Freely available Pollexograph most reliable angle-based method for measuring thumb radial abduction

The Pollexograph was initially developed by Ruud Selles and colleagues from the Erasmus MC to measure palmar abduction of the thumb. A recent open-access study from Holzbauer and colleagues from Austria and Germany now shows that it is also easy to use and reliable for measuring radial abduction of the thumb.

On Research Gate, you can find a tutorial on how to make your own Polloxograph, needing little more and a printer and some paper.