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DRANNIE

Achilles Rupture Fallacies

Overview

Achilles Tendinitis

The Achilles' tendon is located in the leg just behind and above the heel. As the connection between the heel and calf muscle, its function is to allow the bending of the foot downwards. Generally if there is a tear to the Achilles' tendon it will be known as a rupture. This can be a partial tear or a complete tear, although partial tears are much rarer.



Causes

Inflammation/strain of the tendon is usually caused by overuse, for example, frequent jumping in volleyball, netball or basketball. It is often also caused by a sudden increase in certain types of training, such as hill sprinting or track running, particularly when running in spikes. Tendinopathy can also be associated with ageing. Our ability to regenerate damaged tissue decreases as we age and the quality of the tendon deteriorates. However, the better news is that sensible training can actually strengthen all our soft tissue (tendons, ligaments and muscle). Tightness in the calf muscles will demand greater flexibility of the tendon, which inevitably results in overuse and injury. Biomechanically, the tightness can reduce the range of dorsiflexion (toe up position) in the ankle, which increases the amount and duration of pronation. This problem is known as overpronation.* This reduces the ability of the foot to become a rigid lever at push off and places more lateral and linear forces through the tendon. This imbalance can translate into altered rotation of the tibia (shin bone) at the knee joint and, in turn, produce compensatory rotation at the hip joint with subsequent injuries to the shin, knee and hip. Pronation is part of the natural movement of the subtalar joint in the foot. It allows ?eversion? (turning the sole outwards), dorsiflexion and abduction (pointing the toes out to the side). Pronation is a normal part of the gait cycle, when walking and running, and it helps to provide shock absorption in the foot. When pronation is excessive, the foot has a tendency to roll inward more than normally acceptable. One sign of overpronation is greater wear on the inside of your running shoes than on the midsole. Lack of stability around the ankle joint can also be a contributory factor, as recurrent ankle sprains appear to be associated with a high incidence of Achilles tendonopathy. Wearing shoes that don?t fit or support the foot properly can be a major contributing cause of Achilles tendon injury.



Symptoms

When the Achilles tendon ruptures a loud bang or popping sound may be heard. The person may feel that they have been hit or kicked in the back of the lower leg and often they will look over their shoulder to see who or what has hit them. This is quickly followed by the sudden onset of sharp pain in the tendon and a loss of strength and function. If a complete rupture has occurred it may not be possible to lift the heel off the ground or point the toes. Often the degree of pain experienced, or lack of it, can be inversely proportional to the extent of the injury, ie a partial rupture may in fact be more painful than a complete rupture.



Diagnosis

When Achilles tendon injury is suspected, the entire lower lag is examined for swelling, bruising, and tenderness. If there is a full rupture, a gap in the tendon may be noted. Patients will not be able to stand on the toes if there is a complete Achilles tendon rupture. Several tests can be performed to look for Achilles tendon rupture. One of the most widely used tests is called the Thompson test. The patient is asked to lie down on the stomach and the examiner squeezes the calf area. In normal people, this leads to flexion of the foot. With Achilles tendon injury, this movement is not seen.



Non Surgical Treatment

Your doctor may advise you to rest your leg and keep the tendon immobile in a plaster cast while it heals. Or you may need to have an operation to treat an Achilles tendon rupture. The treatment you have will depend on your individual circumstances, such as your age, general health and how active you are. It will also depend on whether you have partially or completely torn your tendon. If you have a partial tear, it might get better without any treatment. Ask your doctor for advice on the best treatment for you. If you need pain relief, you can take over-the-counter painkillers such as paracetamol or ibuprofen. Always read the patient information that comes with your medicine and if you have any questions, ask your pharmacist for advice.

Achilles Tendon



Surgical Treatment

Operative treatment involves a 6cm incision along the inner side of the tendon. The torn ends are then strongly stitched together with the correct tension. After the operation a below knee half cast is applied for 2 weeks. At 2 weeks a brace will be applied that will allow you to move the foot and fully weight-bear for a further 6 weeks. After this you will need physiotherapy. Surgery carries the general risks of any operation but the risk of re-rupture is greatly reduced to 2%. The best form of treatment is controversial with good results being obtained by both methods but surgery is generally recommended for patients under 60 years of age who are fit and active with an intra-substance tear.

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