The Achilles is a large tendon that connects two major calf muscles to the back of the heel bone. If this tendon is overworked and tightens, the collagen fibres of the tendon may break, causing inflammation and pain. This can result in scar tissue formation, a type of tissue that does not have the flexibility of tendon tissue. Four types of Achilles injuries exist, 1) Paratendonitis – involves a crackly or crepitus feeling in the tissues surrounding the Achilles tendon. 2) Proliferative Tendinitis – the Achilles tendon thickens as a result of high tension placed on it. 3) Degenerative Tendinitis – a chronic condition where the Achilles tendon is permanently damaged and does not regain its structure. 4) Enthesis – an inflammation at the point where the Achilles tendon inserts into the heel bone.
The Achilles tendon is a strong band of connective tissue that attaches the calf muscle to the heel bone. When the muscle contracts, the tendon transmits the power of this contraction to the heel, producing movement. The Achilles tendon moves through a protective sheath and is made up of thousands of tiny fibres. It is thought that Achilles tendonitis develops when overuse of the tendon causes the tiny fibres that make up the tendon to tear. This causes inflammation, pain and swelling. As the tendon swells it can begin to rub against the sheath surrounding it, irritating the sheath and causing it too to become inflamed and swollen. It has a poor blood supply, which can make it susceptible to injury and can make recovery from injury slow. Factors that can lead to the development of Achilles tendonitis include, tight or weak calf muscles, rapidly increasing the amount or intensity of exercise. Hill climbing or stair climbing exercises. Changes in footwear, particularly changing from wearing high-heeled shoes to wearing flat shoes. Wearing inadequate or inappropriate shoes for the sporting activity being undertaken. Not adequately warming up and stretching prior to exercise. A sudden sharp movement that causes the calf muscles to contract and the stress on the Achilles tendon to be increased. This can cause the tendon fibres to tear.
Achilles tendonitis is an injury that occurs when your Achilles tendon — the large band of tissues connecting the muscles in the back of your lower leg to your heel bone — becomes inflamed or irritated. The signs and symptoms of Achilles tendonitis often develop gradually. You’ll feel pain and stiffness in your Achilles, especially when you first get out of bed. The pain lessens as you warm up, and may even disappear as you continue running. Once you stop, the pain returns and may feel even worse. You may also notice a crackling or creaking sound when you touch or move your Achilles tendon.
Physicians usually pinch your Achilles tendon with their fingers to test for swelling and pain. If the tendon itself is inflamed, your physician may be able to feel warmth and swelling around the tissue, or, in chronic cases, lumps of scar tissue. You will probably be asked to walk around the exam room so your physician can examine your stride. To check for complete rupture of the tendon, your physician may perform the Thompson test. Your physician squeezes your calf; if your Achilles is not torn, the foot will point downward. If your Achilles is torn, the foot will remain in the same position. Should your physician require a closer look, these imaging tests may be performed. X-rays taken from different angles may be used to rule out other problems, such as ankle fractures. MRI (magnetic resonance imaging) uses magnetic waves to create pictures of your ankle that let physicians more clearly look at the tendons surrounding your ankle joint.
If caught early enough, simple physical therapy that you can do by yourself should be fine. Over the counter solutions as easy as pain medication, cold compresses, a different pair of shoes, or a new set of stretching exercises can make most of the symptoms of Achilles tendinitis disappear. Further trouble or extreme pain should be regarded as a sign that something more serious is wrong, and you should immediately consult a doctor or physician. They will look to see whether non-surgical or surgical methods are your best options, and from there you can determine what your budget is for dealing with the condition.
Surgery for an acute Achilles tendon tear is seemingly straightforward. The ends of the torn tendon are surgically exposed and sutures are used to tie the ends together. The sutures used to tie together the torn tendon ends are thick and strong, and are woven into the Achilles both above and below the tear. While the concepts of surgery are straightforward, the execution is more complex. Care must be taken to ensure the tendon is repaired with the proper tension — not too tight or too loose. The skin must be taken care of, as excessive handling of the soft tissues can cause severe problems including infection and skin necrosis. Nerves are located just adjacent to the tendon, and must be protected to prevent nerve injury. If surgery is decided upon, it is usually performed within days or weeks of the injury. The idea is to perform the repair before scar tissue has formed, which would make the repair more difficult. Some surgeons may recommend delaying surgery a few days from the initial injury to allow swelling to subside before proceeding with the repair.
Warm up slowly by running at least one minute per mile slower than your usual pace for the first mile. Running backwards during your first mile is also a very effective way to warm up the Achilles, because doing so produces a gentle eccentric load that acts to strengthen the tendon. Runners should also avoid making sudden changes in mileage, and they should be particularly careful when wearing racing flats, as these shoes produce very rapid rates of pronation that increase the risk of Achilles tendon injury. If you have a tendency to be stiff, spend extra time stretching. If you?re overly flexible, perform eccentric load exercises preventively. Lastly, it is always important to control biomechanical alignment issues, either with proper running shoes and if necessary, stock or custom orthotics.