Posterior tibial tendon dysfunction is one of several terms to describe a painful, progressive flatfoot deformity in adults. Other terms include posterior tibial tendon insufficiency and adult acquired flatfoot. The term adult acquired flatfoot is more appropriate because it allows a broader recognition of causative factors, not only limited to the posterior tibial tendon, an event where the posterior tibial tendon looses strength and function. The adult acquired flatfoot is a progressive, symptomatic (painful) deformity resulting from gradual stretch (attenuation) of the tibialis posterior tendon as well as the ligaments that support the arch of the foot.
Often, tarsal tunnel syndrome is misdiagnosed and confused with plantar fasciitis. Tarsal tunnel syndrome is when the tibial nerve which runs through the ankle, is pinched as it passes through the flexor retinaculum, the supportive band that surrounds the ankle joint. The symptoms of tarsal tunnel syndrome are often limited to the ankle but the since the nerve passes through the entire foot it can cause arch pain. Arch pain associated with foot strain is mainly caused by a pronated foot (rolls inward) or a flat foot. These are usually not singular causes of arch pain, but in combination with other factors, arch pain may result.
The most common symptoms of plantar fasciitis include pain on the bottom of the foot near the heel, pain with the first few steps after getting out of bed in the morning, or after a long period of rest, such as after a long car ride. The pain subsides after a few minutes of walking. Greater pain after (not during) exercise or activity.
A professional therapist may use tinels test to diagnose tarsal tunnel syndrome. This involves tapping the nerve just behind the medial malleolus or bony bit of the ankle with a rubber hammer. Pain indicates a positive test. Sometimes it is initially mistaken for plantar fasciitis which also causes pain from the inside heel and throughout the arch of the foot. Neural symptoms (such as tingling or numbness) as well as the location of tenderness when touching the area should help to easily distinguish between the conditions.
Non Surgical Treatment
The adult acquired flatfoot is best treated early. There is no recommended home treatment other than the general avoidance of prolonged weightbearing in non-supportive footwear until the patient can be seen in the office of the foot and ankle specialist. In Stage I, the inflammation and tendon injury will respond to rest, protected ambulation in a cast, as well as anti-inflammatory therapy. Follow-up treatment with custom-molded foot orthoses and properly designed athletic or orthopedic footwear are critical to maintain stability of the foot and ankle after initial symptoms have been calmed. Once the tendon has been stretched, the foot will become deformed and visibly rolled into a pronated position at the ankle. Non-surgical treatment has a significantly lower chance of success. Total immobilization in a cast or Camwalker may calm down symptoms and arrest progression of the deformity in a smaller percentage of patients. Usually, long-term use of a brace known as an ankle foot orthosis is required to stop progression of the deformity without surgery.
Fallen arches may occur with deformities of the foot bones. Tarsal coalition is a congenital condition in which the bones of the foot do not separate from one another during development in the womb. A child with tarsal coalition exhibits a rigid flat foot, which can be painful, notes the patient information website eOrthopod. Surgery may prove necessary to separate the bones. Other foot and ankle conditions that cause fallen arches may also require surgery if noninvasive treatments fail to alleviate pain and restore normal function.
The best method for preventing plantar fasciitis is stretching. The plantar fascia can be stretched by grabbing the toes, pulling the foot upward and holding for 15 seconds. To stretch the calf muscles, place hands on a wall and drop affected leg back into a lunge step while keeping the heel of the back leg down. Keep the back knee straight for one stretch and then bend the knee slightly to stretch a deeper muscle in the calf. Hold stretch for 15 seconds and repeat three times.
Easy Beginner Version. Start with your bare foot on a flat surface, toes spread out. Place a penny under the ball of your foot and the end of a pen under the middle of your arch (sticking out from the inside of your foot). Activate your arch by flexing your arch muscle. You should feel the muscles on the ball of your foot pushing down on the penny, but your arch shouldn't be pushing down on the pen. These tools help you (1) avoid rolling your foot and (2) avoid pressing down with your toes (as an extra tip, you can slide a business card under your toes before doing the exercise-when you activate your arch, you should be able to slide the business card out easily with your fingers). Do your best to keep your toes relaxed. Advanced Version. Once you're ready to move on, you can try this advanced version. It builds on the above exercise to incorporate full body twisting and balance, helping you to maintain proper arches while you move. Using the same ideas from above, stand on a flat surface in your bare feet with a penny under the ball of your foot and the end of a pen under your arch. This time, stand with your back a few inches away form a wall or a door. Lift your other leg (the one without the penny or pen) and stand on one foot. Use the wall for balance, if necessary. Lift one arm and stretch it across your body until you touch the wall or door on the opposite side, maintaining a straight back. Keep your foot straight and your arch on the penny but above the pen. Your arch will want to follow the movement and roll off, but you will need to activate it to stay stable during the movement. Lift your other arm and stretch it across the opposite side of your body, still keeping your arch in place.