Flat feet have little or no visible arch along the inner edge, and this can lead to other health problems. Some people inherit low arches, and others lose arch height over time. When the arch collapses, the foot rolls inward and changes how weight moves through your legs, placing extra strain on muscles, tendons, and joints. This is how flat feet can cause other issues:
Ankle Rolling
A flat arch offers less support along the inside of the foot, so the ankle tends to roll inward. Doctors call this motion overpronation. Since the ankle moves past its normal range, the ligaments around it stretch and weaken over time.
If your ankle rolls often, you may notice uneven wear on the inner edge of your shoes. Some people feel pain on the outer ankle, and others feel aching along the inner shin. Watch for these signs:
- Frequent ankle sprains on uneven ground
- Pain along the inside of the ankle or arch
- Shoes that tilt inward when set on a flat surface
- Tired feet or legs after standing
Supportive footwear helps limit inward rolling from flat feet. When you shop for shoes, look for a firm heel counter and a stable midsole. Over-the-counter arch supports offer basic help, but custom orthotics match the exact shape of your foot.
Achilles Tendonitis
As flat feet roll inward, the heel twists slightly with each step, and this pulls the Achilles tendon at an angle. The tendon absorbs the extra strain, and it may become thick, stiff, or sore. Pain typically starts just above the heel bone. If you notice swelling or a thickened tendon, reduce high-impact activity and stretch your calves gently. A small heel lift in your shoe may also ease tension.
Plantar Fasciitis
The plantar fascia runs from your heel to your toes, and it supports the arch like a bowstring. When the arch flattens, this band of tissue stretches farther with every step. Repeated stretching leads to small tears and inflammation near the heel. Doctors call this condition plantar fasciitis.
The classic symptom is sharp heel pain with your first steps in the morning. The pain often eases during the day, but it may return after long periods of standing. Before you get out of bed, calf and arch stretches may reduce tension.
Bunions or Hammertoe
When the foot rolls inward, extra pressure shifts to the big toe joint. The big toe may drift toward the second toe, and a bony bump called a bunion forms. The smaller toes grip harder for balance and may bend into a hammertoe shape. Look for these early signs:
- Bump at the base of the big toe
- Redness or rubbing where shoes press
- Toes that stay bent at the middle joint
- Corns on top of curled toes
Get Treated for Flat Feet
A podiatrist checks your arch, gait, and shoe wear during an exam. If symptoms appear in your ankle, heel, or toes, an exam helps identify whether flat feet play a role. Treatment may include orthotics, stretching, or physical therapy, and it depends on your specific symptoms. Schedule an appointment at a foot and ankle center today.
