Plantar fasciitis is sometimes mixed up with a heel spur although they are not the same. A heel spur is a calcium deposit that occurs where the plantar fascia is attached to the heel bone (calcaneus). In many cases a heel spur is found on a foot with no pain or other symptoms at all. And in many painful heels there is no sign for a heel spur. Heel spur and painful heal does not necessarily go together. For many years plantar fasciitis was believed to be an inflammatory condition. It is thought now to be inaccurate because there were many cases of the disorder with no inflammatory signs observed within the fascia. The heel pain cause is now believed to be damage to the collagen fibers of the fascia. This damage, caused by stress injury, sometimes may include inflammatory cells.
Currently no single factor has been reliably identified as contributing to the development of plantar fasciitis. The two risk factors with the most support from current research. Decreased ankle dorsiflexion. Increased Body Mass Index (BMI) in non-athletic populations. These factors are related in that both lead to increased strain on the arch, both lead to increased compression on the heel. When dorsiflexion range of motion (ankle flexibility) is lacking, the body compensates by increasing movement of the arch. In this way, decreased ankle dorsiflexion influences pronation and places strain on the underside of the foot. Similarly, having a high BMI causes strain because it places a load on the foot that may be in excess of what the foot can support. As mentioned earlier, overpronation is thought to be a contributing factor, but studies on this have so far produced mixed results. The second way these factors relate to each other is in the way people stand. A lack of ankle flexibility and a high BMI can both cause increased pressure on the heel in standing. Keeping weight on the heels causes compression under the heel. But it also means the muscles and ligaments in the arch are not being used to balance your body weight. Lack of use, I suspect, is a greater danger than overuse. Looking beyond these potential contributors to heel pain though, there is one major factor that overshadows them all-the way footwear alters the normal function of the foot.
The pain is more intense with your first steps out of bed in the morning or after sitting for a while. The reason for this is that during rest our muscles and ligaments tend to shorten and tighten up. The tightening of the plantar fascia means more traction on the ligament making the tissue even more sensitive. With sudden weight-bearing the tissue is being traumatised, resulting in a stabbing pain. After walking around for a while the ligament warms up, becomes a little bit more flexible and adapts itself, making the pain go way entirely or becoming more of a dull ache. However, after walking a long distance or standing for hours the pain will come back again. To prevent the sudden sharp pain in the morning or after sitting, it is important to give the feet a little warm-up first with some simple exercises. Also, any barefoot walking should be avoided, especially first thing in the morning, as this will damage to the plantar fascia tissue. Aparty from pain in the heel or symptoms may include a mild swelling under the heel. In addition, heel pain is often associated with tightness in the calf muscles. Tight calf muscles are a major contributing factor to Plantar Fasciitis.
During the physical exam, your doctor checks for points of tenderness in your foot. The location of your pain can help determine its cause. Usually no tests are necessary. The diagnosis is made based on the history and physical examination. Occasionally your doctor may suggest an X-ray or magnetic resonance imaging (MRI) to make sure your pain isn’t being caused by another problem, such as a stress fracture or a pinched nerve. Sometimes an X-ray shows a spur of bone projecting forward from the heel bone. In the past, these bone spurs were often blamed for heel pain and removed surgically. But many people who have bone spurs on their heels have no heel pain.
Non Surgical Treatment
Sometimes physical therapy modalities are helpful. The most frequently used modalities include ultrasound (high frequency sound vibrations that create a deep heat and reduce inflammation) and galvanic electrical stimulation ( a carefully applied intermittent muscular stimulation to the heel and calf that helps reduce pain and relax muscle spasm, which is a contributing factor to the pain). This treatment has been found most effective when given twice a week. Repeated taping and padding is sometimes used. The felt pads that will be strapped to your feet will compress after a few days and must be reapplied. While wearing them they should be kept dry, but may be removed the night before your next appointment. Resistant cases of heel pain caused by plantar fasciitis, heel spurs or cases of stress fracture of the calcaneus often need to be placed in a removable below knee cast boot. It is important to be aware of how your foot feels over this time period. If your foot is still uncomfortable without the strapping, but was more comfortable while wearing it, that is an indication that the treatment should help. Remember, what took many months or years to develop can not be eliminated in just a few days.
In unusual cases, surgical intervention is necessary for relief of pain. These should only be employed after non-surgical efforts have been used without relief. Generally, such surgical procedures may be completed on an outpatient basis in less than one hour, using local anesthesia or minimal sedation administrated by a trained anesthesiologist. In such cases, the surgeon may remove or release the injured and inflamed fascia, after a small incision is made in the heel. A surgical procedure may also be undertaken to remove bone spurs, sometimes as part of the same surgery addressing the damaged tissue. A cast may be used to immobilize the foot following surgery and crutches provided in order to allow greater mobility while keeping weight off the recovering foot during healing. After removal of the cast, several weeks of physical therapy can be used to speed recovery, reduce swelling and restore flexibility.