Achilles tendonitis is a condition of irritation and inflammation of the large tendon in the back of the ankle. Achilles tendonitis is a common injury that tends to occur in recreational athletes. Overuse of the Achilles tendon can cause inflammation that can lead to pain and swelling. Achilles tendonitis is differentiated from another common Achilles tendon condition called Achilles tendinosis. Patients with Achilles tendinosis have chronic Achilles swelling and pain as a result of degenerative, microscopic tears within the tendon.
Tendinitis typically develops after abrupt changes in activity or training level, use of poorly fit or worn footwear, or training on uneven or dense running surfaces. Overuse prior to sufficient training is generally the cause. This is due to forces 8-10 times the body weight acting on the tendon during physical activity. Achilles injuries range from inflammation to a breakdown in the tendon. Pain is generally felt low on the back of the heel due to the low vascularity and susceptibility for inflammation. Pain higher on the Achilles is generally more muscular pain and less tendonitis. If swollen spots or knots are found along the tendon, or if the tendon feels jagged, cease activity and seek professional medical care.
Paratenonitis presents in younger people. Symptoms start gradually and spontaneously. Aching and burning pain is noted especially with morning activity. It may improve slightly with initial activity, but becomes worse with further activity. It is aggravated by exercise. Over time less exercise is required to cause the pain. The Achilles tendon is often enlarged, warm and tender approximately 1 to 4 inches above its heel insertion. Sometimes friction is noted with gentle palpation of the tendon during ankle motion. Tendinosis presents similarly but typically in middle-aged people. If severe pain and limited walking ability are present, it may indicate a partial tear of the tendon.
In diagnosing Achilles tendonitis or tendonosis, the surgeon will examine the patient?s foot and ankle and evaluate the range of motion and condition of the tendon. The extent of the condition can be further assessed with x-rays or other imaging modalities.
There are many nonsurgical ways for treating both forms of tendinitis like resting, putting ice on the area and exercises. Healing of the Achilles tendon can be a slow process, because the area has poor blood supply. If the condition becomes chronic and symptoms do not improve within 6 months, surgery might be needed. Surgical treatment may be suggested if pain has not improved after six months of nonsurgical care.
Surgery is considered the last resort. It is only recommended if all other treatment options have failed after at least six months. In this situation, badly damaged portions of the tendon may be removed. If the tendon has ruptured, surgery is necessary to re-attach the tendon. Rehabilitation, including stretching and strength exercises, is started soon after the surgery. In most cases, normal activities can be resumed after about 10 weeks. Return to competitive sport for some people may be delayed for about three to six months.
A 2014 study looked at the effect of using foot orthotics on the Achilles tendon. The researchers found that running with foot orthotics resulted in a significant decrease in Achilles tendon load compared to running without orthotics. This study indicates that foot orthoses may act to reduce the incidence of chronic Achilles tendon pathologies in runners by reducing stress on the Achilles tendon1. Orthotics seem to reduce load on the Achilles tendon by reducing excessive pronation,