the expansion opening and connected to the actuator. The separator is configured to radially expand the at least four sections away from the center when advanced through the expansion opening by the actuator.

Abstract: A method and a device for use in total hip arthroplasty surgery is provided. The device includes a first guide member which includes a body having a top surface and a bottom surface, a plurality of first guide legs protruding from the body, and a plurality of protrusions extending from the body. The plurality of first guide legs include a contact area disposed on the open end of the first guide leg. The device also includes a third guide member which includes a tube, a plate configured to engage with the first guide member, and a plurality of holes disposed on the plate configured to receive the plurality of protrusions of the first guide member to couple the first guide member with the third guide member.

Abstract: A surgical instrument for implanting an acetabular prosthetic component is disclosed, wherein the surgical instrument includes a modular head. A plurality of locking pins extends from the modular head. A locking arm extends from the modular head and is movable between an open position and a closed position. A surgical handle extends from the modular head. The modular head is removably coupled to the surgical handle. The surgical handle engages a first locking pin to lock the modular head to the surgical handle. A linkage assembly engages a second locking pin to actuate the locking arm.

Abstract: A stock instrument includes at least one guide interacting feature. A lower instrument surface of the stock instrument is placed into contact with the patient tissue. A guide has a lower guide surface contoured to substantially mate with at least a portion of an upper instrument surface of the stock instrument. A predetermined instrument orientation upon the patient tissue is defined, which is preselected responsive to preoperative imaging of the patient tissue. The guide and instrument are mated in a predetermined relative guide/instrument orientation wherein at least one guide interacting feature of the instrument is placed into engagement with at least one instrument guiding feature of the guide. The guide is moved into a predetermined guide orientation with respect to the patient tissue and concurrently the instrument is moved into a predetermined instrument orientation with respect to the patient tissue.

Abstract: A method is used for aligning an acetabular cup insertion instrument by taking a single lateral view pre-operative digital x-ray of a standing patient's pelvis. The natural pelvic tilt angle is determined by locating an anterior pelvic plane (APP) which is defined by first, second and third points on the anterior of the pelvis and determining the angle between the APP and a coronal plane perpendicular to the surface on which the patient is standing. The patient is then placed on a surface of an operating room table in a supine position. A position tracking device is placed on the patient's pelvis to track movement. Thereafter an operating room navigation or orientation system is used to relocate the APP defined by the first, second and third points. A cup insertion instrument having a position tracking device thereon is oriented using the navigation or orientation system.

Abstract: A tool and method for locating a proper position for a portal incision for hip arthroplasty, the tool being a tubular body having a first portion defining a first axis, a second portion defining a second axis non-parallel to the first axis, the second portion having a directional tool and a lead coaxially aligned, wherein when the tubular body is placed adjacent to an acetabulum with the directional tool aimed at the acetabulum and perpendicular to a plane of the face of the acetabulum, the lead points to location on the skin that would be the proper location for the portal incision. The lead may have a blunt tip, a cutting instrument, or an opening through which a flexible tool can be inserted to forge a path towards the proper location for the portal incision.

Abstract: A surgical instrument comprises a first member including a drive engageable with a first mating surface of a bone fastener. A second member is rotatable relative to the first member and includes an element engageable with a second mating surface of the bone fastener. An actuator is connected with the second member and includes visual indicia of engagement of the element with the second mating surface. Systems, spinal implants and methods are disclosed.

Abstract: A tool and method for locating a proper position for a portal incision for hip arthroplasty, the tool being a tubular body having a first portion defining a first axis, a second portion defining a second axis non-parallel to the first axis, the second portion having a directional tool and a lead coaxially aligned, wherein when the tubular body is placed adjacent to an acetabulum with the directional tool aimed at the acetabulum and perpendicular to a plane of the face of the acetabulum, the lead points to location on the skin that would be the proper location for the portal incision. The lead may have a blunt tip, a cutting instrument, or an opening through which a flexible tool can be inserted to forge a path towards the proper location for the portal incision.

Abstract: An instrument (200) for positioning a hollow cup component (202) of an orthopedic joint prosthesis and assembly thereof are described. The instrument includes a support member (204) having a plurality of jaw members (208) unitarily formed around its periphery. Each of the jaw members has a cup engaging limb (210) extending in a first direction to be received in a recess on an external side wall of the cup component. Each jaw member is pivotable between an engaged position in which the cup engaging limbs are displaced inwardly and a disengaged position in which the cup engaging limbs are displaced outwardly allowing the cup component to be removed from between the jaw members.

Abstract: Orthopedic systems and methods are provided for use in preparing joints for implants. Specifically, hip preparation systems and methods are disclosed which can include a surgical orientation device. The hip preparation systems and methods can be used, for example, to orient the hip during the procedure, determine the orientation of an anatomical plane or planes, and orient a prosthetic component or components.

Abstract: A system for implanting an acetabular prosthesis includes a striker arrangement having a handle and a striker shaft with a distal end configured to engage an acetabular prosthesis. An elongate buttress shaft defines a longitudinal axis and is configured to receive the striker shaft therethrough; it is attachable to the striker shaft such that the distal end of the striker shaft extends beyond a distal face of the buttress shaft. The distal face has a larger diameter than a diameter of the distal end of the striker shaft and has a curved surface oriented transversely to the longitudinal axis.

Abstract: An orthopedic surgical instrument for positioning an acetabular prosthetic component in a patient's surgically-prepared acetabulum includes a surgical tool configured to be coupled to the acetabular prosthetic component, and a gravity-based position indicator removably coupled to the surgical tool. The position indicator includes a first marking indicating a first position of the acetabular prosthetic component, and a second marking indicating a second position.

Abstract: A medical imaging device takes one or more images of the local anatomy of a patient undergoing a surgical procedure. A surface model generator receives the one or more images and generates a 3-D surface model of the patient's anatomy. A fabrication device utilizes the 3-D surface model to fabricate a template custom designed to match the surface of the patient's anatomy. Attached to the template is a directional guide vane. The fabrication device is configured to create a template and directional guide vane such that, when the template is fitted to the patient's anatomy, the directional guide vane points along a predefined orientation relative to the patient's anatomy. A physician uses the directional guide vane as a visual guide or cue for installing an implantable prosthetic component during a surgical procedure.

Abstract: The present invention relates to an assembly having a acetabular cup has at least two snapping rims; the gripper is a subassembly separated from the handle, including a snapping teeth suitable for engaging with the snapping rims included by the acetabular cup. The gripper includes a movable pusher, capable, during its movement, of exerting thrust on the acetabular cup along the axis of revolution of said acetabular cup, so as to disengage the snapping rims comprised by the acetabular cup from their engagement with the snapping teeth included by the gripper; and the assembly includes an actuating device for actuating the movable pusher.

Abstract: Disclosed herein are systems and methods for performing total hip arthroplasty with patient-specific guides. Pre-operative images of a pelvic region of a patient are taken in order to predefine the structure of the guides and corresponding implants. From the obtained image data an insertional vector for implanting an acetabular implant or component into an acetabulum of the patient is determined, wherein the insertional vector is coaxial with a polar axis of the acetabular component. Also from the obtained image data, a superior surface of the guides and implants can be shaped to match the acetabulum of the patient. A nub portion extending outwardly from the superior surface of the guides and implants is shaped to substantially match the shape of a fovea of the acetabulum. A guide portion of the guides forming a slot has a longitudinal axis coaxial with the determined insertional vector of a corresponding acetabular component.

Abstract: A method for joint replacement is provided. A representation of a first bone is created, and a representation of a second bone is created. Bone preparation for implanting a first implant on the first bone is planned. The first bone to receive the first implant is prepared by manipulating a surgical tool to sculpt the first bone. Bone preparation for implanting a second implant on the second bone after preparing the first bone is planned. The second bone to receive the second implant is prepared by manipulating the surgical tool to sculpt the second bone.

Abstract: When an acetabular cup used in hip replacement surgery is to be affixed to the acetabulum using screws, the drill guide instruments of the invention are used to position a drill bit so that the screw holes drilled in the acetabulum are properly placed for optimum implantation of the acetabular cup. The drill guide is locked into the acetabular cup by spring loaded pins which position the guide over holes in the cup which accommodate the screws. The guide is used to position the drill bits and allow drilling. After drilling the guide is removed.

Abstract: A device to aid in performing a revision surgery on a joint can comprise: a body member having a bone facing bottom surface, an opposing top surface, a first end portion configured to be disposed on a bone, and a second end portion opposite the first end portion and configured to be disposed on the bone nearer to the joint relative to the first end portion; a connecting member attached to the body member and configured to extend beyond an end of the bone; and a guide member attached to the connecting member and including an opening configured to receive a cutting tool. The device can be sized and shaped based on a computed tomography scan of the bone, and the guide member can be configured so that when the device is installed on the bone, the longitudinal axis of the opening is aligned with a longitudinal direction of the bone.

Abstract: An orthopedic surgical instrument and method for positioning an acetabular prosthetic component in a patient's surgically-prepared acetabulum is disclosed. The orthopedic surgical instrument has a base configured to engage the patient's pelvis, a first linkage pivotally coupled to the base, a locking mechanism operable to lock the first linkage in position relative to the base, and a second linkage removably coupled to the first linkage. The second linkage has an alignment axis corresponding to a desired abduction angle and a desired anteversion angle of the acetabular axis of the acetabular prosthetic component.

Abstract: A surgical instrument for use in an orthopaedic arthroplasty procedure includes a shaft having a first end, a second end, and a longitudinal axis extending through a center of the shaft between the first and second ends. The surgical instrument further includes a spine extending outwardly from the first end of the shaft in a direction perpendicular to the longitudinal axis, wherein the spine has a longitudinal extent that is parallel to the longitudinal axis. When the surgical instrument is in contact with a tibial implant component, the spine is adapted to be positioned within an intercondylar notch of a femoral component.

Abstract: A pelvic digitizer device has a body defined by a shaft having a tooling end and a handle end with a handle for being manipulated. A visual guide is oriented in a reference plane of the digitizer device. A cup is connected to the tooling end and adapted to be received in an acetabulum of a patient. An inertial sensor unit is connected to the body, the inertial sensor unit having a preset orientation aligned with the reference plane.

Abstract: A stemless humeral component for replacing the humeral head of a patient's humerus includes a support flange having a number of cantilevered legs extending distally away from a bottom surface thereof. Instruments and methods for surgically installing the stemless humeral component are also disclosed.