High Arches (Cavus Foot): Why Supination Causes So Many Injuries

Reviewed by Dr. Tom Biernacki, DPM, FACFAS

Board-certified foot & ankle surgeon · 3,000+ surgeries · @MichiganFootDoctors (950K+ subscribers)

Last reviewed May 11, 2026 · (810) 206-1402

Medically reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatric Surgeon — Balance Foot & Ankle, Howell & Bloomfield Township, MI. Last updated April 2026.

High-arched feet — known medically as pes cavus or cavus foot — are less common than flat feet but carry their own significant injury risks that are frequently underappreciated. Where flat feet cause problems through excessive motion and collapse, cavus feet cause problems through excessive rigidity and poor shock absorption.

What Is a High-Arched (Cavus) Foot?

Cavus foot is characterized by an unusually high medial arch that doesn’t flatten sufficiently during weight-bearing. The elevated arch creates a rigid, poorly cushioned foot that concentrates plantar pressure at the heel and ball of the foot, rather than distributing it across the midfoot arch as in a normal or flat foot.

The characteristic deformity pattern includes: high medial arch, heel in varus (angled inward), forefoot supination, prominent metatarsal heads, claw toe deformities from intrinsic muscle imbalance, and a shortened foot length. The combination creates a foot that strikes the ground primarily on the outer border rather than accepting a controlled heel-to-toe loading pattern.

Causes of Cavus Foot

Cavus foot can be idiopathic (of no identified cause, often hereditary) or neurological. The most important distinction is between progressive neurological cavus and stable idiopathic cavus:

• Neurological causes: Charcot-Marie-Tooth (CMT) disease is the most common neurological cause — a hereditary motor and sensory neuropathy that progressively weakens peroneal and intrinsic foot muscles, leading to progressive cavus deformity. Any progressive unilateral cavus foot should prompt evaluation for underlying neurological disease.
• Idiopathic/hereditary: Many cavus feet have no identifiable neurological cause and are simply familial anatomical variants. These are typically bilateral and stable over time.
• Post-trauma: Compartment syndrome sequelae, malunited calcaneal fractures, and other traumatic causes can produce unilateral cavus deformity.

Injuries Associated with High-Arched Feet

Cavus foot significantly increases the risk of several specific injuries and conditions:

• Chronic ankle instability: The laterally inverted heel position of cavus foot increases inversion stress with every step, predisposing to recurrent lateral ankle sprains and eventual ligamentous laxity.
• Stress fractures: Particularly of the fifth metatarsal and lateral ankle — sites of concentrated loading in the supinated cavus foot. The Jones fracture (fifth metatarsal diaphyseal fracture) has a well-established association with cavus foot biomechanics.
• Peroneal tendon tears: The laterally loaded cavus foot stresses the peroneal tendons chronically, leading to tendinopathy and longitudinal tears — particularly of the peroneus brevis.
• Plantar fasciitis: Paradoxically, both flat and high-arched feet can develop plantar fasciitis — in cavus feet, the fascial tension is elevated by the high arch position rather than by strain from arch collapse.
• Metatarsalgia and stress fractures: The high plantar pressure at the first, second, and fifth metatarsal heads produces pain, callus, and eventual stress fractures.
• Claw toes: Intrinsic muscle imbalance in cavus feet produces claw toe deformities where the MTP joints are hyperextended and IP joints are flexed — causing dorsal IP joint calluses and metatarsal head calluses.

Treatment for Cavus Foot

Conservative management focuses on improving shock absorption and reducing lateral loading:

• Custom orthotics with lateral heel posting (valgus wedge) to correct the inverted heel position, plus extra cushioning at the heel and metatarsal heads to compensate for poor shock absorption
• Neutral or cushioned shoes with a wide heel base — NOT motion control shoes (which are designed for overpronation and would worsen lateral loading in a cavus foot)
• Ankle bracing for patients with chronic ankle instability
• Physical therapy addressing calf flexibility, peroneal strengthening, and proprioception

Surgical intervention — including calcaneal osteotomy to correct heel varus, plantar fascia release, and tendon transfers — is reserved for progressive or severely symptomatic cases that fail conservative management.

Your Board-Certified Podiatrists

Dr. Tom Biernacki, DPM

Board-Certified · FACFAS

Dr. Carl Jay, DPM

Board-Certified Podiatrist

Dr. Daria Gutkin, DPM

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In-Office Treatment at Balance Foot & Ankle

If home care isn’t resolving your your foot or ankle concern, a visit with a board-certified podiatrist is the fastest path to accurate diagnosis and a personalized plan. At Balance Foot & Ankle Specialists, Dr. Tom Biernacki, Dr. Carl Jay, and Dr. Daria Gutkin offer same-day and next-day appointments at both our Howell and Bloomfield Township offices. We perform on-site diagnostic ultrasound, digital X-ray, conservative care, advanced regenerative treatments, and minimally invasive surgery when indicated.

Call (810) 206-1402 or request an appointment online. Most insurance plans accepted, including Medicare, Blue Cross Blue Shield, Aetna, Cigna, and United Healthcare.

Most Common Mistake We See

The most common mistake we see is: Waiting too long before seeking care. Fix: any foot pain lasting more than 4 weeks, or any sudden severe symptom, deserves a professional evaluation rather than more rest.

Warning Signs That Need Same-Day Care

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When to See a Podiatrist

If foot or ankle pain has been bothering you for more than a few weeks, home care alone may not be enough. Balance Foot & Ankle offers same-week appointments at our Howell and Bloomfield Township clinics — no referral needed in most cases. Bring your current shoes and a short list of symptoms and we’ll build you a treatment plan in one visit.

Call Balance Foot & Ankle: (810) 206-1402  ·  Book online  ·  Offices in Howell & Bloomfield Township

Dr. Tom Biernacki, DPM

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.