An Achilles tendon rupture is when part or all of your tendon is torn. The Achilles tendon connects the calf muscle in your lower leg to your heel bone. It allows you to point your foot down and to rise on your toes. A tear is caused by an injury or increased pressure, such as during sports or a fall. The following may make your Achilles tendon weak or stiff, and more likely to tear. A past tendon tear. Lack of physical activity. Abnormal bone structure in your foot. Obesity. Older age. Medicines, such as steroids and antibiotics.
Repeated stress from a variety of causes is often the cause of Achilles tendon injury. The stress may occur from any of the following. Excessive activity or overuse. Flat feet. Poorly fitting or inadequate shoes. Inadequate warm-up or proper conditioning. Jogging or running on hard surfaces. Older recreational athlete. Previous Achilles tendon injury (tendonitis/rupture). Repeated steroid injections. Sudden changes in intensity of exercise. Use of fluoroquinolone antibiotics (especially in children). Trauma to the ankle. Tense calf muscles prior to exercise. Weak calf muscles.
A sudden and severe pain may be felt at the back of the ankle or calf, often described as "being hit by a rock or shot" or "like someone stepped onto the back of my ankle." The sound of a loud pop or snap may be reported. A gap or depression may be felt and seen in the tendon about 2 inches above the heel bone. Initial pain, swelling, and stiffness may be followed by bruising and weakness. The pain may decrease quickly, and smaller tendons may retain the ability to point the toes. Without the Achilles tendon, though, this would be very difficult. Standing on tiptoe and pushing off when walking will be impossible. A complete tear is more common than a partial tear.
Diagnosis is made by clinical history; typically people say it feels like being kicked or shot behind the ankle. Upon examination a gap may be felt just above the heel unless swelling has filled the gap and the Simmonds' test (aka Thompson test) will be positive; squeezing the calf muscles of the affected side while the patient lies prone, face down, with his feet hanging loose results in no movement (no passive plantarflexion) of the foot, while movement is expected with an intact Achilles tendon and should be observable upon manipulation of the uninvolved calf. Walking will usually be severely impaired, as the patient will be unable to step off the ground using the injured leg. The patient will also be unable to stand up on the toes of that leg, and pointing the foot downward (plantarflexion) will be impaired. Pain may be severe, and swelling is common. Sometimes an ultrasound scan may be required to clarify or confirm the diagnosis. MRI can also be used to confirm the diagnosis.
Non Surgical Treatment
Treatment of the initial injury is with use of ice, elevation, and immobilization. If suspected you should contact your podiatrist or physician. Further treatment with continued immobilization, pain medication, or anti-inflammatory medications may be advised. If casted the foot is usually placed in a plantarflexed position to decrease the stretch on the tendon. As healing progresses the cast is changed to a more dorsiflexed position at the ankle. The casting processes can be up to 8 weeks or more.
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.
Good flexibility of the calf muscles plays an essential role in the prevention of Achilles tendon injuries. It is also important to include balance and stability work as part of the training programme. This should include work for the deep-seated abdominal muscles and for the muscles that control the hip. This might at first appear odd, given the fact that the Achilles are a good distance from these areas, but developing strength and control in this area (core stability) can boost control at the knee and ankle joints. Training errors should be avoided. The volume, intensity and frequency of training should be monitored carefully, and gradually progressed, particularly when introducing new modes of training to the programme. Abrupt changes in training load are the primary cause of Achilles tendinopathy.