A method for diagnosing a joint condition includes in one embodiment: creating a 3d model of the patient specific bone; registering the patient's bone with the bone model; tracking the motion of the patient specific bone through a range of motion; selecting a database including empirical mathematical descriptions of the motion of a plurality actual bones through ranges of motion; and comparing the motion of the patient specific bone to the database.

Tibial inserts and tibial extensions coupled to a sensor, and systems including such devices, can generate data and analysis based on that data, which may be used to identify and/or address problems associated with the implanted medical device, including incorrect placement of the device, unanticipated degradation of the device, and undesired movement of the device. Also provided are tibial inserts and tibial extensions coupled to a sensor, and devices and methods to address problems that have been identified with an implanted medical device.

Disclosed herein are systems and methods for providing peripheral services for an implant with sensors. A method according to the present disclosure may creating a patient account on a patient monitoring platform, determining sensor information to be measured from one or more sensors disposed on an implant coupled to a patient using the patient account, determining a duration during which sensor information is collected and transferred from the one or more sensors to the patient monitoring platform, analyzing sensor information received from the one or more sensors on the patient account via an external device, and communicating corrective steps from the external device to the patient or the implant via the patient account.

Disclosed herein are joint implants and methods for tracking joint implant performance. A joint implant according to the present disclosure can include a first implant coupled to a first bone of a joint; a second implant coupled to a second bone of the joint; an insert coupled to the first and second implants; an acoustic exciter configured to emit a vibration signal; a sensor to measure the vibration signal of the first implant, the second implant, and the insert; and a processor operatively coupled to the sensor, the processor configured to output a vibration signature to an external source.

A bone density estimating method, comprising: acquiring, by an MR scanning device, a magnetic resonance, MR, sequence of a body portion, wherein the MR sequence comprises quantitative information of the body portion; generating, by a processing circuit, an MR image of the body portion based on the MR sequence, wherein each voxel of the MR image represents a volume of the body portion; identifying, by the processing circuit, a part of the MR image representing a bone portion of the body portion; for a voxel of the identified part of the MR image, estimating a bone density of a volume of the bone portion represented by the voxel, based on a quantitative value of the voxel. The quantitative information of the body portion comprises a proton density.

Systems and methods for estimating anatomic alignment between two or more bones are described herein. An example method can include registering an anatomic reference frame. Additionally, the method can include establishing a respective rotational relationship between each of one or more bones and an orientation sensor attached to each of the one or more bones. The method can also include receiving, from each of the orientation sensors, orientation information, and then calculating an orientation of a bone relative to the anatomic reference frame. The method can further include calculating, using the respective orientations of the bones relative to the anatomic reference frame, an anatomic alignment parameter between first and second bones.

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).

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.

A method of navigating a cutting instrument, via a computer system, the method comprising: (a) mounting a patient-specific anatomical mapper (PAM) to a human in a single known location and orientation, where the PAM includes a surface precisely and correctly mating with a human surface correctly in only a single location and orientation; (b) mounting a reference inertial measurement unit (IMU) to the human; (c) operatively coupling a guide to the PAM, where the guide includes an instrument inertial measurement unit (IMU) and at least one of a cutting slot and a pin orifice; (d) outputting data from the reference IMU and the instrument IMU indicative of changes in position and orientation of the guide with respect to the human; (e) repositioning the guide with respect to the human to a position and an orientation consistent with a plan for carrying out at least one of a cut and pin placement; and, (f) visually displaying feedback concerning the position and orientation of the guide with respect to the human using data output from the reference IMU and the instrument IMU, which data is processed by a computer program and the computer program directs the visually displayed feedback.

Contemplated systems for monitoring and analysis of human motion synthesis are disclosed herein that include: at least one garment configured to be worn by a user, at least one inertial sensor, wherein the at least one inertial sensor is integrated with or into the at least one garment, an information system, wherein the information system communicates with the at least one inertial sensor to produce a set of data, at least one musculorientation metric generated by the information system, and at least one performance report that is produced from the analysis of the at least one musculorientation metric.