Systems and method for monitoring gait dynamics are disclosed. The performanceof an orthotic or prosthetic device (30) or other device associated with alimb may be measured based on the resistance of a bending sensor (38). Datafrom the sensors is gathered or processed, particularly for purposes ofalignment, safety, failure, usage, selection, and artificial proprioception.Information relating to the device may be outputted visually or auditorily toan individual.