Becoming flatfooted can be a real health issue for people. The advice from healthcare experts is to pay attention to foot pain, and when it happens, to seek help right away. In the last 20 years, adult-acquired flatfoot has become a more commonly recognized health issue. The cause is a dysfunction of the ankle tendon that attaches to the bones on the inside of your foot. The function of this posterior tibial tendon (PTT) is to maintain the foot arch and provide strength during push-off when you walk. When the PTT is not functioning correctly, you tend to lose your arch, or become more flatfooted. This problem occurs about three times more often in women than in men, especially after the age of 40. Initially, PTT dysfunction is associated with pain on the inside of the ankle, swelling and sometimes a limp. If left unchecked, the arch appears to collapse and the pain on the inside of the ankle worsens. Eventually, if left unchecked, patients will begin to feel pain on the outside of the ankle, too.
A person with flat feet has greater load placed on the posterior tibial tendon which is the main tendon unit supporting up the arch of the foot. Throughout life, aging leads to decreased strength of muscles, tendons and ligaments. The blood supply diminishes to tendons with aging as arteries narrow. Heavier, obese patients have more weight on the arch and have greater narrowing of arteries due to atherosclerosis. In some people, the posterior tibial tendon finally gives out or tears. This is not a sudden event in most cases. Rather, it is a slow, gradual stretching followed by inflammation and degeneration of the tendon. Once the posterior tibial tendon stretches, the ligaments of the arch stretch and tear. The bones of the arch then move out of position with body weight pressing down from above. The foot rotates inward at the ankle in a movement called pronation. The arch appears collapsed, and the heel bone is tilted to the inside. The deformity can progress until the foot literally dislocates outward from under the ankle joint.
Your feet tire easily or become painful with prolonged standing. It's difficult to move your heel or midfoot around, or to stand on your toes. Your foot aches, particularly in the heel or arch area, with swelling along the inner side. Pain in your feet reduces your ability to participate in sports. You've been diagnosed with rheumatoid arthritis; about half of all people with rheumatoid arthritis will develop a progressive flatfoot deformity.
Diagnostic testing is often used to diagnose the condition and help determine the stage of the disease. The most common test done in the office setting are weightbearing X-rays of the foot and ankle. These assess joint alignment and osteoarthritis. If tendon tearing or rupture is suspected, the gold standard test would be MRI. The MRI is used to check the tendon, surrounding ligament structures and the midfoot and hindfoot joints. An MRI is essential if surgery is being considered.
Non surgical Treatment
A painless flatfoot that does not hinder your ability to walk or wear shoes requires no special treatment or orthotic device. Other treatment options depend on the cause and progression of the flatfoot. Conservative treatment options include making shoe modifications. Using orthotic devices such as arch supports and custom-made orthoses. Taking nonsteroidal anti-inflammatory drugs such as ibuprofen to relieve pain. Using a short-leg walking cast or wearing a brace. Injecting a corticosteroid into the joint to relieve pain. Rest and ice. Physical therapy. In some cases, surgery may be needed to correct the problem. Surgical procedures can help reduce pain and improve bone alignment.
If conservative treatments don?t work, your doctor may recommend surgery. Several procedures can be used to treat posterior tibial tendon dysfunction; often more than one procedure is performed at the same time. Your doctor will recommend a specific course of treatment based on your individual case. Surgical options include. Tenosynovectomy. In this procedure, the surgeon will clean away (debride) and remove (excise) any inflamed tissue surrounding the tendon. Osteotomy. This procedure changes the alignment of the heel bone (calcaneus). The surgeon may sometimes have to remove a portion of the bone. Tendon transfer: This procedure uses some fibers from another tendon (the flexor digitorum longus, which helps bend the toes) to repair the damaged posterior tibial tendon. Lateral column lengthening, In this procedure, the surgeon places a small wedge-shaped piece of bone into the outside of the calcaneus. This helps realign the bones and recreates the arch. Arthrodesis. This procedure welds (fuses) one or more bones together, eliminating movement in the joint. This stabilizes the hindfoot and prevents the condition from progressing further.