Foot Callus

What is a Foot Callus?

A callus, also known as hyperkeratosis, is a diffuse and uniform thickening of the superficial layer of the skin (epidermis) that develops in response to repeated pressure or friction. Unlike a corn, which has a painful central core, a callus is widespread, hard, yellowish in texture, and generally less localized. It forms mainly on the sole of the foot, under the metatarsal heads, on the heel, or on the side of the foot.

Although a callus is a natural protective reaction of the skin, excessive thickening can become a significant source of discomfort or even pain when walking.

Causes and Risk Factors

• Chronic pressure or friction on a localized area of the foot
• Poorly fitted shoes, too tight, or with rigid soles
• Abnormal plantar pressure: flat feet, high-arched feet, hallux valgus
• Abnormal gait or biomechanical imbalance
• Prolonged standing or walking
• Repetitive sports activities (running, hiking)
• Naturally dry skin or tendency toward hyperkeratosis
• Advanced age (reduction of plantar fatty tissue)

Symptoms

• Thickened, hard, yellowish or greyish skin on the sole of the foot
• Rough, dry surface, sometimes cracked
• Feeling of discomfort, burning, or dull pain when walking
• Sensation of walking on an abnormal thickness
• Reduced sensitivity in the affected area
• Risk of cracking and infection if the callus is neglected

Podiatric Treatment

Your podiatrist at Clinique Claire Fontaine performs precise and painless treatment to eliminate the callus and address the underlying cause:

• Mechanical keratolysis: removal of thickened skin using a scalpel or podiatric burr to restore a healthy and comfortable plantar surface
• Application of keratolytic agents (salicylic acid, urea) to soften and reduce hyperkeratotic skin
• Biomechanical gait analysis to identify the pressure zones responsible
• Custom orthopedic insoles to redistribute plantar pressure and reduce localized stress
• Therapeutic moisturization of the skin to maintain suppleness and prevent recurrence
• Personalized advice on appropriate footwear and daily home care routines

Prevention

To limit the formation of calluses, it is advisable to moisturize the skin of the feet daily with an emollient cream, wear comfortable shoes with a flexible sole and adequate toe room, use comfort insoles when needed, avoid prolonged standing on hard surfaces, and visit your podiatrist regularly for preventive foot care.