Medically reviewed by Dr. Tom Biernacki, DPM
Board-certified podiatric surgeon | Balance Foot & Ankle, Howell & Bloomfield Hills, MI
Last reviewed: May 2026

| MS Foot Complication | Mechanism | Clinical Presentation | Podiatric Intervention |
|---|---|---|---|
| Foot drop | Dorsiflexor weakness (UMN lesion) | Toe dragging, steppage gait | AFO — solid or articulated; FES device |
| Spastic equinus | Calf spasticity holds foot in plantarflexion | Toe walking, equinus deformity | Serial casting, Botox, AFO, Achilles stretching |
| Sensory loss | Demyelination of sensory pathways | Numbness, dysesthesia, reduced proprioception | Custom protective orthotics, regular skin checks |
| Hammertoes / claw toes | Intrinsic/extrinsic muscle imbalance | Contracted toes, pressure sores | Toe pads, orthotics, surgical correction if severe |
| Fatigue-related gait changes | MS fatigue worsens foot clearance | Increased fall risk in afternoon | Lightweight AFO; energy-conserving gait training |
| AFO Type | Indication | Pros | Cons |
|---|---|---|---|
| Solid AFO | Severe foot drop + spasticity | Maximum support, controls equinus | Restricts push-off; heavier |
| Articulated AFO | Moderate foot drop, some calf strength | Allows dorsiflexion assist; more natural gait | Less spasticity control than solid |
| Carbon fiber AFO | Mild-moderate foot drop, active patients | Lightweight, energy return | Not suitable for spasticity |
| FES (WalkAide/Bioness) | Central foot drop without severe spasticity | Stimulates natural muscle activation | Expensive; requires functioning nerve |
| Dynamic AFO (DAFO) | Pediatric or mild adult cases | Lightweight, improved proprioception | Limited support for severe weakness |
Quick answer: Multiple Sclerosis Foot Pain has multiple potential causes including mechanical, neurological, vascular, and inflammatory. The most common causes we identify are overuse, ill-fitting shoes, and biomechanical imbalance. Red flags requiring urgent evaluation: warmth/redness (infection), inability to bear weight (fracture), and unilateral swelling without injury (DVT). Call (810) 206-1402.
Medically Reviewed | Dr. Tom Biernacki, DPM | Board-Certified Podiatrist | Balance Foot & Ankle, Michigan
The most important clinical decision with Multiple Sclerosis Foot Pain isn’t which treatment to start with — it’s identifying the correct subtype. That changes everything. Call (810) 206-1402.
The most important clinical decision with Multiple Sclerosis Foot Pain isn’t which treatment to start with — it’s identifying the correct subtype. That changes everything. Call (810) 206-1402.
MS and Foot Mechanics
Multiple sclerosis affects foot function through neurological disruption at multiple levels. Demyelinating plaques can affect the corticospinal tracts (causing spasticity), peripheral nerve connections (causing weakness and sensory loss), and the cerebellum (causing balance and coordination impairment). The feet are disproportionately affected because they are the most distal and require the most precise neural control for safe ambulation.
Foot Drop
Weakness of dorsiflexion (lifting the foot) from peroneal nerve involvement or corticospinal tract demyelination. The foot drags during swing phase, dramatically increasing fall risk. Management: ankle-foot orthosis (AFO) — a rigid or semi-rigid plastic brace that holds the foot in dorsiflexion during swing. Functional electrical stimulation (FES) devices (Bioness L300, WalkAide) stimulate the peroneal nerve during swing for a more natural gait correction. FES is preferred by many MS patients for its more natural feel compared to rigid AFO.
Spastic Equinovarus
Spasticity of the plantar flexors combined with invertor hypertonicity creates an equinovarus posture (foot pointed down and in). This is the most common MS gait deviation. Management: antispasticity medications (baclofen, tizanidine), Botulinum toxin injections into the gastrocnemius-soleus and tibialis posterior, and AFO bracing. Physical therapy maintaining range of motion is essential — spastic muscles shorten rapidly without stretching.
Uhthoff’s Phenomenon
Temporary worsening of MS symptoms (including foot drop and spasticity) with heat. This is a pure neurological phenomenon — increased temperature slows conduction in demyelinated axons. Management: cooling strategies (cooling vests, cool foot soaks) before activity, avoiding exertion in heat. Not a sign of relapse — resolves when body temperature normalizes.
Frequently Asked Questions
Should people with MS see a podiatrist? Yes — regular podiatric care is particularly important for MS patients who have sensory loss (cannot feel injury), spasticity-related pressure points, and mobility limitations that make self-care difficult. Nail care, callus management, and orthotic fitting are all higher-stakes for MS patients than for the general population.
What footwear is best for MS? Shoes with firm heel counters and wide toe boxes, accommodating AFO bracing if needed. Velcro or elastic laces for patients with hand weakness. Rocker soles for those with spastic equinus to support smoother roll-through.
Michigan Foot Pain? See Dr. Biernacki In Person
Same-week appointments at our Howell and Bloomfield Hills offices.
In-Office Treatment at Balance Foot & Ankle
If home treatment isn’t providing relief for your neuropathy, our podiatry team at Balance Foot & Ankle can help with same-day evaluations and advanced in-office care.
PubMed: Multiple Sclerosis and Foot Complications
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Dr. Tom Biernacki, DPM is a double board-certified podiatrist and foot & ankle surgeon at Balance Foot & Ankle Specialists in Southeast Michigan. With over a decade of clinical experience, he specializes in heel pain, bunions, diabetic foot care, sports injuries, and minimally invasive surgery. Dr. Biernacki is a member of the APMA and ACFAS, and his patient education content on MichiganFootDoctors.com and YouTube has reached over one million views.
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Dr. Tom Biernacki, DPM is a board-certified foot & ankle surgeon (ABFAS & ABPM) at Balance Foot & Ankle Specialists in Southeast Michigan. With over a decade of clinical experience, he specializes in heel pain, bunions, diabetic foot care, sports injuries, and minimally invasive surgery. Dr. Biernacki is a member of the APMA and ACFAS, and his patient education content on MichiganFootDoctors.com and YouTube has made him one of the most-followed foot & ankle educators on YouTube.