Forearm Goniometer

Part of the goniometer series developed by Ockendon.net, forearm goniometer expands upon the functionality of simple goniometer to use the iPhone’s internal accelerometer for measuring forearm pronation/supination.  Although no instructions are provided, it seems that the user should be holding the iPhone in their right or left hand. When ready, the user selects the proper hand on the screen, and then proceeds to fully supinate/pronate one direction, and then the other direction.  The app records the limits of each motion and saves the data on the screen.  Although accuracy depends on the calibration of your devices internal electronics, the app does include the ability to calibrate itself on a level surface.  In addition, motion within the hand or wrist could account for subjective variation between subjects.  Overall, the app does what it says and allows for precise and objective measurements when a standard goniometer is unavailable.

Read more... http://toporthoapps.com/2011/11/01/forearm-goniometer/