Cavus Foot (High Arch): Causes, Problems It Causes, and Treatment

Quick answer: Treatment for cavus foot treatment follows a stepwise approach: 1) conservative care first (rest, ice, supportive footwear, OTC anti-inflammatories), 2) physical therapy and targeted exercises, 3) in-office treatments (injections, custom orthotics) if conservative fails at 4-6 weeks, 4) surgery for refractory cases. Most patients resolve at step 1 or 2. Call (810) 206-1402.

Related Conditions

✅ Medically reviewed by Dr. Tom Biernacki, DPM — Board-certified podiatrist specializing in foot & ankle surgery. View credentials.

What Is Cavus Foot (High Arch)?

Cavus foot (pes cavus) is a structural foot deformity characterized by an abnormally high arch that does not flatten with weight-bearing. Unlike flat feet—which are common, usually benign, and rarely symptomatic—cavus foot is often associated with significant clinical problems. The elevated arch places abnormal stress on the forefoot and hindfoot, leading to calluses under the metatarsal heads, heel pain, lateral ankle instability, peroneal tendon problems, and stress fractures. The rigid arch also limits the foot’s ability to absorb impact, transferring greater load to surrounding structures.

Cavus foot has two broad categories: flexible (the arch partially reduces with loading) and rigid (no reduction with weight-bearing). Rigid cavus deformity is more clinically significant and harder to treat. Severity ranges from mild high-arch feet that cause only cosmetic concern to severe deformity with claw toes, plantar fascia contracture, and near-complete loss of shock absorption.

Neurological Causes: Why a Full Workup Is Essential

Progressive or bilateral cavus foot deformity—particularly when accompanied by weakness, muscle wasting, sensory changes, or balance problems—should prompt neurological evaluation. Approximately 60–70% of cavus feet have an identifiable neurological cause, most commonly Charcot-Marie-Tooth disease (CMT, hereditary motor and sensory neuropathy), the most common inherited peripheral neuropathy. Other neurological causes include spinal cord abnormalities (syringomyelia, tethered cord), Friedreich’s ataxia, and polio sequelae.

In cavus foot with a neurological etiology, the deformity is typically progressive—it worsens over time as the neurological condition evolves. Identifying the underlying cause affects not only foot treatment but also medical management, genetic counseling (CMT is inherited), and assessment for other neurological complications. Any patient with a newly identified cavus foot should be asked about family history, weakness, and sensory changes, and referred for neurological evaluation if indicated.

Problems Caused by Cavus Foot

The high arch creates characteristic load distribution problems. The heel and forefoot bear disproportionate weight while the midfoot is unloaded. Painful plantar calluses develop under the 1st and 5th metatarsal heads (the lateral forefoot prominences). Hammertoes and claw toes form as intrinsic muscle weakness and extensor tendon tightness pull the toes into flexion. Lateral ankle instability is common—the hindfoot varus (heel tilted inward) inherent in cavus foot places the ankle in a mechanically unstable position. Peroneal tendon tears and stress fractures of the 5th metatarsal are significantly more common in cavus foot patients.

Treatment: Conservative and Surgical

Conservative management focuses on symptom control and load redistribution. Extra-depth, wide-toe-box footwear accommodates claw toe deformities and reduces forefoot pressure. Custom orthotics with metatarsal pads offload plantar prominences and provide lateral wedging to correct hindfoot varus. Ankle bracing addresses lateral instability. Physical therapy addresses peroneal and intrinsic muscle strengthening where neurologically possible.

Surgery for symptomatic cavus foot addresses the underlying structural deformity rather than just symptoms. Common procedures include: plantar fascia release to reduce arch contracture, metatarsal osteotomies to plantarflex elevated metatarsal heads, calcaneal osteotomy to correct hindfoot varus, peroneus longus to brevis tendon transfer (in CMT, the peroneus longus is overactive and plantarflexes the 1st ray—transferring it to the brevis corrects the deformity), and hammertoe corrections. For the most severe cases with rigid deformity and arthritis, triple arthrodesis (fusion of the subtalar, talonavicular, and calcaneocuboid joints) corrects alignment at the cost of hindfoot motion.

Frequently Asked Questions

Medical References & Sources

• American Orthopaedic Foot & Ankle Society — Cavus Foot
• PubMed Research — Cavus Foot Etiology and Treatment
• PubMed Research — Cavus Foot Surgical Outcomes

Dr. Tom Biernacki, DPM is a board-certified podiatric surgeon at Balance Foot & Ankle in Howell and Bloomfield Hills, Michigan. He evaluates and treats cavus foot deformity with custom orthotics, lateral ankle stabilization, and surgical reconstruction including calcaneal osteotomy, tendon transfers, and hammertoe correction.

Dr. Tom’s Top 3 — The Premium Foot Pain Stack (2026)

If you only buy three things for foot pain, get these. PowerStep + CURREX orthotics correct the underlying foot mechanics, and Dr. Hoy’s pain gel delivers fast topical relief. This is the exact stack Dr. Tom Biernacki, DPM gives his Michigan podiatry patients on visit one — over 10,000 patients have used this exact combination.

In-Office Treatment at Balance Foot & Ankle

If home treatment isn’t providing relief for your foot and ankle pain, our podiatry team at Balance Foot & Ankle can help with same-day evaluations and advanced in-office care.

Frequently Asked Questions

When should I see a podiatrist?

See a podiatrist if: foot or ankle pain has lasted more than 2–4 weeks without improvement, you’re changing your gait to avoid pain, you have an open wound or sore that isn’t healing, you notice nail discoloration or thickening, you have diabetes and any foot concern, or pain is severe enough to wake you at night. Most foot conditions are easier and cheaper to treat early — what starts as a minor issue can become a surgical problem with months of delay.

What is the difference between a podiatrist and an orthopedic surgeon?

Podiatrists (DPM — Doctor of Podiatric Medicine) specialize exclusively in the foot, ankle, and lower leg. Orthopedic surgeons (MD/DO) have broader musculoskeletal training but variable foot/ankle subspecialization. For foot and ankle-specific problems, a podiatrist often has more focused training and experience. For injuries involving the leg above the ankle, complex pediatric cases, or multi-level reconstruction, orthopedic consultation may be appropriate. We frequently co-manage patients with orthopedic colleagues.

How do I know if my foot pain is serious?

Signs that warrant same-day or next-day evaluation: severe pain that appeared suddenly without clear cause, swelling, redness, and warmth that appeared suddenly (possible gout, infection, or Charcot fracture), an open wound that looks infected (redness spreading, pus, warmth), inability to bear weight, or any foot problem in a diabetic patient. Pain that’s been present for weeks and is stable is important but not an emergency — schedule within 1–2 weeks.

Can foot problems cause back and knee pain?

Yes — this is a kinetic chain effect. Abnormal foot mechanics (overpronation, supination, leg length discrepancy) cause compensatory changes in knee, hip, and lumbar alignment. Roughly 30% of patients presenting to our clinic with knee pain have a treatable foot-level biomechanical cause. Correcting foot mechanics with orthotics or appropriate footwear often provides significant knee and back relief. If you have chronic knee or back pain and haven’t had your foot mechanics evaluated, it’s worth a consult.

Are orthotics worth it?

For the right conditions, yes — custom orthotics are among the most cost-effective interventions in podiatry. They’re most effective for: plantar fasciitis, flat feet with secondary knee/back pain, leg length discrepancy, metatarsalgia, posterior tibial tendon dysfunction, and diabetic foot pressure management. Quality OTC orthotics ($35–60) resolve symptoms for 60% of patients with mild-to-moderate conditions. Custom orthotics are appropriate when OTC options have failed or when the biomechanical problem is complex. We cast custom orthotics in-office.

How do I choose the right running shoes?

Start with your foot type (flat, neutral, high arch) and running pattern (overpronator, neutral, supinator). Flat feet and overpronators do best in stability or motion-control shoes. Neutral feet do well in neutral-cushioned shoes. High arches need maximum cushioning with flexible soles. Always buy running shoes at the end of the day (foot swelling peaks then), get properly fitted by a specialist, and replace every 300–500 miles. If you’ve been injured repeatedly, a gait analysis can identify the mechanical flaw driving your injury pattern.

What is the difference between a sprain and a fracture?

A sprain is a ligament injury (the tissue connecting bones); a fracture is a break in the bone itself. Both can occur with the same trauma (ankle roll, fall). The old test — ‘if you can walk, it’s not broken’ — is wrong; many fractures are initially weight-bearable. Key differences: a fracture typically produces localized bone tenderness along the bone itself, while a sprain is tender over the ligament. X-ray is the standard to differentiate. High-grade sprains without proper treatment can be as disabling as fractures.

How do I prevent foot and ankle injuries?

The four most impactful prevention strategies: (1) Supportive, appropriately fitted footwear for your foot type and activity. (2) Gradual activity progression — the 10% rule (never increase weekly mileage or intensity by more than 10%). (3) Regular calf and ankle mobility work. (4) Strengthening the posterior tibial tendon, peroneals, and intrinsic foot muscles. Most overuse injuries are preventable; most acute injuries are not — but ankle sprain recurrence (60–70% without rehab) is prevented by balance and proprioception training.