The plantar fascia is a ligament that connects the heel to the toes on the bottom of the foot. It lies just below the skin layers as it passes over the arch of the foot. A common ailment called plantar fasciitis is the result of this ligament becomes inflamed. This can Foot anatomyhappen from injury, physical stress, or sometimes for no obvious reason. The most common point for this inflammation is where this ligament joints the heel bone. Typical symptoms are the pain on the bottom of the foot near the heel usually most intense in the mornings when arising or after a long period with little movement. The pain typically diminishes with movement. Many suffering from plantar fasciitis have heel spurs. Even though they are in the same area they are unrelated and the heel spurs do not cause the plantar fasciitis. Most times heel spurs will not cause pain and in many go undetected unless they have an x-ray for some other reason.
Repeated small injuries to the fascia (with or without inflammation) are thought to be the cause of plantar fasciitis. The injury is usually near to where the plantar fascia attaches to your heel bone. You are more likely to injure your plantar fascia in certain situations. For example, if you are on your feet for a lot of the time, or if you do lots of walking, running, standing, etc, when you are not used to it. (Plantar fasciitis may be confused with ‘Policeman’s heel’, but they are different. Policeman’s heel is plantar calcaneal bursitis – inflammation of the sack of fluid (bursa) under the heel bone. This is not as common as plantar fasciitis.) Also, people with a sedentary lifestyle are more prone to plantar fasciitis. If you have recently started exercising on a different surface, for example, running on the road instead of a track. If you have been wearing shoes with poor cushioning or poor arch support. If you are overweight this will put extra strain on your heel. If there is overuse or sudden stretching of your sole. For example, athletes who increase running intensity or distance; poor technique starting ‘off the blocks’, etc. If you have a tight Achilles tendon (the big tendon at the bottom of your calf muscles above your heel). This can affect your ability to flex your ankle and make you more likely to damage your plantar fascia. Often there is no apparent cause for plantar fasciitis, particularly in older people. A common wrong belief is that the pain is due to a bony growth or ‘spur’ coming from the heel bone (calcaneum). Many people have a bony spur of the heel bone but not everyone with this gets plantar fasciitis.
Plantar fasciitis and heel spur pain usually begins in the bottom of the heel, and frequently radiates into the arch. At times, however, the pain may be felt only in the arch. The pain is most intense when first standing, after any period of rest. Most people with this problem experience their greatest pain in the morning, with the first few steps after sleeping. After several minutes of walking, the pain usually becomes less intense and may disappear completely, only to return later with prolonged walking or standing. If a nerve is irritated due to the swollen plantar fascia, this pain may radiate into the ankle. In the early stages of Plantar Fasciitis and Heel Spurs, the pain will usually subside quickly with getting off of the foot and resting. As the disease progresses, it may take longer periods of time for the pain to subside.
Plantar fasciitis is usually diagnosed by a health care provider after consideration of a person’s presenting history, risk factors, and clinical examination. Tenderness to palpation along the inner aspect of the heel bone on the sole of the foot may be elicited during the physical examination. The foot may have limited dorsiflexion due to tightness of the calf muscles or the Achilles tendon. Dorsiflexion of the foot may elicit the pain due to stretching of the plantar fascia with this motion. Diagnostic imaging studies are not usually needed to diagnose plantar fasciitis. However, in certain cases a physician may decide imaging studies (such as X-rays, diagnostic ultrasound or MRI) are warranted to rule out other serious causes of foot pain. Bilateral heel pain or heel pain in the context of a systemic illness may indicate a need for a more in-depth diagnostic investigation. Lateral view x-rays of the ankle are the recommended first-line imaging modality to assess for other causes of heel pain such as stress fractures or bone spur development. Plantar fascia aponeurosis thickening at the heel greater than 5 millimeters as demonstrated by ultrasound is consistent with a diagnosis of plantar fasciitis. An incidental finding associated with this condition is a heel spur, a small bony calcification on the calcaneus (heel bone), which can be found in up to 50% of those with plantar fasciitis. In such cases, it is the underlying plantar fasciitis that produces the heel pain, and not the spur itself. The condition is responsible for the creation of the spur though the clinical significance of heel spurs in plantar fasciitis remains unclear.
Non Surgical Treatment
In general, plantar fasciitis is a self-limiting condition. Unfortunately, the time until resolution is often six to 18 months, which can lead to frustration for patients and physicians. Rest was cited by 25 percent of patients with plantar fasciitis in one study as the treatment that worked best. Athletes, active adults and persons whose occupations require lots of walking may not be compliant if instructed to stop all activity. Many sports medicine physicians have found that outlining a plan of “relative rest” that substitutes alternative forms of activity for activities that aggravate the symptoms will increase the chance of compliance with the treatment plan. It is equally important to correct the problems that place individuals at risk for plantar fasciitis, such as increased amount of weight-bearing activity, increased intensity of activity, hard walking/running surfaces and worn shoes. Early recognition and treatment usually lead to a shorter course of treatment as well as increased probability of success with conservative treatment measures.
More invasive procedures to treat plantar fasciitis are usually sought only after other treatment has failed to produce favorable results. Corticosteroid injections deliver medicine into the injured fascia to reduce pain. However, this treatment may weaken the plantar fascia and result in further damage. In addition, extracorporeal shock wave therapy (ESWT) is a treatment where sound waves are sent through the damaged tissue in order to stimulate the damaged tissue and encourage healing. This method is relatively new in treating plantar fasciitis and your doctor will be able to tell you if it is the right method for you. Lastly, surgery is the last option for those suffering from chronic or severe plantar fasciitis.