"Orthotics (Greek: \u039F\u03C1\u03B8\u03CC\u03C2, ortho, \"to straighten\" or \"align\") is a specialty within the medical field concerned with the design, manufacture and application of orthoses. An orthosis (plural: orthoses) is \"an externally applied device used to modify the structural and functional characteristics of the neuromuscular and skeletal system\"."@en . . .