Plantar
fasciitis:Plantar fasciitis causes pain under your heel. It usually goes in time.
Treatment may speed up recovery. Treatment includes rest, good footwear, heel
pads, painkillers, and exercises. A steroid injection or other treatments may
be used in more severe cases.
What is plantar fasciitis?
Plantar fasciitis means inflammation of your plantar fascia. Your plantar
fascia is a strong band of tissue (like a ligament) that stretches from your
heel to your middle foot bones. It supports the arch of your foot and also acts
as a shock-absorber in your foot.
What causes plantar fasciitis?
Repeated small injuries to the fascia (with or without inflammation) are thought to be the cause of plantar fasciitis. The injury is usually near to where the plantar fascia attaches to your heel bone.
You are more likely to injure your plantar fascia in certain situations. For example:
- If you are on your feet for a lot of the time, or if you do lots of walking, running, standing, etc, when you are not used to it. (The condition is sometimes called 'policeman's heel', as policemen 'walking the beat' were said to be commonly affected.) Also, people with a sedentary lifestyle are more prone to plantar fasciitis.
- If you have recently started exercising on a different surface - for example, running on the road instead of a track.
- If you have been wearing shoes with poor cushioning or poor arch support.
- If you are overweight - this will put extra strain on your heel.
- If there is overuse or sudden stretching of your sole. For example: athletes who increase running intensity or distance; poor technique starting 'off the blocks', etc.
- If you have a tight Achilles tendon (the big tendon at the bottom of your calf muscles above your heel). This can affect your ability to flex your ankle and make you more likely to damage your plantar fascia.
Often there is no apparent cause for plantar fasciitis, particularly in older people. A common wrong belief is that the pain is due to a bony growth or 'spur' coming from the heel bone (calcaneum). Many people have a bony spur of the heel bone but not everyone with this gets plantar fasciitis.
How common is plantar fasciitis?
Plantar fasciitis is common. Around 1 in 10 people will get plantar fasciitis at some time in their life. It is most common in people between the ages of 40 to 60 years. However, it can occur at any age. It is twice as common in women as it is in men. It is also common in athletes.
What are the symptoms of plantar fasciitis?
Pain is the main symptom. This can be anywhere on the underside of your
heel. However, commonly, one spot is found as the main source of pain. This is
often about 4 cm forward from your heel, and may be tender to touch.The pain is often worst when you take your first steps on getting up in the
morning, or after long periods of rest where no weight is placed on your foot.
Gentle exercise may ease things a little as the day goes by, but a long walk or
being on your feet for a long time often makes the pain worse. Resting your
foot usually eases the pain.Sudden stretching of the sole of your foot may make the pain worse - for
example, walking up stairs or on tiptoes. You may limp because of pain. Some
people have plantar fasciitis in both feet at the same time.
How is plantar fasciitis diagnosed?
Your doctor can usually diagnose plantar fasciitis just by talking to you
and examining your feet. Rarely, tests are needed if the diagnosis is uncertain
or to rule out other possible causes of heel pain. These can include X-rays of the heel or an ultrasound scan of
the fascia. An ultrasound scan usually shows thickening and swelling of the fascia
in plantar fasciitis.
What is the initial treatment for plantar fasciitis?
Usually, the pain will ease in time.
'Fascia' tissue, like 'ligament' tissue, heals quite slowly. It may take
several months or more to go. However, the following treatments may help to
speed recovery. A combination of different treatments may help. Collectively,
these initial treatments are known as 'conservative' treatments for plantar
fasciitis.
Rest your foot
This should be done as much as
possible. Avoid running, excess walking or standing, and undue stretching of
your sole. Gentle walking and exercises described below are fine.
Footwear
Do not walk barefoot on hard
surfaces. Choose shoes with cushioned heels and a good arch support. A laced
sports shoe rather than an open sandal is probably best. Avoid old or worn
shoes that may not give a good cushion to your heel.
Heel
pads and arch supports
You can buy various pads and shoe
inserts to cushion the heel and support the arch of your foot. These work best
if you put them in your shoes at all times. The aim is to raise your heel by
about 1 cm. If your heel is tender, cut a small hole in the heel pad at the
site of the tender spot. This means that the tender part of your heel will not
touch anything inside your shoe. Place the inserts/pads in both shoes, even if
you only have pain in one foot.
Pain relief
Painkillers such as paracetamol
will often ease the pain. Sometimes anti-inflammatory medicines such as ibuprofen are useful. These are painkillers but also reduce
inflammation and may work better than ordinary painkillers. Some people find
that rubbing a cream or gel
that contains an anti-inflammatory medicine on to their heel is helpful.An ice pack (such as a bag of frozen
peas wrapped in a tea towel) held to your foot for 15-20 minutes may also help
to relieve pain.
Exercises
Regular, gentle stretching of your
Achilles tendon and plantar fascia may help to ease your symptoms. This is
because most people with plantar fasciitis have a slight tightness of their
Achilles tendon. If this is the case, it tends to pull at the back of your heel
and has a knock-on effect of keeping your plantar fascia tight. Also, when you
are asleep overnight, your plantar fascia tends to tighten up (which is why it
is usually most painful first thing in the morning). The aim of these exercises
is to loosen up the tendons and fascia gently above and below your heel. Your
doctor may refer you to a physiotherapist for exercise guidance.
The following exercises can be used
to help treat plantar fasciitis:
- Stand about 40 cm away from a wall and put both hands
on the wall at shoulder height, feet slightly apart, with one foot in
front of the other. Bend your front knee but keep your back knee straight
and lean in towards the wall to stretch. You should feel your calf muscle
tighten. Keep this position for several seconds, then relax. Do this about
10 times then switch to the other leg. Now repeat the same exercise for
both legs but this time, bring your back foot forward slightly so that
your back knee is also slightly bent. Lean against the wall as before,
keep the position, relax and then repeat 10 times before switching to the
other leg. Repeat this routine twice a day.
- Stand on the bottom step of some stairs with your legs
slightly apart and with your heels just off the end of the step. Hold the
stair rails for support. Lower your heels, keeping your knees straight.
Again you should feel the stretch in your calves. Keep the position for
20-60 seconds, then relax. Repeat six times. Try to do this exercise twice
a day.
- Sit on the floor with your legs out in front of you.
Loop a towel around the ball of one of your feet. With your knee straight,
pull your toes towards your nose. Hold the position for 30 seconds and
repeat three times. Repeat the same exercise for the other foot. Try to do
this once a day.
- Sit on a chair with your knees bent at right angles and
your feet and heels flat on the floor. Lift your foot upwards, keeping
your heel on the floor. Hold the position for a few seconds and then
relax. Repeat about 10 times. Try to do this exercise five to six times a
day.
- For this exercise you need an object such as a rolling pin or a drinks can. Whilst sitting in a chair, put the object under the arch of your foot. Roll the arch of your foot over the object in different directions. Perform this exercise for a few minutes for each foot at least twice a day.
Are
there any other treatments?
If the above treatments are not
helping to relieve your symptoms, or if you are someone such as an athlete who
needs a quick recovery, other treatments are available. There is no one
specific treatment that appears to stand out as the best.
Steroid
injections
A steroid (cortisone) injection is
sometimes tried if your pain remains bad despite the above 'conservative'
measures. It may relieve the pain in some people for several weeks but does not
always cure the problem. It is not always successful and may be sore to have
done. Steroids work by reducing inflammation. Sometimes two or three injections
are tried over a period of weeks if the first is not successful. Steroid
injections do carry some risks, including (rarely) tearing (rupture) of the
plantar fascia.
Extracorporeal
shock-wave therapy
In extracorporeal shock-wave
therapy, a machine is used to deliver high-energy sound waves through your skin
to the painful area on your foot. It is not known exactly how it works, but it
is thought that it might stimulate healing of your plantar fascia. One or more
sessions of treatment may be needed.
This procedure appears to be safe
but it is uncertain how well it works. This is mostly because of a lack of
large, well-designed clinical trials. You should have a full discussion with
your doctor about the potential benefits and risks.
In studies, most people who have had
extracorporeal shock-wave therapy have little in the way of problems. However,
possible problems that can occur include pain during treatment, skin reddening,
and swelling of your foot or bruising. Another theoretical problem could
include the condition getting worse because of rupture of your plantar fascia
or damage to the tissues in your foot. More research into extracorporeal
shock-wave therapy for plantar fasciitis is needed.
Other
treatments
Various studies and trials have been
carried out looking at other possible treatments for plantar fasciitis. Such
treatments include injection with botulinum toxin and treatment of the plantar
fascia with radiotherapy. These treatments may not be widely available.
Some people benefit from wearing a
special splint overnight to keep their Achilles tendon and plantar fascia slightly
stretched. The aim is to prevent the plantar fascia from tightening up
overnight. In very difficult cases, sometimes a plaster cast or a removable
walking brace is put on the lower leg. This provides rest, protection,
cushioning and slight stretching of the plantar fascia and Achilles tendon.
However, the evidence for the use of splint treatment of plantar fasciitis is
limited.
Surgery
This may be considered in very
difficult cases. Surgery is usually only advised if your pain has not eased
after 12 months despite other treatments. The operation involves separating
your plantar fascia from where it connects to the bone; this is called a plantar
fascia release. It may also involve removal of a spur on the calcaneum if one
is present. Surgery is not always successful. It can cause complications in
some people so it should be considered as a last resort. Complications may
include infection, increased pain, injury to nearby nerves, or rupture of the
plantar fascia.
What
is the outlook (prognosis) for plantar fasciitis?
Most people have completely
recovered from an episode of plantar fasciitis within a year. However, some of
the treatments described above may help to speed up your recovery.
Can
plantar fasciitis be prevented?
There are certain things that you
can do to try to prevent plantar fasciitis, especially if you have had it
before. These include:
- Regularly changing training shoes used for running or
walking.
- Wearing shoes with good cushioning in the heels and
good arch support.
- Losing weight if you are overweight.
- Regularly stretching the plantar fascia and Achilles
tendon, especially before exercise.
- Avoiding exercising on hard surfaces.