The plantar fascia is a tough and flexible band of tissue that runs under the sole of the foot. It connects the heel bone with the bones of the foot, and acts as a kind of shock absorber to the foot. Sudden damage, or damage that occurs over many months or years, can cause tiny tears (microtears) to develop inside the tissue of the plantar fascia. This can cause the plantar fascia to thicken, resulting in heel pain. The surrounding tissue and the heel bone can also sometimes become inflamed.
It is common to see patients with Plantar Fasciitis who have been wearing shoes that are too soft and flexible. The lack of support can be stressful on the heel for those patients whoâs feet arenât particularly stable. If these ill fitting shoes are worn for long enough, the stress will lead to Heel Pain as the inflammation of the fascia persists. Footwear assessment and advice will be essential in order to get on top of the Plantar Fasciitis. It may surprise some people to learn that high heeled shoes are not the cause of Plantar Fasciitis, although they can cause tight calf muscles. High arches can lead to Plantar Fasciitis. This is due to the lack of contact under the sole of the foot. Even sports shoes which appear to have good arch support inside are often too soft and not high enough to make contact with the arch of the foot. Hence, the plantar fascia is unsupported. This can lead to Heel pain and Plantar Fasciitis. Flat feet can lead to Plantar Fasciitis. Flat feet is caused by ligament laxity and leads to foot instability. Other structures such as muscles, tendons and fascia work harder to compensate for this instability. Heel pain or Plantar Fasciitis arises when the instability is too great for these other structures to cope with. The strain on the fascia is too severe and the inflammation sets in. Over stretching can lead to Plantar Fasciitis. Certain calf stretches put the foot into a position that creates a pulling sensation through the sole of the foot. This can cause Plantar Fasciitis which can cause pain in the arch of the foot as well as Heel Pain.
A very common complaint of plantar fasciitis is pain in the bottom of the heel. Plantar fasciitis is usually worse in the morning and may improve throughout the day. By the end of the day the pain may be replaced by a dull aching that improves with rest. Most people suffering from plantar fasciitis also complain of increased heel pain after walking for a long period of time.
Plantar fasciitis is one of many conditions causing "heel pain". Some other possible causes include nerve compression either in the foot or in the back, stress fracture of the calcaneus, and loss of the fatty tissue pad under the heel. Plantar fasciitis can be distinguished from these and other conditions based on a history and examination done by a physician. It should be noted that heel spurs are often inappropriately thought to be the sole cause of heel pain. In fact, heel spurs are common and are nothing more than the bone's response to traction or pulling-type forces from the plantar fascia and other muscles in the foot where they attach to the heel bone. They are commonly present in patients without pain, and frequently absent from those who have pain. It is the rare patient who has a truly enlarged and problematic spur requiring surgery.
Non Surgical Treatment
Anti-inflammatory agents used in the treatment of plantar fasciitis include ice, NSAIDs, iontophoresis and cortisone injections. Ice is applied in the treatment of plantar fasciitis by ice massage, ice bath or in an ice pack. For ice massage, the patient freezes water in a small paper or foam cup, then rubs the ice over the painful heel using a circular motion and moderate pressure for five to 10 minutes. To use an ice bath, a shallow pan is filled with water and ice, and the heel is allowed to soak for 10 to 15 minutes. Patients should use neoprene toe covers or keep the toes out of the ice water to prevent injuries associated with exposure to the cold. Crushed ice in a plastic bag wrapped in a towel makes the best ice pack, because it can be molded to the foot and increase the contact area. A good alternative is the use of a bag of prepackaged frozen corn wrapped in a towel. Ice packs are usually used for 15 to 20 minutes. Icing is usually done after completing exercise, stretching, strengthening and after a day's work.
In cases that do not respond to any conservative treatment, surgical release of the plantar fascia may be considered. Plantar fasciotomy may be performed using open, endoscopic or radiofrequency lesioning techniques. Overall, the success rate of surgical release is 70 to 90 percent in patients with plantar fasciitis. Potential risk factors include flattening of the longitudinal arch and heel hypoesthesia as well as the potential complications associated with rupture of the plantar fascia and complications related to anesthesia.