Electric Wheelchair With Joystick Joysticks In power wheelchairs can significantly improve the user's independence and make it easier to use. However, standard joysticks may be incompatible with the individualized features of hand dysfunction. This study evaluated the efficacy and satisfaction of customized power wheelchair joysticks fabricated with 3D printing technology. http://www.stes.tyc.edu.tw/xoops/modules/profile/userinfo.php?uid=1678249