When ever a patient comes
into the office complaining of heel pain my first question is, “Is the pain
worse with the first few steps in the morning and when you first get up and
walk after sitting a while?” These are the classic symptoms for a condition
known as plantar fasciitis (“itis” refers to inflammation, appendicitis is
inflammation of the appendix, fasciitis is inflammation of the fascia).
The plantar fascia is a
fibrous band of tissue that connects the heel to the base of all five toes.
The plantar fascia acts like a spring and is responsible for maintaining
your arch. As you take a step, the plantar fascia permits the arch to
pronate and flatten out a bit to allow the foot to adapt to what ever terrain it happens
to be walking. At the end of the step the plantar fascia helps the foot to
supinate and become rigid again so that a forceful push-off can be
achieved.
The plantar fasca becomes
inflamed if the foot pronates or rolls over too much and stretches out the
plantar fasca too much. This causes inflammation where the plantar fascia
is attached to the heel. The plantar fasca actually pulls away from the
bone and this is what causes the pain. One way that the body protects
itself against this pulling away from the bone is to build up more bone in
that area. The resulting build-up of bone is called a bone spur. A bone
spur in-and-of-itself sounds painful but usually it is not what is causing
the pain. The pain is caused by the tearing away of the fascia from the
bone.
The body is a rapid
healer. When you go to bed or even if you just sit down for a while the
bone starts to heal in this area. However when you get up and start walking
again …ouch! You just tore away the newly repaired bone.
Most heel
pain is caused by a biomechanical problem and can be corrected with an
orthotic. However the correct orthotic requires the correct diagnosis. The
plantar fasciitis can be caused by an arch that is either too flat, an arch
that is too high or a tight Achilles tendon. The over the counter
cushioning devices are helpful to reduce the pain and may help calm things
down a bit and allow the healing to start but in order to prevent it from
returning you have to correct the problem and this requires the correct
diagnosis.