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 exact cause of Achilles tendon ruptures is hard to say. It can happen suddenly, without warning, or following an Achilles tendonitis . It seems that weak calf muscles may contribute to problems. If the muscles are weak and become fatigued, they may tighten and shorten. Overuse can also be a problem by leading to muscle fatigue . The more fatigued the calf muscles are, the shorter and tighter they will become. This tightness can increase the stress on the Achilles tendon and result in a rupture. Additionally, an imbalance of strength of the anterior lower leg muscles and the posterior lower leg muscles may also put an athlete at risk for an injury to the Achilles tendon. An Achilles tendon rupture is more likely when the force on the tendon is greater than the strength of the tendon. If the foot is dorsiflexed while the lower leg moves forward and the calf muscles contract, a rupture may occur. Most ruptures happen during a forceful stretch of the tendon while the calf muscles contract. Other factors that may increase the risk of Achilles tendon rupture include. Tight calf muscles and/or Achilles tendon. Change in running surface eg: from grass to concrete. Incorrect or poor footwear. A change of footwear eg: from heeled to flat shoes. It is thought that some medical conditions, such as gout, tuberculosis and systemic lupus erythematosus, may increase the risk of Achilles tendon rupture.
Symptoms of an Achilles tendon rupture usually directly follow a traumatic event where the foot is forced in an upward position at the ankle, causing a sudden tight stretch of the Achilles tendon. There can also be a direct blow to the tendon causing a rupture. There is typically a popping feeling or even a popping sound described during the occurance of the rupture. Typically there is pain with swelling in the region. Often the patient is unable to put weight on this foot as there is too much pain.
Your caregiver will ask what you were doing at the time of your injury. You may need any of the following. A calf-squeeze test is used to check for movement. You will lie on your stomach on a table or bed with your feet hanging over the edge. Your caregiver will squeeze the lower part of each calf. If your foot or ankle do not move, the tendon is torn. An x-ray will show swelling or any broken bones. An ultrasound uses sound waves to show pictures of your tendon on a monitor. An ultrasound may show a tear in the tendon. An MRI takes pictures of your tendon to show damage. You may be given dye to help the tendon show up better. Tell the caregiver if you have ever had an allergic reaction to contrast dye. Do not enter the MRI room with anything metal. Metal can cause serious injury. Tell the caregiver if you have any metal in or on your body.
Non Surgical Treatment
You may need to wear a plaster cast, brace or boot on your lower leg for six to eight weeks to help the tendon heal. During this time, your doctor will change the cast a number of times to make sure your tendon heals in the right way. If your tendon is partially ruptured, your doctor will probably advise you to have this treatment instead of surgery. It?s also suitable for people who aren't very physically active. However, there is a greater risk that your tendon will rupture again, compared with surgery. Your doctor will advise you which treatment is best for you.
The goal of surgery is to realign the two ends of the ruptured tendon to allow healing. There are multiple techniques to accomplish this goal that will vary from surgeon to surgeon. Recovery from this injury is usually very successful with return to full function in approximately 6 months. Post operatively casting is required with the use of crutches or other means to remain non-weightbearing for 4-8 weeks. This is followed by a course of physical therapy. Partial rupture may or may not require surgical intervention depending on the extent of injury but cast immobilization is a common requirement.
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.