Design and Fabrication of a Six Degree-of-Freedom Open Source Hand.

Currently, most externally powered prostheses are controlled using electromyography (or EMG), which is the measure of the electrical signals that are produced when voluntary muscle is contracted. One of the major problems is that there are a limited number of muscular control sites that can be used, which limits the complexity of the hands that are controllable. Many upper-limb prosthetics researchers are searching for methods to simply and effectively control complex prosthetic hands, and a significant number of these researchers have utilized virtual hands and other simulations to perform testing of these control algorithms (oftentimes on able bodied subjects).

MRI of the Ex-PRESS stainless steel glaucoma drainage device.

Aim: To evaluate the magnetic properties of the Ex-PRESS stainless steel glaucoma drainage device during MRI.

Design: Experimental study.

Methods: The Ex-PRESS glaucoma drainage device (316L stainless steel) was examined for magnetic field interactions under standard 1.