"Orthotist", "orthopaedic brace" and "ankle-foot orthotic (AFO)" redirect here, where they are dealt with in their respective sections. Orthotics is a specialty within the medical field concerned with the design, manufacture and application of orthoses. An orthosis is an orthopedic device that supports or corrects the function of a limb or the torso. An orthopaedic brace, "appliance", or simply brace is an orthopaedic device used to: Control, guide, limit and/or immobilize an extremity, joint or body segment for a particular reason To restrict movement in a given direction To assist movement generally To reduce weight bearing forces for a particular purpose To aid rehabilitation from fractures after the removal of a cast To otherwise correct the shape and/or function of the body, to provide easier movement capability or reduce pain It combines disciplines of study within the health and physical sciences; mathematics and materials engineering, gait analysis, anatomy and physiology, pathophysiology, biomechanics and psychology contribute to the work of orthotists (professionals in the field of orthotics)...