Every time you take a step, one of your heels has to support the whole weight of your body. As you move, the load is equal to 20 times your own body weight. The load is softened by a pillow of fat under the heel and a large sinew or ligament (the fibrous tissue that joins muscle and bone together) under the sole of the foot. This sinew is called the plantar fascia and it pulls the heel bone forward (in opposition to the Achilles tendon, which pulls it backwards). If an athlete does not warm up properly or a person with a sedentary job exercises heavily during the weekends, they might overload the muscles of the calf or strain the Achilles tendon, which joins these muscles to the heel bone. When overloaded the tendon becomes tight and painfully inflamed, which places extra strain on the plantar fascia and muscles in the soles of the foot. The strained plantar fascia becomes inflamed and may even develop tiny cracks. This is known as plantar fasciitis. Every time you sit down, sleep or otherwise rest your legs, the muscles of the sole of the foot will contract in an attempt to protect the damaged sinew. The pain in the heel will then no longer be felt. But when you get up again and put weight on the foot, the foot and ankle may feel stiff (because of the inflammation) and the pain will return either at the back of the heel or on the soles of the feet. When you start to move, the plantar fascia may crack even more causing a vicious cycle of damage and pain. Inflammation at the point where the Achilles tendon (at the back of the heel) or the plantar fascia (under the heel) join the heel bone (a bone known as the Calcaneum) stimulates cells that form bone to deposit bone in this area, eventually leading to the build up of a bony prominence on the heel bone called a calcaneal spur. But it's not the spur itself that causes the pain. The spur is a sign of chronic inflammation in the connective tissues, which is the result of a prolonged overload. It should also be pointed out that heel spurs can occur on their own, without plantar fasciitis or pain, or may be linked to some types of arthritis (inflammation of the joints). And plantar fasciitis or Achilles tendonitis don't necessarily lead to spur formation.
Causes
There are many possible causes of heel pain. Most commonly it is a chronic, long-term pain that results of some type of faulty biomechanics (abnormalities in the way you walk) that place too much stress on the heel bone and the soft tissues that attach to it. Chronic pain is a common result of standing or walking too many hours in the course of a day, working on concrete, being overweight, wearing poorly-constructed shoes, having an overly-pronated foot type (where the arch collapses excessively) or the opposite--having too high an arch. Women seem to get this slightly more often than men, and while any age can be affected, it usually occurs between 30 and 50 years of age. The other type of heel pain is the sort you get from an acute injury--a bruise to the bone or soft tissue strain resulting from a strenuous activity, like walking, running, or jumping, or from some degree of trauma. While there are dozens of possible causes to heel pain, I will review some of the more common causes. Arch Pain/Plantar Fasciitis. One of those often-painful soft tissue that attaches to heel spurs at the bottom of the foot is called "plantar fascia". Fascia, located throughout the body, is a fibrous connective tissue similar to a ligament. You can see fascia as some of that white, connective tissue attaching to bones, when you pull apart meat. The "plantar" fascia in our bodies is that fascia which is seen on the bottom (or plantar portion) of the foot, extending from the heel bone to the ball of the foot. Compared to other fascia around the body, plantar fascia is very thick and very strong. It has to be strong because of the tremendous amount of force it must endure when you walk, run or jump. But while the plantar fascia is a strong structure, it can still get injured, most commonly when it is stretched beyond its normal length over long periods of time. Plantar Fascitis. When plantar fascia is injured, the condition is called "plantar fasciitis", pronounced "plan-tar fash-I-tis". (Adding "-itis" to the end of a word means that structure is inflamed.) It is sometimes known more simply as 'fasciitis'. Plantar fasciitis is the most common type of arch pain. Symptoms of plantar fasciitis may occur anywhere along the arch, but it is most common near its attachment to the heel bone.
Symptoms
Usually when a patient comes in they?ll explain that they have severe pain in the heel. It?s usually worse during the first step in the morning when they get out of bed. Many people say if they walk for a period of time, it gets a little bit better. But if they sit down and get back up, the pain will come back and it?s one of those intermittent come and go types of pain. Heel pain patients will say it feels like a toothache in the heel area or even into the arch area. A lot of times it will get better with rest and then it will just come right back. So it?s one of those nuisance type things that just never goes away. The following are common signs of heel pain and plantar fasciitis. Pain that is worse first thing in the morning. Pain that develops after heavy activity or exercise. Pain that occurs when standing up after sitting for a long period of time. Severe, toothache type of pain in the bottom of the heel.
Diagnosis
Depending on the condition, the cause of heel pain is diagnosed using a number of tests, including medical history, physical examination, including examination of joints and muscles of the foot and leg, X-rays.
Non Surgical Treatment
If the plantar fasciitis is acute, that is, a sprain of the plantar fascia then it is basically treated as a sprain, with anti-inflammatory drugs, ice, rest, possibly physical therapy. If chronic, the poor foot mechanics need be addressed. Foot mechanics are changed by use of specially moulded shoe inserts known as orthotics. Someone with plantar fasciitis needs an orthotic designed to relieve strain on the plantar fascia. Orthotics are often confused with arch supports. Arch supports, by holding up the arch can remove some of the tension from the plantar fascia. Orthotics, on the other hand, How do you strengthen your Achilles tendon? most of their work on the heel and ball of the foot repositioning the foot for maximized function. What can you do before you see the foot doctor? First, try doing your own version of deep tissue massage by rolling a frozen cola bottle or can from the heel forward into the arch. Do it gently. Do stretching but the key to good stretching is not to stretch too hard so generally avoid weight bearing (standing) stretches but sit on a soft surface like your bed and pull the foot backward on the leg as far as it will go, holding for 20 seconds and relaxing for 5 seconds. Each 25 second ?set? can be repeated 5 times and you have invested about 2 minutes in giving yourself a lot of help. Watch out for the shoes you wear. It is tempting to obtain shoes that are colorful and soft. Here is the proof that soft shoes are bad. Wrap a pillow around your foot with duct tape and walk for a block or two. You will come back with your foot hurting more because your foot sank down deeper into the soft surface, allowing the ligament to stretch more. The shoes should be stiff in the shank and flexible at the ball. Such shoes, to running buffs, are known as motion control shoes or stability shoes so going to one of the small specialty running shoes stores is a good place to start. If you don?t have a desk job, or have an industrial job see if light duty is available. A note from your doc may be all that is required in most cases and most doctors are happy to oblige.
Surgical Treatment
Surgery is a last resort in the treatment of heel pain. Physicians have developed many procedures in the last 100 years to try to cure heel pain. Most procedures that are commonly used today focus on several areas, remove the bone spur (if one is present), release the plantar fascia (plantar fasciotomy), release pressure on the small nerves in the area. Usually the procedure is done through a small incision on the inside edge of the foot, although some surgeons now perform this type of surgery using an endoscope. An endoscope is a tiny TV camera that can be inserted into a joint or under the skin to allow the surgeon to see the structures involved in the surgery. By using the endoscope, a surgeon can complete the surgery with a smaller incision and presumably less damage to normal tissues. It is unclear whether an endoscopic procedure for this condition is better than the traditional small incision. Surgery usually involves identifying the area where the plantar fascia attaches to the heel and releasing the fascia partially from the bone. If a small spur is present this is removed. The small nerves that travel under the plantar fascia are identified and released from anything that seems to be causing pressure on the nerves. This surgery can usually be done on an outpatient basis. This means you can leave the hospital the same day.
Prevention
Heel pain is commonly caused from shoes that do not fit properly. In addition, shoes need to have ample cushioning and support, particularly through the heel, ball of the foot, and arch. Shoes should also be replaced if they become too worn. One sure sign of wear and tear is overly worn areas of a shoe's insoles. If the heel or ball of the foot is particularly worn, damage could easily occur since the bottom of the foot is not getting the cushioning it needs.