The Achilles tendon is the thickest and strongest tendon in the human body. It plays a very important role in most sport activities and is particularly vulnerable to overloading from repetitive running and jumping. The Achilles tendon forms a joint distal tendon for the gastrocnemius and the soleus muscles. These muscles combine to form the triceps surae muscle. Athletes who sustain Achilles tendon ruptures most frequently are those who participate in ball sports that demand rapid changes of direction and quick, reactive jumps (e.g., tennis, squash, badminton, and soccer), in addition to runners and jumpers in track and field. Sometimes a patient with a ruptured tendon has a history of long-term pain localized to the tendon, but more often the rupture occurs without warning. Such ruptures are often caused by degenerative changes in the tendon (tendinosis), usually in the segment of the tendon that has the worst blood supply. This segment extends from 2 to 6 cm proximal to the insertion of the tendon onto the calcaneus.
An Achilles tendon rupture is often caused by overstretching the tendon. This typically occurs during intense physical activity, such as running or playing basketball. Pushing off from the foot while the knee is straight, pivoting, jumping, and running are all movements that can overstretch the Achilles tendon and cause it to rupture. A rupture can also occur as the result of trauma that causes an over-stretching of the tendon, such as suddenly tripping or falling from a significant height. The Achilles tendon is particularly susceptible to injury if it is already weak. Therefore, individuals who have a history of tendinitis or tendinosis are more prone to a tendon rupture. Similarly, individuals who have arthritis and overcompensate for their joint pain by putting more stress on the Achilles tendon may also be more susceptible to an Achilles tendon rupture.
It happens suddenly, often without warning. There is often a popping sound when the tendon ruptures. The patient usually feel as if someone has kicked their heel from the rear, only to turn around to find nobody there. There is acute pain and swelling in the back of the heel due to bleeding from the tendon rupture. The patient will have difficulty walking as they cannot toe off without pain. This causes them to walk with a limp.
Your doctor will ask you about your symptoms and examine you. He or she may also ask you about your medical history. Your doctor may ask you to do a series of movements or exercises to see how well you can move your lower leg. He or she may also examine your leg, heel and ankle and may squeeze your calf muscle to check the movement of your foot. You may need to have further tests to confirm if your tendon is torn, which may include the following. An ultrasound scan. This uses sound waves to produce an image of the inside of your leg. An MRI scan. This uses magnets and radio waves to produce images of the inside of your leg.
Non Surgical Treatment
There is no definitive protocol for conservative management. Traditionally, conservative treatment involved immobilisation in a cast or boot, with initial non-weight bearing. Recently, good results have been achieved with functional bracing and early mobilisation, and it is common to be immediately weight-bearing in an orthotic. Conservative management reduces the chance of complications, such as infection. There is a risk the tendon can heal too long and more slowly.
The surgical repair of an acute or chronic rupture of the Achilles tendon typically occurs in an outpatient setting. This means the patient has surgery and goes home the same day. Numbing medicine is often placed into the leg around the nerves to help decrease pain after surgery. This is called a nerve block. Patients are then put to sleep and placed in a position that allows the surgeon access to the ruptured tendon. Repair of an acute rupture often takes somewhere between 30 minutes and one hour. Repair of a chronic rupture can take longer depending on the steps needed to fix the tendon.