Orthosis
Pronunciation: or-THOH-sis
An externally applied device used to support, align, prevent, or correct deformities, or to improve the function of movable body parts.
Full Definition
An orthosis is a brace, splint, or support device applied externally to the body to modify structural or functional characteristics of the musculoskeletal or neuromuscular system. Unlike prostheses, orthoses are used alongside a body part that is still present, not in replacement of it. The plural form is 'orthoses.' The field of practice is orthotics, and the practitioner is an orthotist. Editors frequently encounter this term in rehabilitation medicine, sports medicine, and pediatric clinical documents.
Usage
Usage note: The plural is 'orthoses,' not 'orthosises.' Do not use interchangeably with 'prosthesis.'
In Context
- "The patient was prescribed a dynamic ankle–foot orthosis to address drop foot following a stroke." — Rehabilitation prescription
- "Care must be taken not to substitute 'orthosis' with 'prosthesis' when the patient's limb remains intact." — Clinical documentation guideline