Surgical, medical and biomechanical apparatus and instruments; apparatus for medical use, in particular physiological measurement apparatus especially for motion allowing assistance in medical diagnosis, prevention of health risks and physical rehabilitation; goniometric measurement apparatus in particular for a global view of articular extensions; electronic motion measurement devices for physical motricity work appliances; electronic motion measurement devices for motricity rehabilitation apparatus; electronic motion measurement patches adapted in particular for the analysis of motion, the measurement of day or night activity and the detection of falls