The Achilles tendon runs from the calf muscles at the back of the lower leg and inserts at the back of the heel. A torn achilles can be a partial rupture or a total rupture. A total rupture is more common in men affecting them 10 times more than women. Injury typically occurs 30 to 40 minutes into a period of exercise rather than at the start of a session and nearly always happens from a sudden explosive movement or bending the foot upwards. Many patients are able to continue to function following an achilles rupture due to other muscles compensating although the injured leg will be significantly weaker. There are four key tests which can help diagnose a ruptured achilles tendon.
Common causes of an Achilles tendon rupture include the progression of or the final result of longstanding Achilles tendonitis or an overuse injury. An injury to the ankle or a direct blow to the Achilles tendon. As a result of a fall where an individual lands awkwardly or directly on the ankle. Laceration of the tendon. Weakness of the gastrocnemius or soleus muscles in people with existing Achilles tendonitis places increased stress on the tendon. Steroid use has been linked to tendon weakness. Certain systemic diseases have been associated with tendon weakness. A sudden deceleration or stopping motions that cause an acute traumatic injury of the ankle. Injection of steroids to the involved tendon or the excessive use of steroids has been known to weaken tendons and make them susceptible to rupture. Contraction of the calf muscles while the foot is dorsiflexed (pointed toward the head) and the lower leg is moving forward.
Patients who suffer an acute rupture of the Achilles tendon often report hearing a "pop" or "snap." Patients usually have severe pain the back of the lower leg near the heel. This may or may not be accompanied by swelling. Additionally, because the function of the Achilles tendon is to enable plantarflexion (bending the foot downward), patients often have difficulty walking or standing up on their toes.
Your doctor diagnoses the rupture based on symptoms, history of the injury and physical examination. Your doctor will gently squeeze the calf muscles, if the Achilles tendon is intact, there will be flexion movement of the foot, if it is ruptured, there will be no movement observed.
Non Surgical Treatment
The most widely used method of non-surgical treatment involves the use of serial casting with gradual progression from plantar flexion to neutral or using a solid removable boot with heel inserts to bring the ends of the tendon closer together. The advantage of a solid removable boot is that it allows the patient to begin early motion and is removable. Wide variability exists among surgeons in regards to the period of absolute immobilization, initiating range of motion exercises, and progression of weight bearing status.
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.