Adult Acquired Flatfoot

What is an Adult Acquired Flatfoot?

Understanding the condition

Adult acquired flatfoot, also known as adult flat feet, develops when the collapsed foot arch gradually loses its normal shape over time, leading to foot arch pain, swelling, ankle pain, and walking difficulty. The condition most often results from posterior tibial tendon dysfunction (PTTD), in which the tendon that supports the arch becomes stretched or torn. As the arch weakens and fallen arches develop, the foot rolls inward (overpronation), causing foot rolling inward, abnormal gait, and progressive foot deformity if not properly treated. Early adult flatfoot treatment is essential to relieve symptoms and slow the progression of the condition.

When to suspect Adult Acquired Flatfoot?

Signs & Symptoms

Gradual flattening of the foot arch

Pain or swelling along the inside of the ankle

Foot turning outward or ankle leaning inward

How We Diagnose Adult Acquired Flatfoot

Diagnosis of adult acquired flatfoot begins with a detailed clinical examination to assess arch height, foot flexibility, and tendon strength. Dr. Malek Abu-Al-Nadi, an adult flatfoot specialist and foot & ankle specialist, evaluates gait mechanics and may perform the “heel rise test” to assess posterior tibial tendon dysfunction (PTTD) and overpronation.
X-rays, ultrasound, or MRI imaging help determine tendon integrity, joint alignment, the collapsed foot arch, and the extent of foot deformity. This comprehensive assessment enables an accurate diagnosis and guides a personalized adult flatfoot treatment plan aimed at restoring stability, improving function, and preventing further progression.

How is Adult Acquired Flatfoot treated?

How We Heal Adult Acquired Flatfoot

Custom orthotics and supportive footwear to improve alignment and reduce strain
Bracing to stabilize the arch and control motion in more advanced cases
Physical therapy to strengthen the posterior tibial tendon and surrounding muscles
Anti-inflammatory medications to relieve pain and swelling
Lifestyle modifications, including weight management and activity adjustments

How is surgery performed?

If the condition progresses or conservative treatment fails, surgical intervention may be necessary to correct the deformity and restore alignment. Procedures may include: Tendon repair or transfer to restore strength and stability Bone cuts (osteotomies) to reshape and rebuild the arch Fusion procedures (arthrodesis) for severe deformities or arthritis-related collapse

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At The Modern Podiatry, Dr. Malek Abu Al Nadi combine advanced diagnostics, evidence-based treatments, and personalized rehabilitation plans to ensure a safe and complete recovery for ankle sprains.