Vada Stohr

Overview
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.


Causes
Arch and heel pain is usually the result of faulty biomechanics (walking gait abnormalities) that place too much stress on the heel bone and the soft tissues that attach to it. This increased stress causes local inflammation and pain. The most common cause of the stress is a condition where the inside arch of the foot flattens more than it should (often known as "over-pronation"). When the arch of the foot flattens, it also gets longer, causing a stretch on the plantar fascia. In response, the heel becomes inflamed where the plantar fascia attaches.

Symptoms
Bones and ligaments work together to form joints, and bones are joined together by ligaments. Strains occur in ligaments. In the arch, there are ligaments that are located at the ends of each bone. These ligaments connect the bones to other bones on both ends and on the sides. Point tenderness and looseness of a joint are indicators of a sprain. Fractures are indicated by point tenderness that may be severe over the area of bone that is affected. There may be a distinguishable lump or gap at the site of the fracture. A rotated toe or forefoot may also be a sign of a fracture.

Diagnosis
The medical practitioner will examine how the muscles of your foot function. These tests may involve holding or moving your foot and ankle against resistance; you may also asked to stand, walk, or even run. Pain caused by movements may indicate the cause of the pain. The nerves in the foot will be tested to make sure no injury has occurred there. An x-ray, MRI, or bone scan of the foot and arch may be taken to determine if there are changes in the makeup of the bone.

Non Surgical Treatment
If it is flat feet, then you'd seek professional advice and maybe need orthotics, or arch supports to prevent the pressures and to stop the pain. One of the other reasons you can get pain in this area of the foot is plantar fasciitis. The plantar fascia is a membrane that is inside of the skin and attaches to the heel bone here. It divides into three bands that go out of the foot here: the outer band, the central band, and the medial band here. Often, from impact, you get an inflammation of that attachment to the heel bone and this can often spread up the medial band and this is another way of getting pain in that arch. Now, the way to treat that is also using arch supports but also heel cushions, better soled shoes to prevent the pressure. These things normally disappear after a year, 18 months. Plantar fasciitis is easier to treat because it's not a long term problem. If you do need arch support, something like this would be very good for both problems.


Surgical Treatment
If pain or foot damage is severe, your doctor may recommend surgery. Procedures may include the following. Fusing foot or ankle bones together (arthrodesis). Removing bones or bony growths also called spurs (excision). Cutting or changing the shape of the bone (osteotomy). Cleaning the tendons' protective coverings (synovectomy). Adding tendon from other parts of your body to tendons in your foot to help balance the "pull" of the tendons and form an arch (tendon transfer). Grafting bone to your foot to make the arch rise more naturally (lateral column lengthening).


Stretching Exercises
Achilles stretch. Stand with the ball of one foot on a stair. Reach for the step below with your heel until you feel a stretch in the arch of your foot. Hold this position for 15 to 30 seconds and then relax. Repeat 3 times. Balance and reach exercises. Stand next to a chair with your injured leg farther from the chair. The chair will provide support if you need it. Stand on the foot of your injured leg and bend your knee slightly. Try to raise the arch of this foot while keeping your big toe on the floor. Keep your foot in this position. With the hand that is farther away from the chair, reach forward in front of you by bending at the waist. Avoid bending your knee any more as you do this. Repeat this 15 times. To make the exercise more challenging, reach farther in front of you. Do 2 sets of 15. While keeping your arch raised, reach the hand that is farther away from the chair across your body toward the chair. The farther you reach, the more challenging the exercise. Do 2 sets of 15. Towel pickup. With your heel on the ground, pick up a towel with your toes. Release. Repeat 10 to 20 times. When this gets easy, add more resistance by placing a book or small weight on the towel. Resisted ankle plantar flexion. Sit with your injured leg stretched out in front of you. Loop the tubing around the ball of your foot. Hold the ends of the tubing with both hands. Gently press the ball of your foot down and point your toes, stretching the tubing. Return to the starting position. Do 2 sets of 15. Resisted ankle dorsiflexion. Tie a knot in one end of the elastic tubing and shut the knot in a door. Tie a loop in the other end of the tubing and put the foot on your injured side through the loop so that the tubing goes around the top of the foot. Sit facing the door with your injured leg straight out in front of you. Move away from the door until there is tension in the tubing. Keeping your leg straight, pull the top of your foot toward your body, stretching the tubing. Slowly return to the starting position. Do 2 sets of 15. Heel raise. Stand behind a chair or counter with both feet flat on the floor. Using the chair or counter as a support, rise up onto your toes and hold for 5 seconds. Then slowly lower yourself down without holding onto the support. (It's OK to keep holding onto the support if you need to.) When this exercise becomes less painful, try doing this exercise while you are standing on the injured leg only. Repeat 15 times. Do 2 sets of 15. Rest 30 seconds between sets.