Examples of a device for guiding and detecting a motion of a target joints and a motion assistance system such motion guiding devices are described. The motion guiding and detecting device comprises a motion generator and a motion transfer and target interfacing unit to transfer the motion generated by the motion generator to the target joint. The system further comprises a motion detection and feedback unit that interfaces with the target, and a controller that interfaces with both the feedback unit and the motion generator to control and coordinate the motion of the motion generator and the target joint.

A system for displaying and collecting biomechanical measurements is provided. The system comprises: an electronic caliper including a bar, two arms slidably mounted on the bar and extending normal therefrom, a display module, and an electronic system housed in the display module and comprising a light emitting diode string of lights, a nine-axis sensor, firmware, a wireless radio, and a power source connector for electronic communication with a power source; and a remote computing device, the wireless radio in communication with the remote computing device. The electronic caliper and method of use thereof is also provided.

The present disclosure includes systems and methods for deriving certain characteristics of the patient's body related to motion from captured motion data. The characteristics may be used to compare the characteristics of the supposed injury to the characteristics of a normally functioning body part as well as the functions of an injured body part. The present disclosure provides a reliable and reproducible way to determine whether a supposed injury is a feigned or exaggerated injury or an actual injury.

Methods and apparatus for performing joint laxity measurement are disclosed. A retractor includes a plurality of spacers, such as plates, that are capable of being moved from a central portion of the retractor by a carriage mechanism. In some cases, the carriage mechanism may press against ramps connected to internal sides of the plates, thereby causing the plates to be displaced outwardly. In other cases, the carriage mechanism may include blades that rotate and press against the internal sides of the plates, thereby causing the plates to be displaced outwardly. The retractor is mounted on a surgical device configured to actuate the carriage mechanism. When the retractor is placed in a joint and the carriage mechanism is actuated, a measurement of the joint laxity may be determined based upon characteristics of the retractor and/or the surgical device.

A data processing method performed by a computer for judging implant orientation data representing an orientation of a first implant part relative to a first bone, the first implant part being part of an implant pair which further comprises a second implant part for a second bone, the implant pair being envisaged to be implanted in a patient.

Implant orientation data representing a range of functional orientations of a first implant part relative to a first bone is determined. The first implant part is part of an implant pair to be implanted in an associated patient. The implant pair includes the first implant part and a second implant part. Second implant orientation data representing an orientation of the second implant part relative to a second bone is acquired. Implant shape data representing shapes of the first and the second implant parts is acquired. Activity data representing a desired activity of the associated patient is acquired. The desired activity has an associated original range of motion between the first bone and the second bone. The implant orientation data is determined based on the second implant orientation data, the implant shape data, and the activity data.

A method includes a obtaining an image of a center of a pelvis of a patient captured by an imaging device and analyzing the image of the pelvis center to determine whether or not the pelvis center is aligned with the imaging device using a computing device. When the pelvis center is not aligned with the imaging device, the method includes determining one or more alignment instructions for aligning the pelvis center with the imaging device by the computing device and transmitting the analyzed image of the pelvis center and the one or more pelvis alignment instructions to a user device in communication with the computing device. The user device executes a graphical user interface for displaying the analyzed image and one or more pelvis alignment instructions.

A method for measuring a profile of a manikin. The method comprises the steps of: suspending the manikin by a suspension frame, connecting one or more measuring devices to the manikin at one or more measuring points, raising a support surface to meet the manikin, supporting the manikin by the support surface, and measuring by the one or more measuring devices, differences in angles of the manikin profile between the suspended configuration of the manikin and the supported configuration of the manikin. The manikin comprises one or more articulating joints defining a manikin profile. The manikin also defines a suspended configuration when suspended by the suspension frame, and a supported configuration when supported by the support surface. The method provides a process to replicate and measure human physiology when engaged with a surface.

Systems and methods for anatomical alignment are disclosed herein. In some embodiments, the systems and methods can provide accurate and continuous intraoperative validation of anatomical alignment, e.g., of the spine, hips, pelvis, and/or shoulders. An exemplary system can include a sensor and marker arrangement for measuring coronal imbalance. Another exemplary system can include a sensor and marker arrangement for shoulder or pelvic leveling. Yet another exemplary system can include a mechanical frame for establishing a simulated ground plane and projecting a plumb line from the simulated ground plane.

A medical device used for measuring loads at joints. The device may have a stem coupled to bone, a neck, and a ball joint coupled to the neck. The ball joint may be a femoral trial head. The ball joint may be an upper and lower housing coupled together. The ball joint houses a central column that may be a part of the lower housing, a circuit board on the column, and sensors. The sensors may be radially arrange around the circuit board at equal distances from the circuit board and equal angular distances from each other. The sensors may be impacted by features on the inner surface of the upper housing so that they may together measure the force on the upper housing. The force magnitude and location at the joint may be determined from the forces measured at the sensors.