ankle–foot orthosis
A rigid or semi-rigid external device that spans the ankle and foot to control foot drop, stabilise the ankle, and improve gait safety in patients with lower-limb neurological or musculoskeletal impairment.
Full Definition
An ankle–foot orthosis (AFO) is one of the most frequently prescribed orthotic devices in geriatric rehabilitation, particularly for patients with foot drop secondary to stroke, peroneal nerve palsy, or peripheral neuropathy. The device prevents the forefoot from dropping during the swing phase of gait, thereby reducing trips and falls. Editors must note that the term is hyphenated as 'ankle–foot orthosis' with an en dash between 'ankle' and 'foot' in formal documents, or a hyphen in informal usage—house style should be applied consistently. The acronym AFO is widely used in clinical notes and physiotherapy reports.
Usage
Usage note: Use en dash in formal text: 'ankle–foot orthosis'. Acronym AFO is acceptable after first use. Do not confuse with the KAFO, which extends to the knee.
In Context
- "An ankle–foot orthosis was fabricated for the patient following incomplete recovery of dorsiflexion strength six weeks post-stroke." — Physiotherapy discharge summary
- "The patient was reviewed by orthotics for possible AFO fitting after repeated trips attributed to foot drop during the morning therapy session." — Nursing incident report