Patient Activity Measurement in Active Elbow Orthosis

The paper is focused on problem of determining the activity of patient’s forearm during the process of rehabilitation of elbow joint using the active device - motorized orthosis, equipped with the sensor to measure such activity. The measurement is the key feature for the active device to fulfill its purpose: move the actuated part of orthosis based on patient’s activity thus improving the rehabilitation process. Paper gives details on used hardware, preliminary measurements and introduces the method of extracting the patient’s zero activity as it is the zero activity the subsequent control system must be related to.