The Z-Axis Shoulder Joint - A New Concept

dc.contributor.author	Williams, T. Walley, III	en_US
dc.date.accessioned	2011-10-04T13:20:54Z
dc.date.available	2011-10-04T13:20:54Z
dc.date.issued	1997	en_US
dc.identifier.citation	From "MEC 97," Proceedings of the 1997 MyoElectric Controls/Powered Prosthetics Symposium Fredericton, New Brunswick, Canada: August, 1997. Copyright University of New Brunswick.	en_US
dc.identifier.uri	http://hdl.handle.net/10161/4899
dc.description.abstract	It is difficult for a shoulder amputee to do anything while sitting at a desk or table with the elbow tucked in against the side. For useful work the elbow needs to move forward 30-45 degrees and out 30-45 degrees to a position of function. These moves require a well designed shoulder joint. Conventional friction joints are constrained to move about an abduction axis followed by a forward flexion axis with both motions against gravity. An ideal shoulder moves 'out' away from vertical and then locks. It then swings forward or back around the vertical Z axis with no gravitational constraint. Such a joint places the forearm in a convenient location for useful work.	en_US
dc.publisher	Myoelectric Symposium	en_US
dc.title	The Z-Axis Shoulder Joint - A New Concept	en_US