¶ Introduction
An ankle foot orthosis (AFO) is a biomechanical device that provides support to the foot and ankle, especially when walking. AFOs are prescribed for a variety of conditions; in the case of ALS, their primary function is to help provide sufficient toe clearance while walking.
¶ Types of AFOs
AFOs are available in different types and can be either purchased off-the-shelf or custom-made.
Off-the-shelf AFOs often need minor adjustments, such as heating to reshape or adding small pads to alleviate pressure points.
Custom-made AFOs generally cost more than off-the-shelf options but provide a better fit.
¶ Suitability Period
| Start using when… | Stop using when… | |
|---|---|---|
| Still able to walk independently for moderate distances, but there are some minor fatigue and balance issues; foot drop | ↔ | Walking has become difficult and unstable, even with use of AFOs |
¶ Qualification Criteria
Buying AFOs without a prescription from an occupational therapist or physiatrist is generally possible, however, higher grade AFOs, including custom-made AFOs will generally require a prescription. Insurance companies will only cover AFOs that have been prescribed.
¶ Other Considerations
AFOs which are not lightweight will have a limited useful lifespan with an ALS patient.