ankle-foot orthosis


Also found in: Dictionary, Acronyms, Encyclopedia, Wikipedia.

ankle-foot orthosis

an orthosis beginning at the toes, crossing the ankle, and terminating on the calf.
Enlarge picture
ANKLE-FOOT ORTHOSIS

ankle-foot orthosis

Abbreviation: AFO
Any of a class of external orthopedic appliances, braces, or splints devised to control, limit, or assist foot and ankle motion and provide leg support. Typically, orthotics are made of lightweight materials such as thermoplastics. See: illustration

Patient care

A variety of ankle-foot orthoses are used. In the treatment of Achilles' tendon rupture, e.g., the orthosis holds the foot at a right angle to the horizontal plane of the body, in plantar flexion.

See also: orthosis
References in periodicals archive ?
3D Finite Element Analysis of Ankle-Foot Orthosis on Patients with Unilateral Foot Drop: A Preliminary Study.
Hermens, "The effect of an ankle-foot orthosis on walking ability in chronic stroke patients: a randomized controlled trial," Clinical Rehabilitation, vol.
Yasui, "Development of an ankle-foot orthosis with an oil damper," Prosthetics and Orthotics International, vol.
Figure 4.Energy return ratio comparison between testing and prediction(relative errors for ankle-foot orthosis [AFO] 1, AFO2, and AFO3 are 2.68%, 0.02%, and 19.09%, respectively).F Testing (Average) prediction AFO1 96.80% 94.20% AFO2 88.20% 81.18% AFO3 77.40% 62.26% Note: Table made from bar graph.
Effects of an ankle-foot orthosis on balance and walking after stroke: a systematic review and pooled meta-analysis.
He was prescribed an ankle-foot orthosis, but rarely used it because he said it was uncomfortable.
Patient was able to walk with a custom-made plastic ankle-foot orthosis (PAFO) and a walker.
Assistive Joint Constraint Device Hip Knee Ankle FNS IRGO Only IRGO Locked Locked None FNS Only None None AFO Open-Loop HNPIRGO IRGO SCKM Locked Open-Loop HNP open VCHM SCKM Locked Open-Loop HNP VCHM SCKM Locked Rule-Based Feedback AFO = ankle-foot orthosis, FNS = functional neuromuscular stimulation, HNP = hybrid neuroprosthesis, IRGO = isocentric reciprocating gait orthosis, SCKM = stance-control knee mechanism, VCHM = variable-constraint hip mechanism.
These mechanisms include a double-shell ankle-foot orthosis that pushes up on a control rod during weight-bearing, a hinged footplate that engages knee-flexion resistance based on ankle angle, or a pneumatic bladder that engages upon weight-bearing.
The prescribed orthoses were as follows: resting splint (n:10), hip-knee-ankle-foot orthosis (HKAFO) (long leg walking brace) [n=21, 46%; (17 (37%) with waist belt)], metal ankle-foot orthosis (short leg walking brace) (n=6, 13%), plastic ankle-foot orthosis [(n=7; hinged 5 (11%), 2 solid (4%)], and posterior shell (n=8, 17%).
The first system to be introduced clinically for gait compensation was a mechanical structure that locked or limited joint movement during the stance phase of gait, such as the ankle-foot orthosis (AFO), the knee-AFO (KAFO), or the hip-KAFO (HKAFO), depending on the specific joint weakness.
The ankle-foot orthosis (AFO) constrained the ankle joint to neutral.