Overview
Achilles tendinitis is a common condition that causes pain on the back of the leg near the heel. The achilles tendon is the largest tendon in the body connecting your calf muscles to your heel bone. Your achilles tendon is used when you walk, run or jump. It is made to withstand a high amount of stress from these activities, but when it is overused, you can develop tendinitis. Tendinitis is defined as inflammation of a tendon. When you are injured, your body’s natural response causes inflammation. You may experience pain, swelling, or tenderness at the injured site. There are two types of achilles tendinitis, insertional and non-insertional achilles tendinitis.
Causes
Over-pronation, injury and overstresses of the tendon are some of the most common causes. Risk factors include tight heel cords, poor foot alignment, and recent changes in activities or shoes. During a normal gait cycle, the upper and lower leg rotate in unison (i.e. internally during pronation and externally during supination). However, when a person over-pronates, the lower leg is locked into the foot and therefore continues to rotate internally past the end of the contact phase while the femur begins to rotate externally at the beginning of midstance. The Gastrocnemius muscle is attached to the upper leg and rotates externally while the Soleus muscle is attached to the lower leg and rotates internally during pronation. The resulting counter rotation of the upper and lower leg causes a shearing force to occur in the Achilles tendon. This counter rotation twists the tendon at its weakest area, namely the Achilles tendon itself, and causes the inflammation. Since the tendon is avascular, once inflammation sets in, it tends to be chronic.
Symptoms
A symptom is something the patient feels and reports, while a sign is something other people, such as a doctor, detect. For example, pain is a symptom, while a rash is a sign. The most typical symptom of Achilles tendinitis is a gradual buildup of pain that deteriorates with time. With Achilles tendinitis, the Achilles tendon may feel sore a few centimeters above where it meets the heel bone. Other possible signs and symptoms of Achilles tendinitis are, the Achilles tendon feels sore a few centimeters above where it meets the heel bone, lower leg feels stiff or lower leg feels slow and weak. Slight pain in the back of the leg that appears after running or exercising, and worsens, pain in the Achilles tendon that occurs while running or a couple of hours afterwards. Greater pain experienced when running fast (such as sprinting), for a long time (such as cross country), or even when climbing stairs. The Achilles tendon swells or forms a bump or the Achilles tendon creaks when touched or moved. Please note that these symptoms, and others similar can occur in other conditions, so for an accurate diagnosis, the patient would need to visit their doctor.
Diagnosis
A thorough subjective and objective examination from a physiotherapist is usually sufficient to diagnose an Achilles injury such as Achilles tendonitis. Occasionally, further investigations such as an Ultrasound, X-ray or MRI scan may be required to assist with diagnosis and assess the severity of the condition.
Nonsurgical Treatment
If caught early enough, simple physical therapy that you can do by yourself should be fine. Over the counter solutions as easy as pain medication, cold compresses, a different pair of shoes, or a new set of stretching exercises can make most of the symptoms of Achilles tendinitis disappear. Further trouble or extreme pain should be regarded as a sign that something more serious is wrong, and you should immediately consult a doctor or physician. They will look to see whether non-surgical or surgical methods are your best options, and from there you can determine what your budget is for dealing with the condition.
Surgical Treatment
Following the MRI or ultrasound scan of the Achilles tendon the extent of the degenerative change would have been defined. The two main types of operation for Achilles tendinosis are either a stripping of the outer sheath (paratenon) and longitudinal incisions into the tendon (known as a debridement) or a major excision of large portions of the tendon, the defects thus created then being reconstructed using either allograft (donor tendon, such as Wright medical graft jacket) or more commonly using a flexor hallucis longus tendon transfer. In cases of Achilles tendonosis with more minor degrees of degenerative change the areas can be stimulated to repair itself by incising the tendon, in the line of the fibres, which stimulates an ingrowth of blood vessels and results in the healing response. With severe Achilles tendonosis, occasionally a large area of painful tendon needs to be excised which then produces a defect which requires filling. This is best done by transferring the flexor hallucis longus muscle belly and tendon, which lies adjacent to the Achilles tendon. This results in a composite/double tendon after the operation, with little deficit from the transferred tendon.
Prevention
Achilles tendinitis cannot always be prevented but the following tips will help you reduce your risk. If you are new to a sport, gradually ramp up your activity level to your desired intensity and duration. If you experience pain while exercising, stop. Avoid strenuous activity that puts excessive stress on your Achilles tendon. If you have a demanding workout planned, warm up slowly and thoroughly. Always exercise in shoes that are in good condition and appropriate for your activity or sport. Be sure to stretch your calf muscles and Achilles tendon before and after working out. If you suffer from Achilles tendinitis make sure you treat it properly and promptly. If self-care techniques don?t work, don?t delay. Book a consultation with a foot care expert or you may find yourself sidelined from your favourite sports and activities.
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