Subject specific calibration movements to calculate hip and knee kinematics using inertial measurement units

Inertial measurement units (IMU) are used to calculate joint kinematics. This study demonstrates that subject-specific calibration movements based on a patient’s function and ability including limited range of motion and speed are sufficient for defining body segment coordinate systems at the pelvis, thigh and shank. IMUs can be used to calculate hip and knee kinematics in unimpaired and impaired populations.