Abstract: This disclosure includes surgical depth gauges and related methods. Some gauges have a probe assembly including a probe having proximal and distal ends, the distal end including one or more prongs, each having a distal-most tip, being movable between a retracted position and a deployed position in which the tip is farther from a longitudinal axis of the probe than when the prong is in the retracted position, and being biased toward the deployed position. Some probe assemblies include a cannula having proximal and distal ends, where the probe is disposable within the cannula such that moving the distal end of the probe toward and away from the distal end of the cannula causes each of the prongs to move between the retracted and deployed positions. Some depth gauges include a sleeve disposable over the probe assembly.

Abstract: The present invention relates to a multi-tool or multi-purpose device comprising a counter sink and a depth gauge. In one aspect, the invention provides a method of determining the necessary length of a screw to be implanted into bone. Also provided herein are sterile kits comprising single-use instrumentation for use in orthopedic procedures.

Abstract: Methods of harvesting cancellous bone and bone marrow include extracting loosened cancellous bone and bone marrow—including a liquid component thereof—to a collection container that has a first cup and a suction port to which a suction source is connected. After extraction, the suction source is disconnected and a lid of the collection container is removed and replaced with a lid having a plunger with a press head that is configured to filter the extracted liquid by depressing the plunger toward a bottom of the first cup. The filtered liquid is poured through a suction port into a second cup while depressing the plunger, thereby separating the liquid from a semi-solid mass of cancellous bone that remains. The bone is extracted through a cortical opening in the femur, tibia, or calcaneus, or from an intermedullary canal that is preferably formed by reaming of the tibia using an orthopedic reamer.

Abstract: A kinematic-axis locating device for knee arthroplasty includes two spoon-shaped arms and a linking piece. The two spoon-shaped arms are to be placed between a proximal tibia and a distal femur. Due to checking effects of ligaments on the proximal tibia and the distal femur, a medial condyle femur and a lateral condyle femur hold the two spoon-shaped arms on the tibial plateau using their respective curvatures. The linking piece provides a reference axis that is naturally defined by the two inserted and positioned spoon-shaped arms. The reference axis is roughly parallel to a kinematic axis upon which the medial condyle and the lateral condyle pivot against the tibial plateau. Articular surface resection can then be performed between the proximal tibia and the distal femur with reference to the reference axis.

Abstract: A surgical instrument system for treatment of an anatomical structure comprises an instrument and/or a patient specific instrument. The instrument and/or the patient specific instrument comprises an integrated measurement system for tracking the instrument and/or the patient specific instrument relative to the anatomical structure. The integrated measurement system comprises a tracking system, which comprises a shadow imaging tracking system comprising an optical source, a shadow-generating device and a patient specific instrument sensor. An initial position of the instrument or the patient specific instrument is registerable by the patient specific instrument sensor. The shadow-generating device is arranged between the optical source and the imaging device for generating a shadow. The shadow imaging tracking system is configured to compute the elevation of the source from the pattern the shadow casts on the surface of the imaging device.

Abstract: A measuring adapter (1) for a measuring instrument for use in connection with hip prosthesis surgery is provided. The measuring adapter (1) comprises a measuring head (2) and a connector (3); the measuring head (2) comprises a front end (2a), a rear end (2b) and an upper surface (4a). The upper surface (4a) is convex. The measuring head (2), along an axial direction of the measuring adapter (1), further comprises a central through-going bore (5) adapted to receive an actuating rod (8). The measuring head (2) is adapted to expand from a relaxed state to an expanded state when the actuating rod (8) is axially displaced in the central through-going bore (5); and the measuring head (2) is divided into at least two separate sections (6). The connector (3) is hollow and slotted at one end in axial direction of the measuring head (2) into a number of legs (7), the number of legs (7) corresponding to the number of the at least two separate sections (6) of the measuring head (2).

Abstract: A system for use during an orthopaedic surgical procedure includes a femoral broach, an acetabular cup component, and an acetabular alignment guide. The femoral broach includes a mounting post positioned at a superior end of an elongated body. The cup component includes a distal rim and a curved surface extending inwardly from the rim to define a cavity. The alignment guide includes a distal end configured to be coupled to the mounting post and a proximal end configured to be coupled to the distal rim. When coupled to the femoral broach, the guide instrument is sized to orient the acetabular cup component relative to the femoral broach. The acetabular cup component may be a prosthetic cup component or a trial instrument corresponding to the prosthetic cup component.

Abstract: The embryo transfer cannula stabilizer is a device attached to a vaginal speculum, which allows the sliding, placement, and secure fixing of a cannula to perform an embryo transfer. The embryo transfer cannula stabilizer prevents fine movement of the user's hand to reduce tremor at the intracervical level and avoid injury to the cervical canal, rupture of blood vessels, and the production of detritus.

Abstract: Disclosed herein are apparatuses and methods for intraoperative on-demand implant customization in a surgical setting. An apparatus may include a storage portion, an implant customization portion and an interface. The storage portion may house implant blanks and implant accessories. The implant customization portion may customize the implant blanks. The interface may be configured to receive implant customization information and utilize the same to intraoperatively manipulate the implant blank to a patient-specific implant within a sterile environment. A method to customize an implant in a surgical care environment may include the steps of obtaining information related to the implant location, selecting an implant blank based on the information, and customizing the implant blank in a surgical care setting with a customization apparatus.

Abstract: Methods of harvesting cancellous bone and bone marrow include extracting loosened cancellous bone and bone marrow—including a liquid component thereof—to a collection container that has a first cup and a suction port to which a suction source is connected. After extraction, the suction source is disconnected and a lid of the collection container is removed and replaced with a lid having a plunger with a press head that is configured to filter the extracted liquid by depressing the plunger toward a bottom of the first cup. The filtered liquid is poured through a suction port into a second cup while depressing the plunger, thereby separating the liquid from a semi-solid mass of cancellous bone that remains. The bone is extracted through a cortical opening in the femur, tibia, or calcaneus, or from an intermedullary canal that is preferably formed by reaming of the tibia using an orthopedic reamer.

Abstract: An exemplary method, and corresponding instrumentation, of balancing the ligaments of a knee during flexion is disclosed. In one embodiment, the method includes forming initial resection cuts in a patient' femur and tibia, and subsequently placing the knee in flexion to form a flexion space between the posterior femoral condyles and the resected tibial surface. The method may further include sequentially inserting one or more flexion spacers into the flexion space, and selecting the flexion spacer that provides the ligaments with equal tension. The flexion spacers may include a medial platform and a lateral platform wherein, for at least one of the flexion spacers, the lateral platform has a greater thickness than the medial platform. The method may further include engaging an alignment sizing tool with the selected flexion spacer, forming a pair of pin holes in the femur, and mounting a cutting block to the femur using the pin holes.

Abstract: A direction checking pin and a guide tap drill kit for insertion of a fixture for an implant includes an endosseous fixing guide, a direction checking pin body and a guide tap drill. The endosseous fixing guide and the direction checking pin body are combined and then inserted into an already-formed insertion hole and only the direction checking pin body is removed after checking a direction of the insertion hole, and the guide tap drill is inserted to the endosseous fixing guide remaining in the insertion hole and then rotated so as to enter into the insertion hole such that a screw thread is formed in accordance with the direction of the insertion hole at an inner wall of the insertion hole by the tap drill.

Abstract: An assembly for attachment to a first implant component has a size and shape of a second implant component to be implanted together with the first implant component. The assembly includes a first body and a second body removably connected to the first body. In a temporary configuration, the first and second bodies are prevented from separating while the first and second bodies permit relative movement therebetween. A modular kit includes a plurality of the first bodies each having a different size or shape, and a plurality of the second bodies each having a different size or shape. A method of assembling the assembly includes removably connecting the first body to the second body, such that the first and second bodies are prevented from separating while permitting relative movement therebetween, and positioning the assembly on the first implant component.

Abstract: A minimally invasive surgical procedure for replacing a hip joint is provided. A main incision is initiated at a point being a projection of a tip of a greater trochanter and extends proximally about a distance in the range of from 1 cm to 8 cm in line with the femoral axis. An inline capsulotomy is performed, while keeping muscles and posterior capsule intact, to expose the hip joint capsule for accessing the hip joint. The femoral canal is prepared for receipt of a femoral implant. The femoral head is resected and removed out of the acetabulum. A step of acetabular preparation is performed using a retractor comprising two tip rails, each tip rail having a plurality of tines. Related tools, devices, systems and methods are also provided.

Abstract: Disclosed herein is an arthroplasty jig for use in an arthroplasty procedure on a bone of a patient that forms a ball and socket joint. The arthroplasty jig may include a customized mating region and a resection guide. The customized mating region and the resection guide are referenced to each other such that, when the customized mating region matingly engages a surface area of a proximal femur, the resection guide will be aligned to guide a resectioning of the proximal femur along a preoperatively planned resection plane.

Abstract: Systems, devices and methods for guiding placement, orientation, and fixation of an orthopedic implant. Examples include a surgical guide having a first surface structured to fit within a prosthetic cup, at least one guide hole through the first surface, and an alignment structure having a contour formed from data indicative of the patient anatomy. The contour of the alignment surface is complementary to a portion of the patient anatomy in a unique orientation that aligns the guide hole with tissue suitable for receiving a fastener. The alignment structure preferably includes an arm with a first end coupled to a rim of the guide and a second end coupled to the contour. In certain implementations, the guide includes a plurality of alignment structures. Further disclosed are methods of making and using a surgical guide for aligning an orthopedic implant.

Abstract: A modular fluoro-navigation instrument including a base made of a substantially radiotransparent material. The base is intended to be rigidly secured to a patient's bone and a tracker rigidly attachable to the base. The instrument has a registration phantom separate from the tracker which includes a plurality of radiopaque fiducials. The base and the registration phantom includes respective attachment members for reproducibly attaching the registration phantom to the base.

Abstract: Knee arthroplasty instrument systems directly reference and align with the anterior distal femoral cortex and the mechanical axis of the leg. The anterior femoral resection is aligned in the same plane as the anterior distal femoral cortex. The center of the femoral head, the medial/lateral center of the distal femur, the medial/lateral center of the proximal tibia, and the second toe, medial/lateral center of the ankle, or anterior tibial spine are all aligned to the mechanical axis of the leg. Methods of using the instrument systems are disclosed.

Abstract: Bone harvesting tools and methods of use thereof are disclosed. In an embodiment, the tool comprises a chamber having a first aperture, a second aperture, an internal cavity, and a suction source fluidly connected with the chamber. The suction source is effective to generate negative pressure within the internal cavity of the chamber. The tool also has a reamer having a reaming portion, the reamer being sized to extend through the first and second apertures of the chamber, wherein the reamer is movable relative to the chamber. Additionally, the tool includes a storage container fluidly connected to the internal cavity of the chamber and effective to receive bone and/or cellular material extracted from the patient, the bone and/or cellular material being extracted during reaming a bone of the patient with the reamer.

Abstract: A single-use handle is configured to attach to a working shaft that can support a sounder for measuring the medullary canal of a proximal radius, and a planarizer that is configured to planarize a proximal edge of the proximal radius after the proximal radius has been resected. The handle can further include a plurality of sizing cavities that are configured to receive the resected bone so as to determine the size of the resected bone. The handle can further include an ejector that is configured to decouple the planarizer from the working shaft.

Abstract: Patient-adapted articular repair systems, including implants, instruments, and surgical plans, and methods of making and using such systems, are disclosed herein. In particular, various embodiments include methods of selecting and/or designing patient-adapted surgical repair systems using parameterized models and/or multibody simulations.

Abstract: Provided is a medical probe comprising a handle part to be held in hand, a position transmission part to be coupled to the hand part and to reflect or transmit a position signal to an optical tracking system (OTS), a main body to be coupled to one side of the handle part and to be positioned at an affected area of a patient, and a hook part to be coupled to the other side of the main body and to touch the affected area, wherein the hook part is coupled to the main body so as to have one angle of an acute angle, a right angle and an obtuse angle with respect to the main body.

Abstract: A surgical apparatus configured to be placed in the musculoskeletal system to precisely separate a first bone from a second bone. The surgical apparatus has one or more sensors to measure one or more parameters and supports one or more bone cuts for installing a prosthetic component. The surgical apparatus has at least one distraction mechanism configured to increase or decrease a height between a first support structure and a second support structure. A tilt mechanism comprises the at least one distraction mechanism. The tilt mechanism couples through a first pivot point and a second pivot point and adjusts a tilt of the second support structure relative to the first support structure. In one embodiment, loading applied to the second support structure is distributed between the first pivot point and the second pivot point during operation of the surgical apparatus.

Abstract: A trial system for determining a suitable proximal body implant for hip replacement surgery comprises a separator instrument, a trial body attachable to a distal stem, and an insert. The insert is positioned within the trial body to receive the separator instrument. As the separator instrument is rotated about its axis, a ramp element of the insert guides a pin of the separator instrument, so as to separate the trial body from the distal stem. Additional apparatus, methods, and systems are disclosed.

Abstract: A smart surgical instrument for artificial joint replacement includes a femur resection device, a tibia resection device, and a detector having a shape corresponding to the resected surfaces of a femur and a tibia. The femur resection device includes a laser device such that the femur resection device can be aligned for resection of the femur without drilling an intramedullary hole, thereby preventing complications attributable to the intramedullary hole. The tibia resection device includes a laser device, thereby enabling an easy and fast surgical operation without using an extramedullary aligner used for alignment of a tibia during resection of the tibia. The detector includes a rotation detection means and a pressure detection means and is inserted between trials to allow numerical verification for medial and lateral balance of forces and a rotation state of the trials. The surgical instrument enables a precise, accurate, easy, and fast surgical operation.

Abstract: The invention relates to a device for minimally invasive attachment of a tracker (20) and/or a registration phantom (30) to a patient's bone, comprising a base (10) made of a substantially radiotransparent material, characterized in that the base (10) comprises: a support surface (11) intended to face the bone, a plurality of non-parallel through holes (14) for passing a respective percutaneous pin (2) through the base (10); at least one slot (15) extending from an edge of the base (10) in a direction transversal to the through holes (14), said slot (15) passing throughout the base (10) until the support surface (11) and being intended to engage a percutaneous pin (2) implanted into the patient's bone so as to allow the base (10) to slide along said pin (2); and a reproducible fixation system for attaching the tracker (20) and/or the registration phantom (30) to the base.

Abstract: A single-use handle is disclosed for releasably engaging an orthopedic device. The handle includes an elongate body that has a first portion that, in turn, defines a connection end adapted for connection to an upper end portion of a broach. The handle includes a second end portion adapted to be griped by a user. The handle further includes a cylindrical bore at the connection end. The bore is configured to receive a corresponding male portion of a surgical instrument. The handle further includes a button that is adapted to releasably connect the instrument in the bore. The handle further includes a plurality of sizing cavities that have a predetermined size and shape that corresponds to the size and shape of an orthopedic implant. The handle is of a biocompatible, disposable material.

Abstract: A patient-customized surgical instrument used to form a surgical site in a tibia for implantation of an implant into the tibia, and a surgical module using the same. A body part is coupled to the tibia to surround a portion of the tibia. A cutting-member insertion window is formed through a side of the body part to receive a cutting member that is inserted to form a cutting plane of the tibia. A position setting hole is formed through the upper side of the body part to receive and guide a post recess forming member that is used to form a post recess in the tibia. A post of the tibia element is received in the post recess. A surgical site can be accurately and easily formed in a damaged tibia.

Abstract: A bone fracture fixation system including reference pins inserted into bone fragments of a patient in a first configuration and an image capture device configured to capture an image of the reference pins, and the bone fragments. The system includes a processor configured to receive and pre-process the captured image data. The processor pre-processes the image data by virtually re-positioning the reference pins in the first configuration into a second configuration, wherein the re-positioning virtually re-positions the bone fragments into normal alignment; and virtually generating a support device. The system includes a point-of-care production apparatus that produces a three-dimensional model of the virtually generated support device in a form that can be applied to the patient.

Abstract: In one embodiment, an intervertebral trial includes a front surface, a top surface, a bottom surface, a first side surface and a second side surface that collectively define an internal space. The internal space includes at least one marker structure attached to at least one of the top surface, the bottom surface, the first side surface and the second side surface. The at least one marker structure indicates a dimension of the intervertebral trial. Additionally, the at least one marker structure is spatially representative of the dimension when measured relative to one of the front surface, the top surface, the bottom surface, the first side surface or the second side surface.

Abstract: A method for assisting in positioning the acetabular cup comprises orienting a cup positioning instrument with a cup thereon in an initial reference orientation relative to an acetabulum of a pelvis with the cup forming a joint with the acetabulum, the cup positioning instrument comprising an inertial sensor unit with pre-planned orientation data for a desired cup orientation based on at least one landmark of the pelvis, The cup positioning instrument is rotated to a desired abduction angle as guided by an interface of the cup positioning instrument, based on movements relative to at least one landmark. The cup positioning instrument is rotated to a desired anteversion angle as guided by the interface of the cup positioning instrument, based on movements relative to the at least one landmark. Upon reaching the desired cup orientation as indicated by the interface, the cup is impacted into the acetabulum.

Abstract: Systems and methods for optimizing parameters of an orthopaedic procedure for a particular patient, including parameters relating to the anatomic and biomechanic fit of an implant or implant system implanted into the patient's joint. These systems and methods may utilize patient-specific information gathered pre-operatively in conjunction with optimization algorithms to determine an optimal implant design and an optimal position and orientation for implantation of the implant into the particular patient's joint.

Abstract: A method of implanting a bone anchor in a vertebra comprises engaging a tip of a flexible drill bit with boney structure of the vertebra, rotating the flexible drill bit at a slow speed, pushing the drill bit into exterior cortical bone of the boney structure of the vertebra, guiding the flexible drill bit into cancellous bone of the vertebra, receiving a tactile output generated by the flexible drill bit indicating resistance of interior cortical bone of the boney structure against the flexible drill bit, and reorienting a trajectory of the flexible drill bit toward the cancellous bone of the vertebra in reaction to the tactile output.

Abstract: Arthroplasty jigs and related methods are disclosed. Some of the arthroplasty jigs may comprise a jig body that is configured to align with a surface of a bone, and a positioning component. Certain of the methods may comprise providing such an arthroplasty jig, and aligning the jig body with a surface of a bone so that the positioning component provides at least one of a visible, audible, or tactile indication that such alignment has been achieved. Some of the arthroplasty jigs may comprise a jig body that is configured to align with a surface of a bone, and that is marked with identifying information. Certain of the methods may comprise providing an arthroplasty jig comprising a jig body that is configured to align with a surface of a bone, or providing an arthroplasty jig blank, and marking the arthroplasty jig or the arthroplasty jig blank with identifying information.

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: The invention is a super elastic bone plate and inserter. The bone plate has a plate section with openings for screws at fixed or variable angles, an optional compression slot, and a pronged section (i.e. the claw foot), which is generally transverse to the long axis of the plate for insertion, and after deployment returns to an angle of less than 90° to impart compression at a bone/bone interface, e.g. to cause fusion between bone segments. The inserter, which has a first leg with a frictional fit holding block for the plate and a second leg with a holding and activation mechanism for the super elastic pronged section. The invention also relates to a method of bone fusion using the plate system.

Abstract: A dynamic foot plate assembly structured for therapeutic use adjacent the ankle area of the body comprising a base element, at least one side element extending along the ankle area, and at least one joint movably and adjustably connecting the base element to the side element for variable displacement of the base element and side element into different operative orientations. The dynamic foot plate assembly may also comprise a plurality of strut members disposed in an interconnecting relationship between either a support member and a side element, or the support member and the base element. The strut members, if present, facilitate the variable relative displacement of the base element, side element and support element into different operative orientations.

Abstract: This application describes surgical instruments and implants for building a posterior fixation construct across one or more segments of the spinal column during a medialized posterior lumbar interbody fusion (PLIF) procedure.

Abstract: A method and system for determining the orientation of a surgical tool with respect to a bone of a patient discloses initializing a first active sensor and a second active sensor relative to each other with the first active sensor and second active sensor having a predetermined (relative) orientation. The first active sensor is configured to sense a change in its orientation, provide first information relating to the change and be attached to a bone in a relationship to a reference plane therefor, for use during an operation. The second active sensor is configured to sense a change in its orientation, provide second information relating to the change and be attached to a surgical tool. The relative orientation of the active sensors is useful to determine the relative orientation of the tool and the reference frame of the bone.

Abstract: A tissue harvesting device (1), comprising a rotary cutting tool (10) adapted to cut soft tissue and a collection container (20) including a central bore (21) extending in a longitudinal direction and with a distal opening (22), wherein the cutting tool is arranged in the central bore of the collection container and adapted to pass through the distal opening and draw harvested soft tissue fragments into the collection container, and a housing (30) accommodating the cutting tool and the collection container, wherein the collection container is axially movable with respect to the housing.

Abstract: Alignment guide systems, fixation guide devices, and methods for positioning and inserting an intramedullary nail are disclosed. The alignment guide system includes a targeting guide with a first end and a second end, an alignment wire rotatably engaging a second end of the targeting guide, and a guide sleeve insert engaging an opening in the first end of the targeting guide. The fixation guide device including a frame including a first end and a second end, a compression device slidingly coupled to the first end of the frame, and the intramedullary nail secured to a nail attachment apparatus of the frame. A method of inserting an intramedullary nail into two bones for fixation of the two bones is also disclosed.

Abstract: An apparatus for early detection of sepsis in a host is disclosed. The apparatus includes a first sensor to directly measure a glucose level, a second sensor to directly measure a lactate level and a third sensor to directly measure a tissue oxygen level. The first sensor, the second sensor, and the third sensor all being inserted at a single point of entry in a subcutaneous space of the host such that a predetermined correlation between the glucose level, lactate level, and tissue oxygen level signals conditions related to sepsis.

Abstract: Devices and methods for aligning the components of polyaxial screws are described herein. In one embodiment, an alignment instrument includes an elongate frame having a longitudinal axis and a plurality of connection caps slidably disposed along the elongate frame. Each connection cap can removably couple to a polyaxial screw extension tube and selectively lock relative to the elongate frame such that a distance between the plurality of connection caps and an angular orientation of each connection cap relative to the elongate frame is maintained. The instrument can also include a transverse angle indicator to indicate an angular orientation of the elongate frame in a plane transverse to the longitudinal axis of the elongate frame. The device can, for example, capture the orientation of a plurality of polyaxial screws during spinal surgery such that the screws can be returned to the same orientation after manipulation to correct a spinal deformity, etc.

Abstract: A surgical instrument (1) for knee balancing, comprising: a static tibial element (2) including a base and a tibial paddle (21); a femoral element (3) including a femoral paddle (31) and a femoral arm; a movable element (4) including a guide (40) movable in translation on the base according to a longitudinal axis (AL), wherein the femoral element is pivotally mounted on said movable element according to an anterior-posterior axis (AP), and a transverse arm; a system (5) for setting the mobility of said guide in order to provide a distraction function; a reversible blocking system coupled between the transverse arm and the femoral arm to pivotally immobilize the femoral element with respect to the movable element in a reversible manner in order to set the pivot angle of the femoral paddle with respect to the tibial paddle at different angle values.

Abstract: A guide and a method for locating a cutting block on a resected distal surface of a patient's femur in a knee replacement procedure. The guide includes a first body part for positioning over the resected distal surface. The first body part includes a pair of posteriorly extending feet for engaging with the posterior condyles of the femur. The guide also includes a second body part for positioning over the resected distal surface. The second body part includes at least one pair of locator holes for locating fastener pins by which the cutting block can be fastened to the resected distal face. The first body part is removably attachable to the second body part in a plurality of discrete positions for selectively angling the second body part with respect to an anatomical feature of the patient when the feet of the first body part are engaged with the posterior condyles.

Abstract: An orthopaedic surgical instrument for use in resecting a patient's bone is disclosed. In some embodiments, the instrument may be for single patient use and may be disposed of at the end of each surgical procedure.

Abstract: Laparoscopic instruments and methods of use are disclosed for measuring the distance between first and second portions of a target within a patient. The device includes a shaft, a ball, and a measuring member. The shaft has a distal end configured to extend into the patient. The ball is flexibly connected to the measuring member and configured for relative movement towards and away from the distal end of the shaft. The measuring member is slidable with respect to the shaft in response to relative movement between the ball and the distal end of the shaft and includes indicia thereon, whereupon a portion of the measuring member extends out of shaft so that the indicia provides an indication of the distance between the first and second portions of the target. One embodiment of the device is spring biased to automatically retract the ball after a measurement.

Abstract: An orthopedic measurement system is disclosed to measure leg alignment. The measurement system includes a tri-axial gyroscope configured to measure movement of a leg. The gyroscope is coupled to a tibia of the leg. For example, the gyroscope can be placed in an insert or tibial prosthetic component that couples to the tibia. The gyroscope is used to measure alignment relative to the mechanical axis of the leg. The leg alignment measurement is performed by putting the leg through a first leg movement and a second leg movement. The gyroscope outputs angular velocities on the axes the sensor is rotated about. The gyroscope is coupled to a computer that calculates the alignment of the leg relative to the mechanical axis from the gyroscope measurement data.

Abstract: Holographic image-guidance can be used to track an interventional device during an endovascular percutaneous procedure. The holographic image guidance can be provided by a head-mounted device by transforming tracking data and vasculature image data to a common coordinate system and creating a holographic display relative to a patient's vasculature to track the interventional device during the endovascular percutaneous procedure. The holographic display can also include graphics to provide guidance for the physical interventional device as it travels through the patient's anatomy (e.g., the vasculature).

Abstract: Devices and methods for use in a hip replacement surgical procedure. One aspect includes methods and devices for reaming selective regions of the femoral canal. This may include reaming distal and proximal sections of the femoral canal prior to reaming a middle region of the canal. Another aspect includes a dummy implant and methods of use. The dummy implant is inserted into the femoral canal and may be used for one or more of retraction of the femur, gauging a space with the acetabulum, and further revising the femoral cut. The aspects may be used together in a single surgical procedure or separately in different surgical procedures.