The plantar fascia is a ligament band running from your heel to the ball of your foot. This band pulls on the heel bone, raising the arch of your foot as it pushes off the ground. But if your foot moves incorrectly, the plantar fascia may become strained. The fascia may swell and its tiny fibers may begin to fray, causing plantar fasciitis.

CAUSES

Plantar fasciitis is often caused by poor foot mechanics. If your foot flattens too much, the fascia may overstretch and swell. If your foot flattens too little, the fascia may ache from being pulled too tight.

SYMPTOMS

With plantar  fasciitis, the bottom of your foot may hurt when you stand, especially first step in the morning. pain usually occurs on the inside of the foot, near the spot where your heel and arch meet. Pain may lessen after a few steps, but it comes back after rest or with prolonged movement

A heel spur is a bony outgrowth at the base of the heel bone near the plantar fascia. A spur may cause pain on the bottom of the heel when you stand. As with plantar fasciitis, the pain may decrease after standing or walking a short time. The pain you feel is not from the spur itself. Your heel hurts because the spur pinches a nerve or presses against the plantar bursa. With a bursitis (inflamed bursa) it may apply pressure to the plantar fascia