Overview
Flat feet are characterized by no arch in the inner foot. It can be a genetic condition or the result of improper body mechanics. Often the whole of the foot will contact the ground. A healthy foot structure supports the body’s weight from the bone structure arch; a flat foot is unable to properly support this weight, causing pressure in the ankle, knee and hip joints.
Causes
There are many different factors that can cause arch pain. A structural imbalance or an injury to the foot can often be the direct cause. However, most frequently the cause is a common condition called plantar fasciitis. The plantar fascia is a broad band of fibrous tissue located along the bottom surface of the foot that runs from the heel to the forefoot. Excessive stretching of the plantar fascia, usually due to over-pronation (flat feet), causes plantar fasciitis. The inflammation caused by the plantar fascia being stretched away from the heel often leads to pain in the heel and arch areas. The pain is often extreme in the morning when an individual first gets out of bed or after a prolonged period of rest. If this condition is left untreated and strain on the longitudinal arch continues, a bony protrusion may develop, known as a heel spur. It is important to treat the condition promptly before it worsens.
Symptoms
Intense heel pain, especially first thing in the morning and after a long day. Difficulty walking or standing for long periods without pain. Generally, the sharp pain associated with plantar fasciitis is localized to the heel, but it can spread forward along the arch of the foot and back into the Achilles tendon. While severe cases can result in chronic pain that lasts all day, the most common flare ups occur first thing in the morning, making those first steps out of bed a form of torture, and in the evening after having spent a day on your feet. Overpronation (a foot that naturally turns too far inward), high arches, and flat feet (fallen arches) can all cause similar arch pain. In these cases, however, the pain is more likely to continue throughout the day rather than being worst in the morning.
Diagnosis
Magnetic Resonance Imaging (MRI) can show tendon injury and inflammation but cannot be relied on with 100% accuracy and confidence. The technique and skill of the radiologist in properly positioning the foot with the MRI beam are critical in demonstrating the sometimes obscure findings of tendon injury around the ankle. Magnetic Resonance Imaging (MRI) is expensive and is not necessary in most cases to diagnose posterior tibial tendon injury. Ultrasound has also been used in some cases to diagnose tendon injury, but this test again is usually not required to make the initial diagnosis.
Non Surgical Treatment
You may have noticed that one common element in the conservative treatment of all types of flat feet is orthoses. Many companies now manufacture semi-custom orthotic devices that not only improve comfort, but also seek to control abnormal motion of the foot. These over-the-counter inserts, in the $25 to $50 range, are an economical treatment that may help a majority of people. Unfortunately, these semi-custom devices will not fit everyone perfectly, and those of us who differ too much from the average may respond better to custom orthotic devices. Custom inserts are prescribed by your foot and ankle specialist and are made individually from either a physical or computerized impression of your feet. The only drawback of custom orthoses is their cost, ranging anywhere from $300 to $500. Many physicians recommend trying over-the-counter inserts first (and even keep them in stock) as they may save their patients large sums of money.
Surgical Treatment
As with most surgeries, patients and physicians should consider the surgery only after other, less invasive treatments have proven unproductive. Indications for surgery include Pain. Inability to function. Failure to improve after a six-month course of specific, directed physical therapy. Failure to improve after using arch supports, orthotics, or ankle and foot bracing. Once patients are at that point, the good news is that the procedure has considerably better outcomes than more traditional flat foot surgery. In the past, surgeons would realign and fuse the three hind joints, which would cause patients to lose motion, leaving them with a significantly stiff hind foot, With these newer procedures, if the foot is still flexible, surgeons can realign it and usually restore a close-to-normal or functional range of motion in the joints.
Prevention
Maintain a healthy weight, Use insoles to support your arches, Limit how often you wear high heels, Use proper shoes, especially when exercising to evenly distribute weight through your foot.
Stretching Exercises
Gastroc stretch. Stand on the edge of a step. Rise slowly on your toes. Lower yourself slowly as far as you can until you feel a stretch in your calf. Don?t roll your foot inward or outward. Hold for 1-2 seconds. Reps:10-20 (stop before you fatigue). Soleus stretch. Same as above, but start with your knee bent so that you feel a slight stretch in your calf or achilles. Maintain the angle of your knee throughout the stretch. Bicycle stretch. Lie on your side. Keeping your top leg straight, bring your knee toward your nose until you feel a slight stretch in the hamstring. Maintaining this angle at your hip, start pretending you are pedalling a bicycle with the top leg. Make sure you feel a slight stretch each time your knee is straight. Reps: 10-30 for each leg. If you feel any pops or clicks in your hip or back, try raising the top leg a little (making the thighs further apart) to eliminate the popping. Foot Intrinsic Exercises. Assisted metatarsal head raising. Sit in a chair. Find the bumps at the ball of your foot just before your big toe and just before the little toe. These are the first (big toe) and fifth (little toe) metatarsal heads. Place your second and third fingers from one hand under the first metatarsal head, and the second and third fingers from the other hand under the fifth metatarsal head. Now lay the thumbs from each hand in a diagonal across your toes so that they form a right angle meeting at the nail of the second toe. Your hands are now in position to assist your toes. Keep your toes straight, with the toe pads on the floor. Use your fingers to help raise all the metatarsal heads (the ball of your foot). Do not let your toes curl under keep them long. Now relax. Reps 7-10 for each foot. As this exercise gets easier, let your fingers do less of the work until your toes can do the exercise unassisted. This can take up to three weeks. When your strength has improved to this point, you can progress to the following three exercises, which are best done in stocking feet on a slippery floor. Active metatarsal head raising. Stand with your weight on both feet. Raise your metatarsal heads (the ball of your foot) while keeping your toes from curling under and maintaining your heel on the ground. Relax. Reps 6-7. Do one foot at a time. If you do more reps than you are ready for, you may well develop cramping in your foot. I once had a client who thought if seven reps were good, 10 were better. For good measure, she did the 10 reps 10 times in a day, and then she was unable to walk the next day from having used a set of muscles she had never exercised before. Don?t overdo it.
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