Overview
Achilles tendinitis is an overuse injury of the Achilles (uh-KIL-eez) tendon, the band of tissue that connects calf muscles at the back of the lower leg to your heel bone. Under too much stress, the tendon tightens and is forced to work too hard. This causes it to become inflamed (that?s Achilles tendinitis), and, over time, can produce a covering of scar tissue, which is less flexible than the tendon. If the inflamed Achilles continues to be stressed, it can tear or rupture. Achilles tendinitis most commonly occurs in runners who have suddenly increased the intensity or duration of their runs. It?s also common in middle-aged people who play sports, such as tennis or basketball, only on the weekends. Most cases of Achilles tendinitis can be treated with relatively simple, at-home care under your doctor?s supervision. Self-care strategies are usually necessary to prevent recurring episodes. More-serious cases of Achilles tendinitis can lead to tendon tears (ruptures) that may require surgical repair.
Causes
There are two large muscles in the calf. These muscles are important for walking. They create the power needed to push off with the foot or go up on the toes. The large Achilles tendon connects these muscles to the heel. Heel pain is most often due to overuse of the foot. Rarely it is caused by an injury. Tendinitis due to overuse is most common in younger people. It can occur in walkers, runners, or other athletes. Achilles tendinitis may be more likely to occur if you Suddenly increase the amount or intensity of an activity. Your calf muscles are very tight (not stretched out). You run on hard surfaces such as concrete. You run too often, you jump a lot (such as when playing basketball), you do not have shoes with proper support, your foot suddenly turns in or out. Tendinitis from arthritis is more common in middle-aged and elderly people. A bone spur or growth may form in the back of the heel bone. This may irritate the Achilles tendon and cause pain and swelling.
Symptoms
The primary symptom of Achilles tendon inflammation is pain in the back of the heel, which initially increases when exercise is begun and often lessens as exercise continues. A complete tear of the Achilles tendon typically occurs with a sudden forceful change in direction when running or playing tennis and is often accompanied by a sensation of having been struck in the back of the ankle and calf with an object such as a baseball bat.
Diagnosis
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.
Nonsurgical Treatment
Conservative management of Achilles tendinosis and paratenonitis includes the following. Physical therapy. Eccentric exercises are the cornerstone of strengthening treatment, with most patients achieving 60-90% pain relief. Orthotic therapy in Achilles tendinosis consists of the use of heel lifts. Nonsteroidal anti-inflammatory drugs (NSAIDs): Tendinosis tends to be less responsive than paratenonitis to NSAIDs. Steroid injections. Although these provide short-term relief of painful symptoms, there is concern that they can weaken the tendon, leading to rupture. Vessel sclerosis. Platelet-rich plasma injections. Nitric oxide. Shock-wave therapy. Surgery may also be used in the treatment of Achilles tendinosis and paratenonitis. In paratenonitis, fibrotic adhesions and nodules are excised, freeing up the tendon. Longitudinal tenotomies may be performed to decompress the tendon. Satisfactory results have been obtained in 75-100% of cases. In tendinosis, in addition to the above procedures, the degenerated portions of the tendon and any osteophytes are excised. Haglund?s deformity, if present, is removed. If the remaining tendon is too thin and weak, the plantaris or flexor hallucis longus tendon can be weaved through the Achilles tendon to provide more strength. The outcome is generally less favorable than it is in paratenonitis surgery.
Surgical Treatment
Most people will improve with simple measures or physiotherapy. A small number continue to have major problems which interfere with their lifestyle. In this situation an operation may be considered. If an operation is being considered, the surgeon will interview you and examine you again and may want you to have further treatment before making a decision about an operation. Before undergoing Achilles tendonitis surgery, London based patients, and those who can travel, will be advised to undergo a scan, which will reveal whether there is a problem in the tendon which can be corrected by surgery. Patients will also have the opportunity to ask any questions and raise any concerns that they may have, so that they can proceed with the treatment with peace of mind.
Prevention
The following measures can significantly reduce the risk of developing Achilles tendonitis. Adequately stretch and warm up prior to exercise. Warm down and stretch after exercise. Choose footwear carefully and use footwear appropriate to the sport being undertaken. Use orthotic devices in footwear to correctly support the foot. Exercise within fitness levels and follow a sensible exercise programme. Develop strong, flexible calf muscles.
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