A tendon is a band of tissue that connects a muscle to a bone. The Achilles tendon runs down the back of the lower leg and connects the calf muscle to the heel bone. Also called the "heel cord," the Achilles tendon facilitates walking by helping to raise the heel off the ground. An Achilles tendon rupture is a complete or partial tear that occurs when the tendon is stretched beyond its capacity. Forceful jumping or pivoting, or sudden accelerations of running, can overstretch the tendon and cause a tear. An injury to the tendon can also result from falling or tripping. Achilles tendon ruptures are most often seen in "weekend warriors", typically, middle-aged people participating in sports in their spare time. Less commonly, illness or medications, such as steroids or certain antibiotics, may weaken the tendon and contribute to ruptures.
The cause of Achilles tendon ruptures besides obviously direct trauma, is multifactorial. In many instances the rupture occurs about 2-6 cm before its attachment to the calcaneous (heel bone). In this area there is a weaker blood supply making it more susceptible to injury and rupture. Rigid soled shoes can also be the causative factor in combination with the structure of your foot being susceptible to injury.
Symptoms of an Achilles tendon injury are as follows. Pain along the back of your foot and above your heel, especially when stretching your ankle or standing on your toes; with tendinitis, pain may be mild and worsen gradually. If you rupture the tendon, pain can be abrupt and severe. Tenderness. Swelling. Stiffness. Hearing a snapping or popping noise during the injury. Difficulty flexing your foot or pointing your toes (in complete tears of the tendon).
A detailed history, and examination by an appropriately qualified health professional, will allow a diagnosis to be made. An ultrasound or MRI scan can confirm the diagnosis. Other causes of symptoms in the area, such as those referred from the lumbar spine and local infection, should be excluded.
Non Surgical Treatment
Once a diagnosis of Achilles tendon rupture has been confirmed, a referral to an orthopaedic specialist for treatment will be recommended. Treatment for an Achilles tendon rupture aims to facilitate the torn ends of the tendon healing back together again. Treatment may be non-surgical (conservative) or surgical. Factors such as the site and extent of the rupture, the time since the rupture occurred and the preferences of the specialist and patient will be considered when deciding which treatment will be undertaken. Some cases of rupture that have not responded well to non-surgical treatment may require surgery at a later stage. The doctor will immobilise the ankle in a cast or a special hinged splint (known as a ?moon boot?) with the foot in a toes-pointed position. The cast or splint will stay in place for 6 - 8 weeks. The cast will be checked and may be changed during this time.
There are a variety of ways to repair an Achilles tendon rupture. The most common method is an open repair. This starts with an incision made on the back of the lower leg starting just above the heel bone. After the surgeon finds the two ends of the ruptured tendon, these ends are sewn together with sutures. The incision is then closed. Another repair method makes a small incision on the back of the lower leg at the site of the rupture. A series of needles with sutures attached is passed through the skin and Achilles tendon and then brought out through the small incision. The sutures are then tied together. The best surgical technique for your Achilles rupture will be determined by your orthopaedic foot and ankle surgeon.