Plantar fasciitis is an inflammation of the connective tissue which runs along the bottom of the foot. It's considered an overuse injury caused by continual overstretching of the plantar fascia. Although the exact mechanism of the injury is still debated, it is predominantly seen in runners (1) with high arches, (2) who overpronate and/or (3) who exhibit muscular imbalances of the lower leg (tight calves and/or weak shin muscles).
Because the fascia has a poor blood supply, it often becomes a slow-healing, chronic condition. In chronic cases, the injury can progress to a bone spur where the fascia attaches to the heel. While it is not the bone spur that causes the pain (a common misconception), the irritation of the fascial tissue by the spur can be quite painful.
Another method for relief involves arch supports. Arch supports (or orthotics) take stress off of the arch to relieve the pain. Studies have shown that over the counter arch supports often work as well as or better than custom orthotics. This is not to suggest that you should throw away or avoid custom orthotics, but it certainly wouldn't hurt to test an over-the-counter version before investing hundreds of dollars.
To decrease the often excruciating pain in the morning, heat the foot in a tub of hot water for 10 minutes and then roll the foot over a golf ball to massage the tissue. This will help stimulate blood flow and loosen the connective tissue, which tightens up when you sleep. Wearing Birkenstock-type sandals also relieves symptoms and provides support.
If you have access to a health professional, ultrasound therapy helps promote blood flow to the affected area and speeds the healing process. The sound waves stimulate the underlying fascia to help break up scar tissue as a result of the injury.
A more recent treatment which we have found very useful is the use of a "night splint" to keep the foot stretched out while sleeping. Similar to a ski boot but lighter, it helps minimize the morning stiffness, allowing you to walk more normally when you wake by lengthening the calves and arch while you sleep. We have also found that it speeds the healing process and helps athletes return to running more quickly without pain. Good running doctors should have these "boots" available. If they don't, look elsewhere for help.
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