Achilles tendonitis is commonly seen in athletes who sustain an increase in training load, and is most often due to overuse. Tendons respond poorly to overuse, therefore healing is slow. This can leave a tendon pathologically defective, which decreases tendon strength and leaves it less able to tolerate load, thus vulnerable to further injury or tendinosis. Extrinsic factors contributing to this condition include training errors and inappropriate footwear. Intrinsic factors include inflexibility, weakness and malalignment. In other situations, there will be clinical inflammation, but objective pathologic evidence for cellular inflammation is lacking, and in these conditions the term tendinosis is more appropriate. Tendinosis is a degeneration of the tendon?s collagen in response to chronic overuse; when overuse is continued without giving the tendon time to heal and rest, such as with repetitive strain injury, tendinosis results. Even tiny movements, such as clicking a mouse, can cause tendinosis, when done repeatedly.
Like any muscle or tendon in the body, the older we get, the more likely we are to sustain an injury. So middle-aged men and women are most at risk, with a slightly higher risk factor attributed to males. Those who participate in more intense athletic activities like high impact sports (tennis, running, basketball) are most susceptible to the injury. Certain underlying medical conditions can also be a contributing factor. Diabetics are more at risk of suffering from Achilles Tendinitis, as are those who are not in great physical shape. Some antibiotics, particularly fluoroquinolones can make one more likely to suffer a strained Achilles Tendon.
Symptoms vary because you can injure various areas of the muscle-tendon complex. The pain may be an acute or chronic sharp, stabbing, piercing, shooting, burning or aching. It is often most noticeable immediately after getting out of bed in the morning, or after periods of inactivity, like sitting down for lunch. After a couple minutes of walking around, it will often then settle down somewhat, before becoming symptomatic again after excessive time standing or walking. But regardless of how the pain is perceived, Achilles tendon pain should not be left untreated due to the danger that the tendon can become weak, frayed, thickened, and eventually it may rupture.
On examination, an inflamed or partially torn Achilles tendon is tender when squeezed between the fingers. Complete tears are differentiated by sudden, severe pain and inability to walk on the extremity. A palpable defect along the course of the tendon. A positive Thompson test (while the patient lies prone on the examination table, the examiner squeezes the calf muscle; this maneuver by the examiner does not cause the normally expected plantar flexion of the foot).
Treatment depends on severity of pain. The most effective long-term treatment for Achilles tendinitis/tendinopathy is physical therapy, particularly therapy that focuses on eccentric muscle/tendon strengthening. Calf and Achilles stretching are also an important part of the treatment. In severe cases, treatment may begin with a period of rest and immobilization in order to calm down the tendon before physical therapy is initiated. Anti-inflammatories may be prescribed. Avoiding activities that aggravate the Achilles tendon will help the healing process. Improvement and resolution of symptoms can take months. Exercise might be the cause of Achilles tendonitis, but it can also help prevent it and aid in recovery. Healing will occur more quickly if there is no pressure on the injured tendon, and if the foot is at least partially immobilized.
Surgery for an Achilles tendon rupture can be done with a single large incision, which is called open surgery. Or it can be done with several small incisions. This is called percutaneous surgery. The differences in age and activity levels of people who get surgery can make it hard to know if Achilles tendon surgery is effective. The success of your surgery can depend on, your surgeon's experience. The type of surgery you have. How damaged the tendon is. How soon after rupture the surgery is done. How soon you start your rehab program after surgery. How well you follow your rehab program. Talk to your surgeon about his or her surgical experience. Ask about his or her success rate with the technique that would best treat your condition.
While it may not be possible to prevent Achilles tendinitis, you can take measures to reduce your risk. Increase your activity level gradually. If you're just beginning an exercise regimen, start slowly and gradually increase the duration and intensity of the training. Take it easy. Avoid activities that place excessive stress on your tendons, such as hill running. If you participate in a strenuous activity, warm up first by exercising at a slower pace. If you notice pain during a particular exercise, stop and rest. Choose your shoes carefully. The shoes you wear while exercising should provide adequate cushioning for your heel and should have a firm arch support to help reduce the tension in the Achilles tendon. Replace your worn-out shoes. If your shoes are in good condition but don't support your feet, try arch supports in both shoes. Stretch daily. Take the time to stretch your calf muscles and Achilles tendon in the morning, before exercise and after exercise to maintain flexibility. This is especially important to avoid a recurrence of Achilles tendinitis. Strengthen your calf muscles. Strong calf muscles enable the calf and Achilles tendon to better handle the stresses they encounter with activity and exercise. Cross-train. Alternate high-impact activities, such as running and jumping, with low-impact activities, such as cycling and swimming.