The Achilles tendon is a hard fibrous tissue that originates at the base of the calf muscle and inserts onto the back of the heel bone. As the calf muscle contracts during gait, the Achilles tendon creates an upward pull propelling the foot forwards onto the front of the foot for push off.
Symptom of Achilles Tendonitis
The pain associated with Achilles tendonitis can come on gradually or be caused by some type of leg or foot trauma. The pain can be a shooting, burning, or a dull ache. You can experience the pain at either the insertion point on the back of the heel or upwards on the Achilles tendon within a few inches. Swelling is also common along the area with the pain. The onset of discomfort at the insertion can cause a bump to occur called a Haglund’s deformities or Pump bump. This can be inflammation in the bursa sac that surrounds the insertion of the Achilles tendon, scar tissue from continuous tares of the tendon, or even some calcium buildup. In this situation the wearing of closed back shoes could irritate the bump. In the event of a rupture, which is rare, the foot will not be able to go through the final stage of push off causing instability. Finally, you may experience discomfort, even cramping in the calf muscle.
Cause of Achilles Tendonitis
Short of a trauma, the primary cause of Achilles tendonitis is when the calf muscle is so tight that the heel is unable to come down to the ground placing extreme stress on the Achilles tendon at the insertion. Keep in mind that the calf muscle is designed to contract up, lifting the heel bone off the ground, propelling you forwards to the front of the foot for push off. When the calf is so tight that the heel is prevented from coming down on the ground there will be stress on the tendon and the foot will over pronate causing the Achilles tendon to twist, adding to the stress on the insertion. Improper treatment may lead to a more severe injury, such as a rupture or chronic weakening, which may require surgery.
Treatment of Achilles Tendonitis
The best treatment for Achilles tendonitis is preventative, stretching and warming up properly before starting an activity. Proper rest, accompanied by stretching and icing to reduce swelling, can help to heal an overworked Achilles tendon. Placing an adequate heel lift in both shoes will allow the heel to have contact with the ground without placing stress on the Achilles tendon. Wear a tie shoe that is stiff soled and has a wide base, then add an over-the-counter or custom foot orthosis inside the shoe to prevent the twisting motion of the Achilles tendon due to over pronation. In the event that the tendon is unable to heal due to your life style or activity, you may have to be put in a walking cast for a short period to give it a chance to heal. You need to have the doctor, physical therapist, or come in to our facility to check for a leg length difference due to the walking cast being higher. This is to prevent any discomfort to the hips. After the tendon has healed and before the foot is taken out of the walking cast, range of motion at the ankle must be tested and if the foot is not allowed to properly bend upwards 15 degrees then the tightness in the calf will cause the foot to over pronate and reinjure. A stretching program will be needed to loosen up the calf muscle before much weight bearing is done without the cast. The stretching program can be found at the menu for feet hurt. If necessary a heel lift can be put in both shoes to help take the stress off the tendon. Should the tightness of the calves be the primary cause for the Achilles tendon damage and stretching has not loosen the Achilles tendon sufficiently, then discussion with your doctor for a calf release may have to be considered.