Rarely used term for an orthopedic brace, splint, or appliance. ... Origin: ortho-+ -esis, process ... (05 Mar 2000) ... 
(or-the´sis) orthosis.
Type: Term Pronunciation: ōr-thē′sis Definitions: 1. Rarely used term for an orthopedic brace, splint, or appliance.
orthesis An orthopedic appliance or apparatus used to support, to align, to prevent, or to correct deformities or to improve the functions of movable parts of the body.