SYSTEM AND METHOD FOR MOTION BASED ALIGNMENT OF BODY PARTS

The embodiments described herein relate to systems, methods, and devices for high precision inertial measurement sensing of functional movement and range of motion analysis with close to zero drifts in sensor orientation readings. The system calibrates IMU raw data samples after warm up, and uses a fast convergent fusion algorithm to calculate high accuracy and almost drift free orientation information. In some examples, the systems, methods, and devices are used in computer-guided or robotic surgery, to aid in evaluation before, during, and after a surgical operation.