Achilles tendonitis is a relatively common condition characterized by tissue damage and pain in the Achilles tendon. The muscle group at the back of the lower leg is commonly called the calf. The calf comprises of 2 major muscles, one of which originates from above the knee joint (gastrocnemius), the other of which originates from below the knee joint (soleus). Both of these muscles insert into the heel bone via the Achilles tendon. During contraction of the calf, tension is placed through the Achilles tendon. When this tension is excessive due to too much repetition or high force, damage to the tendon occurs. Achilles tendonitis is a condition whereby there is damage to the tendon with subsequent degeneration and inflammation. This may occur traumatically due to a high force going through the tendon beyond what it can withstand or, more commonly, due to gradual wear and tear associated with overuse.
The calf is under a lot of strain when running: it is not only put on stretch during landing of the foot, but it also has to produce the tension needed to support body weight and absorb the shock of landing. This is what is called an ?eccentric load?. Excessive eccentric loading - either by way of a dramatic increase in mileage, or excessive hill running, or faulty running posture - could very well be the cause of a runner?s achilles tendinitis. The calf strain translates downward into the achilles tendon where it attaches to the heel, and inflammation ensues. Inflammation then causes scarring and fibrosis of tissues, which in turn inflicts pain upon stretching or use. Risk factors for Achilles tendinitis also include spending prolonged amounts of time standing or walking.
Gradual onset of pain and stiffness over the tendon, which may improve with heat or walking and worsen with strenuous activity. Tenderness of the tendon on palpation. There may also be crepitus and swelling. Pain on active movement of the ankle joint. Ultrasound or MRI may be necessary to differentiate tendonitis from a partial tendon rupture.
To diagnose the condition correctly, your doctor will ask you a few questions about the pain and swelling in your heel. You may be asked to stand on the balls of your feet while your doctor observes your range of motion and flexibility. The doctor may also touch the area directly. This allows him to pinpoint where the pain and swelling is most severe.
The initial aim of the treatment in acute cases is to reduce strain on the tendon and reduce inflammation until rehabilitation can begin. This may involve, avoiding or severely limiting activities that may aggravate the condition, such as running or uphill climbs. Using shoe inserts (orthoses) to take pressure off the tendon. Wear supportive shoes. Reducing Inflammation by icing. Taking non-steroidal anti-inflammatory drugs. Heel cups and heel lifts can be used temporarily to take pressure off the tendon, but must not be used long term as it can lead to a shortening of the calf. Calf Compression Sleeves. Placing the foot in a cast or restrictive ankle-boot to minimize movement and give the tendon time to heal. This may be recommended in severe cases and used for about eight weeks.
There are three common procedures that doctor preform in order help heal the tendinitis depending on the location of the tendinitis and amount of damage to the tendon, including: Gastrocnemius recession - With this surgery doctors lengthen the calf muscles because the tight muscles increases stress on the Achilles tendon. The procedure is typically done on people who have difficulty flexing their feet even with constant stretching. Debridement and Repair - When there is less than 50% damage in the tendon, it is possible for doctors to remove the injured parts and repair the healthy portions. This surgery is most done for patients who are suffering from bone spurs or arthritis. To repair the tendon doctors may use metal or plastic anchors to help hold the Achilles tendon in place. Patients have to wear a boot or cast for 2 weeks or more, depending and the damage done to the tendon. Debridement with Tendon Transfer - When there is more the 50% damage done to the Achilles tendon, and Achilles tendon transfer is preformed because the remain healthy tissue is not strong enough. The tendon that helps the big toe move is attached to give added strength to the damaged Achilles. After surgery, most patients don?t notice any difference when they walk or run.
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,