Overview
The arch of the foot is a collection of bones, ligaments, tendons, and muscles that are constructed to allow your foot to bear the weight of your body safely. These tissues and bones of your arch are in constant motion as you walk and run, absorbing impacts that might otherwise injure you. The arch of your foot has its limits, however, and arch pain can be a sign that you?ve passed those limits and injured yourself. Pay close attention to any pain you are feeling in your foot. What may seem at first to be simple soreness from being on your feet all day could be a sign of a more serious stress injury or repeated motion injury. Arch pain could also be a result of a fall or impact injury, so be sure to seek proper treatment.
Causes
The arches are the primary structures of the body that absorb and return force to and from the body to the outside world when we are on our feet. When something happens to these structures, pain and injury may result. There can be many causes of arch pain. Direct force trauma, ligament sprains, muscle strains, poor biomechanical alignment,stress fractures, overuse, inflammatory arthritis or the tightness or lack of tightness of the joints in the foot may all cause pain in the arch. Injury to the plantar fascia is a common cause of arch pain. The plantar fascia is the thick, connective tissue which supports the arch on the bottom of the foot. It runs from the calcaneus (heel) forwards to the heads of the metatarsals. When the plantar fascia is damaged, the resulting inflammatory response may become a source of arch pain.
Symptoms
The primary symptom is pain or aching in the arch area. This can be accompanied by inflammation and tenderness. If the pain is caused by the plantar fascia, it is likely to be considerably more severe in the mornings due to the muscles being unused. If you notice that the twinges of pain you have are most commonly associated with or immediately after exercise, you might want to visit a good athletic shoe store to make sure you are wearing the right kind of shoe. Another cause of arch pain is plantar fasciitis. The plantar fascia is a tough tissue structure that holds the bottom part of the arch in place. The fascia often becomes inflamed and sore, usually as a result of repetitive motion (for example, very common in those who stand on their feet for work). The pain is often noticeable first thing in the morning and worse with activity.
Diagnosis
In people with flat feet, the instep of the foot comes in contact with the ground when standing. To diagnose the problem, the health care provider will ask you to stand on your toes. If an arch forms,the flat foot is called flexible. You will not need any more tests or treatment. If the arch does not form with toe-standing (called rigid flat feet), or if there is pain, other tests may be needed, including a CT scan to look at the bones in the foot. MRI scan to look at the tendons in the foot. X-ray of the foot.
Non Surgical Treatment
The treatment of a rigid flatfoot depends on its cause. Congenital vertical talus. Your doctor may suggest a trial of serial casting. The foot is placed in a cast and the cast is changed frequently to reposition the foot gradually. However, this generally has a low success rate. Most people ultimately need surgery to correct the problem. Tarsal coalition. Treatment depends on your age, extent of bone fusion and severity of symptoms. For milder cases, your doctor may recommend nonsurgical treatment with shoe inserts, wrapping of the foot with supportive straps or temporarily immobilizing the foot in a cast. For more severe cases, surgery is necessary to relieve pain and improve the flexibility of the foot. Lateral subtalar dislocation. The goal is to move the dislocated bone back into place as soon as possible. If there is no open wound, the doctor may push the bone back into proper alignment without making an incision. Anesthesia is usually given before this treatment. Once this is accomplished, a short leg cast must be worn for about four weeks to help stabilize the joint permanently. About 15% to 20% of people with lateral subtalar dislocation must be treated with surgery to reposition the dislocated bone.
Surgical Treatment
Tendon transfers: Too much pull of certain muscles and tendons is often the cause of the deformity related with a cavus foot. Moving one of these muscles or tendons may help the foot work better. In addition, patients with a cavus foot may have weakness in moving the foot up, which is sometimes called a foot drop. In these cases, a tendon from the back of the ankle may be moved to the top of the foot to help improve strength. Correcting the deformity of the foot may not be possible with soft tissue procedures alone. In these instances, one or more bone cuts (osteotomies) may be needed. Instead of a bone cut, a fusion (arthrodesis) procedure may be used. A fusion removes the joint between two bones so they grow together over time. During a fusion the bones may be held in place with plates or screws. Calcaneal osteotomy: This procedure is performed to bring the heel bone back under the leg. This is needed if correction of the deformity in the front of the foot does not also correct the back of the foot or ankle. A calcaneal osteotomy can be performed several ways and is often held in place with one or more screws. Sometimes patients have a deformity that has caused damage to the joints. In these cases, soft tissue procedures or bone cuts may not be enough, and it may be necessary to eliminate the joint. Clawed toes are a common problem with cavus foot deformity. This can be treated with tendon surgery, fusion or removal of part of the toe bones. Following surgery the toes are often temporarily held in place with pins.
Prevention
People who run regularly should replace shoes every six months, more frequently if an avid runner. Avoid running or stepping on uneven surfaces. Try to be careful on rocky terrain or hills with loose gravel. Holes, tree stumps and roots are problems if you are trail running. If you have problems with the lower legs, a dirt road is softer than asphalt, which is softer than concrete. Try to pick a good surface if possible. However, if you're racing, be sure to train on the surface you'll eventually run on. Be careful running too many hills. Running uphill is a great workout, but make sure you gradually build this up to avoid injuries. Be careful when running downhill too fast, which can often lead to more injuries than running uphills. Prevent recurrent injuries. Athletes who have experienced ankle injuries previously may benefit from using a brace or tape to prevent recurrent ankle injuries.