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.
Unusual use or overuse of the lower leg muscles and Achilles tendon is usually the cause of Achilles tendinitis. Repetitive jumping, kicking, and sprinting can lead to Achilles tendinitis in both recreational and competitive athletes. Runners, dancers, and athletes over age 65 are especially at risk. Sudden increases in training or competition can also inflame your Achilles tendon. For example, adding hills, stair-climbing, or sprinting to your running workout puts extra stress on your Achilles tendon. Improper technique during training can also strain the tendon. Intense running or jumping without stretching and strengthening your lower leg muscles can put you at risk regardless of your age or fitness level. Running on tight, exhausted, or fatigued calf muscles can put added stress on your Achilles tendon, as your tendon may not be ready to quickly start a workout after a period of inactivity. Direct blows or other injuries to the ankle, foot, or lower leg may pull your Achilles tendon too far and stretch the tissue. A hard contraction of the calf muscles, such as can happen when you push for the final sprint in a race, can strain the tendon. People whose feet roll inward, a condition called overpronation, are particularly at risk. Sometimes, shoes with too much heel cushioning put extra strain on the Achilles tendon.
Achilles tendonitis may be felt as a burning pain at the beginning of activity, which gets less during activity and then worsens following activity. The tendon may feel stiff first thing in the morning or at the beginning of exercise. Achilles tendonitis usually causes pain, stiffness, and loss of strength in the affected area. The pain may get worse when you use your Achilles tendon. You may have more pain and stiffness during the night or when you get up in the morning. The area may be tender, red, warm, or swollen if there is inflammation. You may notice a crunchy sound or feeling when you use the tendon.
There is enlargement and warmth of the tendon 1 to 4 inches above its heel insertion. Pain and sometimes a scratching feeling may be created by gently squeezing the tendon between the thumb and forefinger during ankle motion. There may be weakness in push-off strength with walking. Magnetic resonance imaging (MRI) can define the extent of degeneration, the degree to which the tendon sheath is involved and the presence of other problems in this area, but the diagnosis is mostly clinical.
Treatment normally includes, A bandage, designed specifically to restrict motion of the tendon. Non-steroidal anti-inflammatory medication. Orthoses (devices to help to support the muscle and relieve stress on the tendon, such as a heel pad or shoe insert. Rest, and switching to an exercise, such as swimming, that does not stress the tendon. Stretching, massage, ultrasound and appropriate exercises to strengthen the weak muscle group in front of the leg and the upper foot flexors. In extreme cases, surgery is performed, to remove fibrous tissue and repair any tears.
For paratenonitis, a technique called brisement is an option. Local anesthetic is injected into the space between the tendon and its surrounding sheath to break up scar tissue. This can be beneficial in earlier stages of the problem 30 to 50 percent of the time, but may need to be repeated two to three times. Surgery consists of cutting out the surrounding thickened and scarred sheath. The tendon itself is also explored and any split tears within the tendon are repaired. Motion is started almost immediately to prevent repeat scarring of the tendon to the sheath and overlying soft tissue, and weight-bearing should follow as soon as pain and swelling permit, usually less than one to two weeks. Return to competitive activity takes three to six months. Since tendinosis involves changes in the substance of the tendon, brisement is of no benefit. Surgery consists of cutting out scar tissue and calcification deposits within the tendon. Abnormal tissue is excised until tissue with normal appearance appears. The tendon is then repaired with suture. In older patients or when more than 50 percent of the tendon is removed, one of the other tendons at the back of the ankle is transferred to the heel bone to assist the Achilles tendon with strength as well as provide better blood supply to this area.
So what are some of the things you can do to help prevent Achilles Tendinitis? Warm Up properly: A good warm up is essential in getting the body ready for any activity. A well structured warm up will prepare your heart, lungs, muscles, joints and your mind for strenuous activity. Balancing Exercises, Any activity that challenges your ability to balance, and keep your balance, will help what’s called proprioception, your body’s ability to know where its limbs are at any given time. Plyometric Training, Plyometric drills include jumping, skipping, bounding, and hopping type activities. These explosive types of exercises help to condition and prepare the muscles, tendons and ligaments in the lower leg and ankle joint. Footwear, Be aware of the importance of good footwear. A good pair of shoes will help to keep your ankles stable, provide adequate cushioning, and support your foot and lower leg during the running or walking motion. Cool Down properly, Just as important as warming up, a proper cool down will not only help speed recovery, but gives your body time to make the transition from exercise to rest. Rest, as most cases of Achilles tendinitis are caused by overuse, rest is probably the single biggest factor in preventing Achilles injury. Avoid over training, get plenty of rest; and prevent Achilles tendinitis.