Achilles Tendonitis is a term that commonly refers to an inflammation of the Achilles tendon or its covering. It is an overuse injury that is common especially to joggers and jumpers, due to the repetitive action and so may occur in other activities that requires the same repetitive action. Most experts now use the term Achilles tendinopathy to include both inflammation and micro-tears. But many doctors may still use the term tendonitis out of habit.
The Achilles tendon is a strong band of connective tissue that attaches the calf muscle to the heel bone. When the muscle contracts, the tendon transmits the power of this contraction to the heel, producing movement. The Achilles tendon moves through a protective sheath and is made up of thousands of tiny fibres. It is thought that Achilles tendonitis develops when overuse of the tendon causes the tiny fibres that make up the tendon to tear. This causes inflammation, pain and swelling. As the tendon swells it can begin to rub against the sheath surrounding it, irritating the sheath and causing it too to become inflamed and swollen. It has a poor blood supply, which can make it susceptible to injury and can make recovery from injury slow. Factors that can lead to the development of Achilles tendonitis include, tight or weak calf muscles, rapidly increasing the amount or intensity of exercise. Hill climbing or stair climbing exercises. Changes in footwear, particularly changing from wearing high-heeled shoes to wearing flat shoes. Wearing inadequate or inappropriate shoes for the sporting activity being undertaken. Not adequately warming up and stretching prior to exercise. A sudden sharp movement that causes the calf muscles to contract and the stress on the Achilles tendon to be increased. This can cause the tendon fibres to tear.
The Achilles tendon is a strong muscle and is not usually damaged by one specific injury. Tendinitis develops from repetitive stress, sudden increase or intensity of exercise activity, tight calf muscles, or a bone spur that rubs against the tendon. Common signs and symptoms of Achilles Tendinitis include, gradual onset of pain at the back of the ankle which may develop in several days up to several months to become bothersome. Heel pain during physical activities which may diminish after warming up in early stages, or become a constant problem if the problem becomes chronic. Stiffness at the back of the ankle in the morning. During inactivity, pain eases. Swelling or thickening of the Achilles tendon. Painful sensation if the Achilles tendon is palpated. If a pop is heard suddenly, then there is an increased chance that the Achilles tendon has been torn and immediate medical attention is needed.
The doctor will perform a physical exam. The doctor will look for tenderness along the tendon and pain in the area of the tendon when you stand on your toes. X-rays can help diagnose bone problems. An MRI scan may be done if your doctor is thinking about surgery or is worried about the tear in the Achilles tendon.
There are a variety of treatments for Achilles tendonitis. These range from rest and aspirin to steroid injections and surgery. Your doctor might suggest, reducing your physical activity, stretching and strengthening the calf muscles, switching to a different, less strenuous sport, icing the area after exercise or when in pain, raising your foot to decrease swelling, wearing a brace or compressive elastic bandage to prevent heel movement, undergoing physical therapy, taking anti-inflammatory medication (e.g., aspirin or ibuprofen) for a limited time, getting steroid injections, Sometimes more conservative treatments are not effective. In these cases, surgery may be necessary to repair the Achilles tendon. If the condition intensifies and is left untreated, there?s a greater risk of an Achilles rupture. This can cause sharp pain in the heel area.
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.
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,