Abstract: A goniometric feedback device and an associated method for monitoring the relative angular position of two human body portions hinged at a common joint utilize a brace mechanism, transducer circuits, an array of selection light-emitting diodes (LEDs), an array of movement response LEDs, indicia associating with each LED array with a series of angular values, preselection circuits and sensing circuits. The brace mechanism includes two brace sections securable to the two body portions, and the transducer circuits provide an output electrical signal which varies in strength in response to a change in the relative angular position between the two brace sections so that the output signal strength corresponds to the relative angular position between the two brace sections.