Overview Achilles tendon rupture is an injury that affects the back of your lower leg. It most commonly occurs in people playing recreational sports. The Achilles tendon is a strong fibrous cord that connects the muscles in the back of your calf to your heel bone. If you overstretch your Achilles tendon, it can tear (rupture) completely or just partially. If your Achilles tendon ruptures, you might feel a pop or snap, followed by an immediate sharp pain in the back of your ankle and lower leg that is likely to affect your ability to walk properly. Surgery is often the best option to repair an Achilles tendon rupture. For many people, however, nonsurgical treatment works just as well. Causes Factors that may increase your risk of Achilles tendon rupture include some of the following. Age. The peak age for Achilles tendon rupture is 30 to 40. Sex. Achilles tendon rupture is up to five times more likely to occur in men than in women. Recreational sports. Achilles tendon injuries occur more often during sports that involve running, jumping, and sudden starts and stops, such as soccer, basketball and tennis. Steroid injections. Doctors sometimes inject steroids into an ankle joint to reduce pain and inflammation. However, this medication can weaken nearby tendons and has been associated with Achilles tendon ruptures. Certain antibiotics. Fluoroquinolone antibiotics, such as ciprofloxacin (Cipro) or levofloxacin (Levaquin), increase the risk of Achilles tendon rupture. Symptoms Patients often describe a feeling of being kicked or hit with a baseball bat in the back of the heel during athletic activity. They are unable to continue the activity and have an extreme loss of strength with the inability to effectively walk. On physical examination there is often a defect that can be felt in the tendon just above the heel. A diagnosis of an Achilles tendon rupture is commonly made on physical exam. An MRI may be ordered to confirm the suspicion of a tear or to determine the extent of the tear. Diagnosis In diagnosing an Achilles tendon rupture, the foot and ankle surgeon will ask questions about how and when the injury occurred and whether the patient has previously injured the tendon or experienced similar symptoms. The surgeon will examine the foot and ankle, feeling for a defect in the tendon that suggests a tear. Range of motion and muscle strength will be evaluated and compared to the uninjured foot and ankle. If the Achilles tendon is ruptured, the patient will have less strength in pushing down (as on a gas pedal) and will have difficulty rising on the toes. The diagnosis of an Achilles tendon rupture is typically straightforward and can be made through this type of examination. In some cases, however, the surgeon may order an MRI or other advanced imaging tests. Non Surgical Treatment To give the best prospects for recovery it is important to treat an Achilles' tendon rupture as soon as possible. If a complete rupture is treated early the gap between the two ends of the tendon will be minimised. This can avoid the need for an operation or tendon graft. There are two forms of treatment available for an Achilles' tendon rupture; conservative treatment and surgery. Conservative treatment will involve the affected leg being placed in a cast and series of braces with the foot pointing down to allow the two ends of the tendon to knit together naturally. Surgical Treatment While it is possible to treat an Achilles tendon rupture without surgery, this is not ideal since the maximum strength of the muscle and tendon rarely returns. The reason is the ends of the tendon are ruptured in a very irregular manner, almost like the ends of a paint brush. As soon as the tendon ruptures, the calf muscle (gastrocnemius muscle) continues to pull on the tendon and the end of the ruptured tendon pulls back into the leg, which is called retraction. Once the tendon retracts, it is never possible to get sufficient strength back without surgery, because the muscle no longer functions at the correct biomechanical length and is now stretched out. There are patients for whom surgery cannot be performed, in particular, due to existing medical conditions that may add to potential for complications following surgery. For these patients, a specially designed boot that positions the foot correctly and takes the pressure and tension off the muscle and tendon is used. Most importantly, a cast is never used because it causes permanent shrinkage (atrophy) of the calf muscle. The special boot permits pressure on the foot with walking. The boot also has a hinge to permit movement of the ankle. Many studies of Achilles tendon ruptures have shown that this movement of the foot in the boot while walking is ideal for tendon healing. If surgery is not recommended, it is essential to obtain special tests to check that the ends of the tendon are lying next to each other so that healing can occur. The best test to do this is an ultrasound and not an MRI. Prevention To reduce your chance of developing Achilles tendon problems, follow the following tips. Stretch and strengthen calf muscles. Stretch your calf to the point at which you feel a noticeable pull but not pain. Don't bounce during a stretch. Calf-strengthening exercises can also help the muscle and tendon absorb more force and prevent injury. Vary your exercises. Alternate high-impact sports, such as running, with low-impact sports, such as walking, biking or swimming. Avoid activities that place excessive stress on your Achilles tendons, such as hill running and jumping activities. Choose running surfaces carefully. Avoid or limit running on hard or slippery surfaces. Dress properly for cold-weather training and wear well-fitting athletic shoes with proper cushioning in the heels. Increase training intensity slowly. Achilles tendon injuries commonly occur after abruptly increasing training intensity. Increase the distance, duration and frequency of your training by no more than 10 percent each week.