Achilles tendon ruptures may be divided into full thickness ("total") and partial thickness ruptures. Total ruptures usually occur in formerly active athletes (average age 40) who resume sport activity after having been away from it for some time. In these cases, degenerative changes have weakened the tendon so much that sudden, forceful loading of the tendon causes it to tear. To some extent, these changes in the tendon could have been prevented by regular physical activity. In most cases, the injury mechanism is a strong activation of the posterior lower leg musculature, eccentrically overloading the tendon. A typical mechanism of injury involves pushing off hard with the weight-bearing foot while the knee is extended (e.g., running uphill) or sudden, unexpected dorsal extension of the ankle with reflex contraction of the calf musculature (e.g., falling down into a hole).Causes
A rupture occurs when a patient overstretches the Achilles tendon, an act which causes it to tear partially or completely. Achilles tendon ruptures can occur during athletic play or any time the tendon is stretched in an unexpected way.
Symptoms
Symptoms of an Achilles tendon rupture include sensation that someone or something has hit the back of the calf muscle, sudden pain, pain when walking, weakness in the leg, which is particularly noticeable when trying to push off while walking and there is not sufficient strength to do so.
Diagnosis
A physician usually can make this diagnosis with a good physical examination and history. X-rays usually are not taken. A simple test of squeezing the calf muscles while lying on your stomach should indicate if the tendon is still connected (the foot should point). This test isolates the connection between the calf muscle and tendon and eliminates other tendons that may still allow weak movement. A word of caution, Achilles tendon rupture is often misdiagnosed as a strain or minor tendon injury. Swelling and the continuing ability to weakly point your toes can confuse the diagnosis. Ultrasound and MRI are tests that can assist in difficult diagnosis. Depending on the degree of injury, these tests can also assist in determining which treatment may be best.
Non Surgical Treatment
Non-surgical management traditionally was selected for minor ruptures, less active patients, and those with medical conditions that prevent them from undergoing surgery. It traditionally consisted of restriction in a plaster cast for six to eight weeks with the foot pointed downwards (to oppose the ends of the ruptured tendon). But recent studies have produced superior results with much more rapid rehabilitation in fixed or hinged boots.
Surgical Treatment
This condition should be diagnosed and treated as soon as possible, because prompt treatment probably improves recovery. You may need to be referred urgently to see a doctor in an orthopaedic department or accident and emergency department. Meanwhile, if a ruptured Achilles tendon is suspected, you should not put any weight on that foot, so do not walk on it at all. A new piece of research found that surgery and conservative treatment actually gave equally good results, when patients were also given early mobilisation treatment using a brace. If an operation is needed, there is a type of surgery called percutaneous, which uses smaller cuts than the traditional operation. This seems to reduce the risk of getting a wound infection. After surgery, a brace seems to be better than a plaster cast in terms of faster recovery and return to normal activities, a lower complication rate and patient preferences.
Prevention
To reduce your chance of developing Achilles tendon problems, follow the following tips. Stretch and strengthen calf muscles. Stretch your calf to the point at which you feel a noticeable pull but not pain. Don't bounce during a stretch. Calf-strengthening exercises can also help the muscle and tendon absorb more force and prevent injury. Vary your exercises. Alternate high-impact sports, such as running, with low-impact sports, such as walking, biking or swimming. Avoid activities that place excessive stress on your Achilles tendons, such as hill running and jumping activities. Choose running surfaces carefully. Avoid or limit running on hard or slippery surfaces. Dress properly for cold-weather training and wear well-fitting athletic shoes with proper cushioning in the heels. Increase training intensity slowly. Achilles tendon injuries commonly occur after abruptly increasing training intensity. Increase the distance, duration and frequency of your training by no more than 10 percent each week.