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.
When some people stand/walk/run/jump their own anatomy in their ankle joint is not ‘sturdy’ enough to cope with the needed stabilisation of their ankle joint when they are weight bearing. So, their ankle rotates to find a point of stability. By the shin twisting in and the ankle rotating downwards to the inside (along with your body weight, the power of some muscles, and of course, gravity) a huge amount of stress is applied to the plantar fascia until it is stressed beyond it’s normal limits and it starts to ‘tighten up’. It is this tightening up of the plantar fascia under this stress that causes the damage that in turn leads to pain…eventually.
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 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
There are several things you can do to self-treat your heel or arch pain. The first thing is to wear better shoes and consider adding arch supports or custom foot orthotics to your shoes. Stretching the calf muscles can also often be helpful. Try to stretch when you first get up in the morning and before you go to bed at night. Another good exercise is to “roll” your arch and heel. This is done by placing a tennis ball, golf ball, or lacrosse ball on the floor and rolling your foot on top of it. Some people get extra benefit by “rolling” on a frozen water bottle. You should also carefully evaluate your fitness program as you may be overdoing it. You may want consider backing of new or recently added exercises or increases in training until your heel pain improves. If you work at a standing job try to take more time to walk around during the day and avoid standing in one place for too long.
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.
Being overweight can place excess pressure and strain on your feet, particularly on your heels. Losing weight, and maintaining a healthy weight by combining regular exercise with a healthy, balanced diet, can be beneficial for your feet. Wearing appropriate footwear is also important. Ideally, you should wear shoes with a low to moderate heel that supports and cushions your arches and heels. Avoid wearing shoes with no heels.