The plantar fascia is a thick fibrous band that runs the length of the sole of the foot. The plantar fascia helps maintain the complex arch system of the foot and plays a role in one’s balance and the various phases of gait. Injury to this tissue, called plantar fasciitis, is one of the most disabling running injuries and also one of the most difficult to resolve. Plantar fasciitis represents the fourth most common injury to the lower limb and represents 8 -10% of all presenting injuries to sports clinics (Ambrosius 1992, Nike 1989). Rehabilitation can be a long and frustrating process. The use of preventative exercises and early recognition of danger signals are critical in the avoidance of this injury.
Factors which may contribute to plantar fasciitis and heel spurs include a sudden increase in daily activities, increase in weight, or a change of shoes or allowing your current shoes to wear excessively. Shoes that are too flexible in the middle of the arch or shoes that bend before the toe joints will cause an increase in tension in the plantar fascia. Make sure your shoes are not excessively worn and that they do not bend in the “middle of the arch”.
Pain tends to start gradually, often just in the heel, but it can sometimes be felt along the whole of the plantar fascia. The symptoms are initially worse in the morning and mostly after, rather than during, activity. As the condition becomes worse, the symptoms become more persistent.
Plantar fasciitis is usually diagnosed by your physiotherapist or sports doctor based on your symptoms, history and clinical examination. After confirming your plantar fasciitis they will investigate WHY you are likely to be predisposed to plantar fasciitis and develop a treatment plan to decrease your chance of future bouts. X-rays may show calcification within the plantar fascia or at its insertion into the calcaneus, which is known as a calcaneal or heel spur. Ultrasound scans and MRI are used to identify any plantar fasciitis tears, inflammation or calcification. Pathology tests (including screening for HLA B27 antigen) may identify spondyloarthritis, which can cause symptoms similar to plantar fasciitis.
Non Surgical Treatment
Over-the-counter arch supports may be useful in patients with acute plantar fasciitis and mild pes planus. The support provided by over-the-counter arch supports is highly variable and depends on the material used to make the support. In general, patients should try to find the most dense material that is soft enough to be comfortable to walk on. Over-the-counter arch supports are especially useful in the treatment of adolescents whose rapid foot growth may require a new pair of arch supports once or more per season. Custom orthotics are usually made by taking a plaster cast or an impression of the individual’s foot and then constructing an insert specifically designed to control biomechanical risk factors such as pes planus, valgus heel alignment and discrepancies in leg length. For patients with plantar fasciitis, the most common prescription is for semi-rigid, three-quarters to full-length orthotics with longitudinal arch support. Two important characteristics for successful treatment of plantar fasciitis with orthotics are the need to control over-pronation and metatarsal head motion, especially of the first metatarsal head. In one study, orthotics were cited by 27 percent of patients as the best treatment. The main disadvantage of orthotics is the cost, which may range from $75 to $300 or more and which is frequently not covered by health insurance.
Surgery is usually not needed for plantar fasciitis. About 95 out of 100 people who have plantar fasciitis are able to relieve heel pain without surgery. Your doctor may consider surgery if non-surgical treatment has not helped and heel pain is restricting your daily activities. Some doctors feel that you should try non-surgical treatment for at least 6 months before you consider surgery. The main types of surgery for plantar fasciitis are Plantar fascia release. This procedure involves cutting part of the plantar fascia ligament . This releases the tension on the ligament and relieves inflammation . Other procedures, such as removing a heel spur or stretching or loosening specific foot nerves. These surgeries are usually done in combination with plantar fascia release when there is lasting heel pain and another heel problem. Experts in the past thought that heel spurs caused plantar fasciitis. Now experts generally believe that heel spurs are the result, not the cause, of plantar fasciitis. Many people with large heel spurs never have heel pain or plantar fasciitis. So surgery to remove heel spurs is rarely done.