The American College of Sports and Medicine (1) estimates that the average adult takes between 5,000 and 10,000 steps per day. The brunt of this activity is borne by the bones, muscles and ligaments of the foot. Healthy feet have strong, wonderfully flexible ligaments which are designed to support standing, walking and running. Plantar Fasciitis (pronounced “plantar fash-ee-eye-tis”) is defined as inflammation of, or damage to, one of the most important ligaments in the foot – the plantar fascia. The plantar fascia ligament is located along the sole of your foot. It is made up of fibrous tissue that stretches outward from the heel bone, like a strong piece of elastic, and then branches out across the arch and through the ball area of the foot toward the toes.
Plantar fasciitis is usually not the result of a single event but more commonly the result of a history of repetitive micro trauma combined with a biomechanical deficiency of the foot. Arthritic changes and metabolic factors may also playa part in this injury but are unlikely in a young athletic population. The final cause of plantar fasciitis is “training errors.” In all likelihood the injury is the result of a combination of biomechanical deficiencies and training errors. Training errors are responsible for up to 60% of all athletic injuries (Ambrosius 1992). The most frequent training error seen with plantar fasciitis is a rapid increase in volume (miles or time run) or intensity (pace and/or decreased recovery). Training on improper surfaces, a highly crowned road, excessive track work in spiked shoes, plyometrics on hard runways or steep hill running, can compromise the plantar fascia past elastic limits. A final training error seen in athletics is with a rapid return to some preconceived fitness level. Remembering what one did “last season” while forgetting the necessity of preparatory work is part of the recipe for injury. Metabolic and arthritic changes are a less likely cause of plantar fasciitis among athletes. Bilateral foot pain may indicate a metabolic or systemic problem. The definitive diagnosis in this case is done by a professional with blood tests and possibly x-rays.
The pain associated with plantar fasciitis is typically gradual in onset and is usually located over the inner or medial aspect of the heel. Occasionally, the pain will be sudden in onset, occurring after missing a step or after jumping from a height. The pain is commonly most severe upon arising from bed in the morning, or after periods of inactivity during the day. Thus, it causes what is known as “first-step pain.” The degree of discomfort can sometimes lessen with activity during the course of the day or after “warming-up”, but can become worse if prolonged or vigorous activity is undertaken. The pain is also often noted to be more severe in bare feet or in shoes with minimal or no padding at the sole.
Diagnosis of plantar fasciitis is based on a medical history, the nature of symptoms, and the presence of localised tenderness in the heel. X-rays may be recommended to rule out other causes for the symptoms, such as bone fracture and to check for evidence of heel spurs. Blood tests may also be recommended.
Non Surgical Treatment
Many types of treatment have been used to combat plantar fasciitis, including injections, anti-inflammatory medications, orthotics, taping, manipulation, night splinting, and instrument-assisted soft-tissue manipulation (IASTM). IASTM begins with heat, followed by stretching. Stretching may be enhanced by applying ice to the plantar fascia. These stretches should be performed several times per day, with the calf in the stretched position. IASTM uses stainless-steel instruments to effectively access small areas of the foot. IASTM is believed to cause a secondary trauma to injured soft tissues as part of the healing process. Therapeutic modalities such as low-level laser, ultrasound, and electrical muscular stimulation may be effective in the reduction of pain and inflammation. Low Dye strapping or taping of the foot is an essential part of successful treatment of plantar fasciitis. Extracorporeal shock-wave therapy (ESWT) was introduced with great promise at one time. Recent studies have reported less favorable results. Some report no effect. Previous local steroid injection may actually have a negative effect on results from ESWT.
Surgery may be considered in very difficult cases. Surgery is usually only advised if your pain has not eased after 12 months despite other treatments. The operation involves separating your plantar fascia from where it connects to the bone; this is called a plantar fascia release. It may also involve removal of a spur on the calcaneum if one is present. Surgery is not always successful. It can cause complications in some people so it should be considered as a last resort. Complications may include infection, increased pain, injury to nearby nerves, or rupture of the plantar fascia.