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AFO – Purpose for Foot Drop — SCE Neurology MCQ

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EasyNeurorehabilitationAFO – Purpose for Foot DropSCE Neurology

A 65-year-old man with MS has progressive difficulty walking (EDSS 6.5). He uses bilateral walking sticks. His physiotherapist recommends an ankle-foot orthosis (AFO) for bilateral foot drop. What is the purpose of an AFO?

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Correct answer: C — An AFO supports the ankle in a neutral or slightly dorsiflexed position during swing phase, preventing foot drop and toe drag, improving foot clearance and gait safety

An AFO (ankle-foot orthosis) is a brace that holds the ankle in a neutral or slightly dorsiflexed position. During the swing phase of gait, it prevents the foot from dropping (plantarflexion) due to weak dorsiflexors, reducing tripping and falls. It also stabilises the ankle during stance phase. Types include: rigid AFO (fixed ankle), articulated AFO (allows some plantarflexion for more natural gait), and posterior leaf spring AFO (lightweight, allows some flexibility). A: It does not strengthen muscles — it compensates for weakness. C: It is not primarily an anti-spasticity device. D: It does not improve proprioception. E: It does not correct leg length.

Reference: NICE NG100 MS; RCP Stroke Guidelines