Quick answer: Multiple Sclerosis Foot Health Drop Foot Spasticity Balance is a common foot/ankle topic that affects many patients. Effective treatment starts with a targeted diagnosis, conservative-first treatment, and escalation only when needed. We treat this regularly at our Howell and Bloomfield Hills practices. Call (810) 206-1402.
Medically Reviewed by Dr. Tom Biernacki, DPM, FACFAS — Board-certified podiatrist & foot surgeon | Balance Foot & Ankle | Last updated: May 2026
Quick Answer: Multiple Sclerosis and Foot Health
Multiple sclerosis affects foot health through several mechanisms: foot drop from peroneal nerve conduction impairment, spasticity causing equinus and varus deformity, sensory loss creating pressure ulcer risk, and balance deficits increasing fall frequency. AFO (ankle-foot orthosis) bracing is the primary intervention for foot drop, while custom orthotics address spasticity-related deformity. Podiatric care is a key component of the MS multidisciplinary team — regular evaluation prevents the foot and ankle complications that significantly accelerate mobility decline in MS patients.
Multiple sclerosis affects over 1 million people in the United States, and foot and ankle dysfunction is among the most functionally limiting aspects of the disease. Foot drop — the inability to adequately dorsiflex the foot during the swing phase of gait — affects approximately 70% of MS patients and is a major contributor to falls, reduced walking speed, and activity restriction. At Balance Foot & Ankle, we work with neurologists and rehabilitation specialists to provide the orthotic and surgical interventions that help MS patients maintain mobility and independence as long as possible.
How MS Affects the Foot and Ankle
| MS Complication | Mechanism | Foot/Ankle Effect | Treatment |
|---|---|---|---|
| Foot Drop | Corticospinal tract demyelination → peroneal nerve weakness | Toe drag, tripping, compensatory hip hike | AFO, FES (functional electrical stimulation) |
| Spasticity | Upper motor neuron lesions → exaggerated stretch reflex | Equinus, clonus, toe curling, varus | Botox, baclofen, dynamic AFO, serial casting |
| Sensory Loss | Dorsal column demyelination → proprioception/sensation loss | Pressure ulcer risk, balance impairment | Accommodative orthotics, daily skin checks |
| Fatigue | Central fatigue + Uhthoff’s phenomenon (heat sensitivity) | Worsening foot drop in heat/exertion | Cooling socks, energy conservation strategies |
| Balance/Falls | Cerebellar + vestibular + proprioceptive dysfunction | Ankle sprains, fractures from falls | High-top supportive footwear, AFO stability |
AFO Selection for MS Foot Drop
Ankle-foot orthoses are the most widely used intervention for MS foot drop, but AFO selection is not one-size-fits-all. Rigid posterior-leaf-spring AFOs provide maximal dorsiflexion assist but restrict push-off, reducing walking efficiency. Carbon fiber dynamic AFOs (e.g., Allard ToeOFF) store energy during stance and release it at toe-off, improving walking speed and reducing energy expenditure. Articulated AFOs with dorsiflexion assist are preferred when some active dorsiflexion is preserved. Functional electrical stimulation (FES) devices like the Bioness L300 stimulate the peroneal nerve to produce active dorsiflexion and may improve neural pathway recruitment compared to passive orthotics. AFO choice should be made in conjunction with a physiatrist or orthotist with MS experience.
Watch Dr. Tom compare foot drop brace options — essential for MS patients evaluating AFO choices.
Managing Spasticity-Related Foot Deformity
Spastic equinus and equinovarus are common in MS patients with significant spasticity, particularly in those with secondary progressive or progressive relapsing disease. Untreated spasticity deformity leads to contracture, pressure sores, pain, and progressive mobility loss. Botulinum toxin injections to the gastrocnemius, soleus, and tibialis posterior provide 3–6 months of spasticity reduction, allowing stretching and orthotic fitting to achieve more effective correction. Serial casting can lengthen the Achilles tendon in fixed equinus of less than 12 months duration. Severe rigid contractures may require surgical tendon lengthening to restore plantigrade positioning for orthotic use. Intrathecal baclofen pump placement is reserved for severe diffuse spasticity unresponsive to other measures.
⚠ Most Common MS Foot Care Mistake
The most common mistake I see is fitting MS patients with the same AFO design used for stroke or post-surgical drop foot, without accounting for the fluctuating nature of MS symptoms. MS foot drop worsens significantly with heat and fatigue (Uhthoff’s phenomenon) — a brace that fits well in the morning may create pressure problems when leg volume increases in the afternoon. MS patients need dynamic fitting sessions that account for volume changes, and AFOs designed with adjustable strapping systems that accommodate day-to-day variability. Rigid ill-fitting braces cause more falls and skin problems than they prevent in this population.
Fall Prevention Strategies
Falls are the leading cause of injury in MS patients — approximately 50% fall at least once per year, with 30% experiencing repeated falls. Foot and ankle interventions contribute meaningfully to fall reduction. High-top shoes or boots provide lateral ankle stability that compensates for proprioceptive deficits. Non-slip outsoles reduce slip-fall risk on smooth surfaces. AFO use reduces toe-drag trip frequency by 40–60% in clinical studies. Home modifications — removing loose rugs, installing grab bars, improving lighting — address environmental fall risk. Tai chi and balance training programs specifically designed for MS patients produce measurable improvement in dynamic balance scores.
Frequently Asked Questions
What is the best AFO for MS foot drop?
The best AFO for MS foot drop depends on residual muscle strength and symptom variability. For mild foot drop with preserved push-off strength, a carbon fiber dynamic AFO (Allard ToeOFF or similar) is typically preferred for its energy return and low profile in shoes. For moderate-to-severe drop foot with significant spasticity, a custom polypropylene posterior-leaf-spring or articulated AFO provides better spasticity resistance. For patients motivated to pursue neural rehabilitation, FES devices offer the additional benefit of potentially improving long-term neuroplasticity. A formal gait assessment by a physiatrist or experienced orthotist should precede AFO selection in MS patients.
Can foot drop from MS be reversed?
Foot drop from MS may partially improve during remissions when inflammation resolves, but established foot drop from significant demyelination is typically permanent. Early disease-modifying therapy reduces relapse frequency and may limit the accumulation of foot drop deficits over time. Functional electrical stimulation (FES) may promote some neuroplasticity and improve long-term dorsiflexion strength in early foot drop. For most patients with established foot drop, the goal is optimizing function through appropriate orthotics and rehabilitation rather than expecting full recovery. Preventing secondary complications (contracture, falls, skin breakdown) is as important as addressing the primary deficit.
How does heat worsen MS foot drop (Uhthoff’s phenomenon)?
Uhthoff’s phenomenon refers to the temporary worsening of MS symptoms with increased body temperature. Demyelinated nerve fibers are highly sensitive to temperature — even a 0.5°C increase can completely block conduction in affected axons. For MS patients with foot drop, exercise, hot weather, fever, or hot showers can dramatically worsen dorsiflexion strength for minutes to hours. Managing this means: exercising in air-conditioned environments, using cooling vests, avoiding hot baths and saunas, and planning demanding activities during cooler parts of the day. Symptoms reliably return to baseline as body temperature normalizes.
Do I need a podiatrist if I have MS?
Yes — podiatric care is an important component of MS management. A podiatrist can evaluate gait mechanics and foot deformity, prescribe appropriate AFO and orthotic devices, monitor for pressure sores and skin breakdown in areas of sensory loss, manage nail and skin conditions that MS patients cannot safely self-treat, and coordinate with the neurology and rehabilitation team. Annual podiatric visits minimum, more frequently when active symptoms or footwear issues are present.
When should an MS patient seek urgent podiatric care?
Seek same-day evaluation for any new skin wound or pressure sore, new swelling in one foot or ankle, significant worsening of foot drop or spasticity, or AFO-related skin breakdown. At Balance Foot & Ankle, we provide same-day appointments in Howell and Bloomfield Hills — call (810) 206-1402 or book online.
MS Foot Care Specialists — Howell & Bloomfield Hills, MI
Dr. Tom Biernacki DPM FACFAS | Same-day appointments available | (810) 206-1402
Book Appointment Call (810) 206-1402Related Resources
- Custom Orthotics Michigan — Podiatrist-Made Foot Supports
- Ankle Pain — Causes, Diagnosis & Treatment Options
- Diabetic Foot Care — Neuropathy and Wound Prevention
- New Patient Information — Balance Foot & Ankle
Visit Balance Foot & Ankle — Same-Day Appointments Available
Our podiatry team serves patients throughout Michigan including Howell, Brighton, and Bloomfield Hills. If you’re dealing with heel pain, ingrown toenails, or a foot injury, we have same-day appointment availability.
Same-day appointments available. (810) 206-1402
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Shop Doctor Hoy’s →Frequently Asked Questions
When should I see a podiatrist?
If symptoms persist past 2 weeks, affect your normal activity, or are accompanied by red-flag symptoms (warmth, redness, swelling, inability to bear weight).
What does treatment cost?
Most diagnostic visits and conservative treatments are covered by Medicare and major insurers. Out-of-pocket costs vary by your specific plan.
How quickly can I get an appointment?
Most non-urgent cases see us within 5 business days. Urgent cases (sudden pain, possible fracture) typically same or next business day.
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.