Plantar fasciitis is a poorly understood condition. There is little consensus among medical professionals about what causes the problem, and no treatments have been reliably proven to treat it. A number of theories exists for why plantar fasciitis develops, but the ineffectiveness of conventional treatments suggests something is missing. The plantar fascia is a band of connective tissue that runs along the underside of the foot from the heel to the toes. The fascia helps maintain the integrity of the arch, provides shock absorption, and plays an important role in the normal mechanical function of the foot.
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.
Pain is the main symptom. This can be anywhere on the underside of your heel. However, commonly, one spot is found as the main source of pain. This is often about 4 cm forward from your heel, and may be tender to touch. The pain is often worst when you take your first steps on getting up in the morning, or after long periods of rest where no weight is placed on your foot. Gentle exercise may ease things a little as the day goes by, but a long walk or being on your feet for a long time often makes the pain worse. Resting your foot usually eases the pain. Sudden stretching of the sole of your foot may make the pain worse, for example, walking up stairs or on tiptoes. You may limp because of pain. Some people have plantar fasciitis in both feet at the same time.
To arrive at a diagnosis, the foot and ankle surgeon will obtain your medical history and examine your foot. Throughout this process the surgeon rules out all the possible causes for your heel pain other than plantar fasciitis. In addition, diagnostic imaging studies such as x-rays or other imaging modalities may be used to distinguish the different types of heel pain. Sometimes heel spurs are found in patients with plantar fasciitis, but these are rarely a source of pain. When they are present, the condition may be diagnosed as plantar fasciitis/heel spur syndrome.
Non Surgical Treatment
There are a number of treatments that can help relieve heel pain and speed up your recovery. These include resting your heel, try to avoid walking long distances and standing for long periods, regular stretching, stretching your calf muscles and plantar fascia, pain relief, using an icepack on the affected heel and taking painkillers, such as non-steroidal anti-inflammatory drugs (NSAIDs) wearing good-fitting shoes that support and cushion your foot, running shoes are particularly useful, using supportive devices such as orthoses (rigid supports that are put inside the shoe) or strapping. Around four out of five cases of heel pain resolve within a year. However, having heel pain for this length of time can often be frustrating and painful. In around one in 20 cases, the above treatments are not enough, and surgery may be recommended to release the plantar fascia.
The most common surgical procedure for plantar fasciitis is plantar fascia release. It involves surgical removal of a part from the plantar fascia ligament which will relieve the inflammation and reduce the tension. Plantar fascia release is either an open surgery or endoscopic surgery (insertion of special surgical instruments through small incisions). While both methods are performed under local anesthesia the open procedure may take more time to recover. Other surgical procedures can be used as well but they are rarely an option. Complications of plantar fasciitis surgery are rare but they are not impossible. All types of plantar fasciitis surgery pose a risk of infection, nerve damage, and anesthesia related complications including systemic toxicity, and persistence or worsening of heel pain.
Stretching exercises for the Achilles tendon and plantar fascia are recommend to relieve pain and aid in the healing process. Sometimes application of athletic tape is recommended. In moderate or severe cases of plantar fasciitis, your doctor may recommend you wearing a night splint, which will stretch the arch of your foot and calf while you sleep. This helps to lengthen the Achilles tendon and plantar fascia for symptom relief. Depending on the severity of your plantar fasciitis, your physician may prescribe a store-bought orthotic (arch support) or custom-fitted orthotic to help distribute your foot pressure more evenly.