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.
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.
Following are a few of the symptoms usually associated with an Achilles tendon rupture. Sudden, severe pain, swelling, bruising, difficulty walking. Sometimes a gap may be felt in the tendon. The most common ways an Achilles tendon rupture is diagnosed are clinical history (presenting symptoms). Thompson or Simmonds? test, positive if when squeezing the calf there is no foot movement (passive planter flextion). O?Brien?s test, needles are placed into the tendon; tendon is intact if when the foot is moved up and down, the needle hub moves in the same direction as the toes (opposite direction of the tendon) Ultrasound and MRI, because these technologies involve an added expense, they are usually employed only to confirm the diagnosis.
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
Initial treatment for sprains and strains should occur as soon as possible. Remember RICE! Rest the injured part. Pain is the body's signal to not move an injury. Ice the injury. This will limit the swelling and help with the spasm. Compress the injured area. This again, limits the swelling. Be careful not to apply a wrap so tightly that it might act as a tourniquet and cut off the blood supply. Elevate the injured part. This lets gravity help reduce the swelling by allowing fluid and blood to drain downhill to the heart. Over-the-counter pain medication is an option. Acetaminophen (Tylenol) is helpful for pain, but ibuprofen (Motrin, Advil, Nuprin) might be better, because these medications relieve both pain and inflammation. Remember to follow the guidelines on the bottle for appropriate amounts of medicine, especially for children and teens.
There are two types of surgery to repair a ruptured Achilles tendon. In open surgery, the surgeon makes a single large incision in the back of the leg. In percutaneous surgery, the surgeon makes several small incisions rather than one large incision. In both types of surgery, the surgeon sews the tendon back together through the incision(s). Surgery may be delayed for about a week after the rupture, to let the swelling go down.