Cracked Heels (Heel Fissures) – Beyond the Cosmetic Problem

Cracked Heels (Heel Fissures) – Beyond the Cosmetic Problem You've probably noticed the cracks—unsightly fissures running across your heels that seem to worsen as Florida's dry season progresses. While many people dismiss cracked heels as merely a cosmetic concern, the reality is quite different. Heel fissures can become painful, lead to infection, and indicate underlying foot conditions that deserve proper attention. At Central Florida Foot & Ankle Institute, Dr. Carli Hoover helps patients understand what causes cracked heels and how to treat them properly before they develop into serious problems. What Are Heel Fissures? Heel fissures are deep cracks in the skin on your heel. The cracks typically run perpendicular to the skin surface and can range from shallow, barely noticeable splits to deep, painful fissures that penetrate through multiple layers of skin. Depending on their severity, they can cause pain, bleed, become infected, or expose deeper tissue layers. Unlike cracked skin elsewhere on your body, heel fissures are particularly common and problematic because your heel experiences enormous pressure with every step you take. Your heels bear 50 percent of your body weight while walking and must absorb substantial impact forces. Additionally, the skin on your heels has fewer oil glands than skin elsewhere on your body, making it naturally drier and more prone to cracking. Why Your Heels Crack: Multiple Contributing Factors Dry Skin (Xerosis) Dehydrated skin is the foundation for heel fissures. In Florida, despite our humidity, indoor air conditioning and various environmental factors can dry your skin significantly. Heels are particularly vulnerable because the skin there naturally has fewer sebaceous glands—the glands that produce protective oils—compared to other body areas. As you age, your skin produces less of the natural oils that keep it supple and prevent cracking. This is why heel fissures become more common with advancing age. Foot Mechanics and Pressure Distribution Your heel's structural characteristics make it prone to fissuring. The skin on your heel must stretch and compress with each step. If your foot mechanics place excessive pressure on specific areas of your heel, or if your heel pad is thin or doesn't function optimally, the repeated stress can cause the skin to crack. Foot Structure Issues Certain foot structures increase fissure risk. If you have flat feet (pes planus) or high arched feet (pes cavus), your heel may bear pressure differently, concentrating stress in certain areas. This unequal pressure distribution can accelerate fissure formation. If you overpronate (your foot rolls inward excessively) while walking, the position of your heel when it contacts the ground changes, and pressure distribution shifts toward the inner edge of your heel, increasing fissure risk. Plantar Fasciitis Connection The plantar fascia—the thick ligament running along the undersurface of your foot from your heel to your toes—connects to your heel bone. When your plantar fascia becomes tight and inflamed (plantar fasciitis), it increases stress on your heel. This increased mechanical stress accelerates heel fissure formation. Many people with plantar fasciitis also develop heel fissures. Weight and Activity Your body weight significantly affects heel pressure. Carrying extra weight increases the force through your heel with every step. Similarly, increased activity—particularly walking or standing on hard surfaces—increases the mechanical stress causing heel fissures. Floridians who are very active—whether that's training for athletics in the summer heat, working on their feet during our warm season, or staying active throughout the year—may be more prone to heel fissures due to increased activity levels. Footwear Choices Open back shoes like sandals and flip flops, while comfortable in Florida's climate, can contribute to heel fissures. Without support around the heel, the heel pad spreads laterally with each step, stretching the skin and increasing fissure risk. Backless shoes also fail to contain moisture, allowing heels to dry out more rapidly. Conversely, tight shoes that rub excessively can also cause problems, though usually more localized to specific areas of the heel. Medical Conditions Certain underlying conditions increase heel fissure risk significantly. Diabetes, particularly if your blood sugar control isn't optimal, reduces your skin's ability to heal and increases skin dryness. Hypothyroidism, psoriasis, atopic dermatitis, and other skin conditions are associated with increased fissuring. Environmental Factors While Florida's climate is warm and humid, spending time in air conditioning, which dries indoor air, can paradoxically increase skin dryness. Harsh soaps or certain foot products can strip away natural skin oils. Walking barefoot on hard, dry surfaces increases fissure risk. Symptoms Beyond Cosmetic Concerns Pain Unlike shallow cracks, deep heel fissures hurt. The pain typi