Overview The Achilles tendon is found in the back of the leg above the heel, and is the largest tendon in the body. It connects the calf muscles to the heel bone and is used when walking, running and jumping. A rupture of the tendon is a tearing and separation of the tendon fibers. When a rupture of the tendon occurs, the tendon can no longer perform its normal function. A common issue related to a tear is the inability to point your toe. Causes As with any muscle or tendon in the body, the Achilles tendon can be torn if there is a high force or stress on it. This can happen with activities which involve a forceful push off with the foot, for example, in football, running, basketball, diving, and tennis. The push off movement uses a strong contraction of the calf muscles which can stress the Achilles tendon too much. The Achilles tendon can also be damaged by injuries such as falls, if the foot is suddenly forced into an upward-pointing position, this movement stretches the tendon. Another possible injury is a deep cut at the back of the ankle, which might go into the tendon. Sometimes the Achilles tendon is weak, making it more prone to rupture. Factors that weaken the Achilles tendon are corticosteroid medication (such as prednisolone), mainly if it is used as long-term treatment rather than a short course. Corticosteroid injection near the Achilles tendon. Certain rare medical conditions, such as Cushing?s syndrome, where the body makes too much of its own corticosteroid hormones. Increasing age. Tendonitis (inflammation) of the Achilles tendon. Other medical conditions which can make the tendon more prone to rupture, for example, rheumatoid arthritis, gout and systemic lupus erythematosus (SLE) - lupus. Certain antibiotic medicines may slightly increase the risk of having an Achilles tendon rupture. These are the quinolone antibiotics such as ciprofloxacin and ofloxacin. The risk of having an Achilles tendon rupture with these antibiotics is actually very low, and mainly applies if you are also taking corticosteroid medication or are over the age of about 60. Symptoms Often the person feels a whip-like blow that is followed by weakness in the affected leg - usually he or she is not able to walk afterwards. At place where the tendon ruptured, a significant dent is palpable. Often the experienced physician can diagnose a ruptured Achilles tendon by way of clinical examination and special function tests. Imaging techniques, such as ultrasound and magnetic resonance imaging (MRI) allow for a more precise diagnosis. Diagnosis The diagnosis is usually made on the basis of symptoms, the history of the injury and a doctor?s examination. Non Surgical Treatment Non-surgical treatment of Achilles tendon rupture is usually reserved for patients who are relatively sedentary or may be at higher risk for complications with surgical intervention (due to other associated medical problems). This involves a period of immobilization, followed by range of motion and strengthening exercises; unfortunately, it is associated with a higher risk of re-rupture of the tendon, and possibly a less optimal functional outcome. Surgical Treatment Most published reports on surgical treatment fall into 3 different surgical approach categories that include the following: direct open, minimally invasive, and percutaneous. In multiple studies surgical treatment has demonstrated a lower rate of re-rupture compared to nonoperative treatment, but surgical treatment is associated with a higher rate of wound healing problems, infection, postoperative pain, adhesions, and nerve damage. Most commonly the direct open approach involves a 10- to 18-cm posteromedial incision. The minimally invasive approach has a 3- to 10-cm incision, and the percutaneous approach involves repairing the tendon through multiple small incisions. As with nonsurgical treatment there exists wide variation in the reported literature regarding postoperative treatment protocols. Multiple comparative studies have been published comparing different surgical approaches, repair methods, or postoperative treatment protocols.
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