Typically an overuse injury, Achilles tendinitis affects the connective tissue between the calf and the heel. When you walk, run or otherwise use your leg to push your body upward, the Achilles tendon is engaged. Using the tendon frequently and with high intensity often results in tendinitis — a swollen Achilles tendon that makes it difficult and sometimes painful to continue high-impact activities.
Achilles tendonitis is an overuse injury. Too much too soon is the common cause of overuse injuries, however other factors can contribute to developing the condition. An increase in activity, either distance, speed or a sudden change to running up hills. As a rule of thumb distance runners should increase their mileage by no more than 10% per week. A change of footwear or training surface for example suddenly running on soft sand can cause the heel to drop lower than normal making the tendon stretch further than it is used to. Weak calf muscles can tighten or go into partial spasm which again increases the strain on the achilles tendon by shortening the muscle. Running up hills – the achilles tendon has to stretch more than normal on every stride. This is fine for a while but will mean the tendon will fatigue sooner than normal. Overpronation or feet which roll in when running can place an increased strain on the achilles tendon. As the foot rolls in (flattens) the lower leg also rotates inwards which places twisting stresses on the tendon. Wearing high heels constantly shortens the tendon and calf muscles. When exercising in flat running shoes, the tendon is stretched beyond its normal range which places an abnormal strain on the tendon.
People with Achilles tendinitis may experience pain during and after exercising. Running and jumping activities become painful and difficult. Symptoms include stiffness and pain in the back of the ankle when pushing off the ball of the foot. For patients with chronic tendinitis (longer than six weeks), x-rays may reveal calcification (hardening of the tissue) in the tendon. Chronic tendinitis can result in a breakdown of the tendon, or tendinosis, which weakens the tendon and may cause a rupture.
Laboratory studies usually are not necessary in evaluating and diagnosing an Achilles tendon rupture or injury, although evaluation may help to rule out some of the other possibilities in the differential diagnosis. Imaging studies. Plain radiography: Radiographs are more useful for ruling out other injuries than for ruling in Achilles tendon ruptures. Ultrasonography: Ultrasonography of the leg and thigh can help to evaluate the possibility of deep venous thrombosis and also can be used to rule out a Baker cyst; in experienced hands, ultrasonography can identify a ruptured Achilles tendon or the signs of tendinosis. Magnetic resonance imaging (MRI): MRI can facilitate definitive diagnosis of a disrupted tendon and can be used to distinguish between paratenonitis, tendinosis, and bursitis.
Most cases are successfully treated non-surgically although this is time-consuming and frustrating for active patients. Treatment is less likely to be successful if symptoms have been present more than six months. Nonsurgical management includes nonsteroidal anti-inflammatory medications, rest, immobilization, limitation of activity, ice, contrast baths, stretching and heel lifts. If symptoms fail to resolve after two to three months, a formal physical therapy program may be of benefit. An arch support may help if there is an associated flatfoot. A cast or brace to completely rest this area may be necessary. Extracorporeal shockwave therapy and platelet-rich plasma injections? have variable reports of success. Nitroglycerin medication applied to the overlying skin may be of benefit.
Histological and biological studies on tendon healing have made it possible to envisage surgical repair using a percutaneous approach, with the following objectives, a minimal, and not very aggressive, operation, which is quick and easy and within the capabilities of all surgeons, the shortest hospitalisation period possible, above all, early and effective re-education, providing a satisfactory result both in terms of solidity and the comfort of the patient. The percutaneous tenosynthesis TENOLIG combines stability, reliability, patient comfort and lower overall social and professional costs for this type of lesion.
Your podiatrist will work with you to decrease your chances of re-developing tendinitis. He or she may create custom orthotics to help control the motion of your feet. He or she may also recommend certain stretches or exercises to increase the tendon’s elasticity and strengthen the muscles attached to the tendon. Gradually increasing your activity level with an appropriate training schedule-building up to a 5K run, for instance, instead of simply tackling the whole course the first day-can also help prevent tendinitis.