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It is proven that, as a person gets older, the plantar fascia becomes less like a rubber band and more like a rope that doesn't stretch at all. the result of this process is that the fat pad on the heel becomes thinner and can't absorb as much of the shock caused by walking.
The most common causes of plantar fasciitis are:
Physical activity overload
There is no doubt that activities such as long-distance running can place your plantar fascia under a lot of stress. Even activities such as jogging, walking or stair climbing can place too much stress on patient’s heel bone and the soft tissue attached to it.
Arthritis
Some types of arthritis can spread to surrounding tissue and cause inflammation in the tendons in the bottom of foot, which may lead to plantar fasciitis.
Diabetes
Although experts still don’t have an explanation for this, the fact is that plantar fasciitis occurs more often in people with diabetes.
Impaired foot mechanics
If a person is being flat-footed, having a high arch or even having an abnormal pattern of walking, he or she is definitely at a higher risk of developing plantar fasciitis. It can adversely affect the way weight is distributed when being on feet, adding stress to the plantar fascia.
Improper shoes
It is proven that shoes that are thin-soled and loose lack the arch support or the ability to absorb shock. If someone regularly wears shoes with high heels, Achilles tendon that is attached to your heel can contract and shorten, causing the strain on the tissue around heels.
Incidence of the condition
Plantar fasciitis accounts for about 10% of runner-related injuries and 11-15% of all foot symptoms which require professional care. It is thought to occur in 10% of the general population as well. It may present bilaterally in a third of cases. The condition occurs equally in both sexes in young people. Some studies show a peak incidence in women aged 40-60 years.