Typically an overuse injury, Achilles tendinitis affects the connective tissue between the calf and the heel. When you walk, run or otherwise use your leg to push your body upward, the Achilles tendon is engaged. Using the tendon frequently and with high intensity often results in tendinitis -- a swollen Achilles tendon that makes it difficult and sometimes painful to continue high-impact activities.
The majority of Achilles tendon injuries are due to overuse injuries. Other factors that lead to Achilles tendonitis are improper shoe selection, inadequate stretching prior to engaging in athletics, a short Achilles tendon, direct trauma (injury) to the tendon, training errors and heel bone deformity. There is significant evidence that people with feet that role in excessively (over-pronate) are at greater risk for developing Achilles tendinitis. The increased pronation puts additional stress on the tendon, therefore, placing it at greater risk for injury.
Paratenonitis presents in younger people. Symptoms start gradually and spontaneously. Aching and burning pain is noted especially with morning activity. It may improve slightly with initial activity, but becomes worse with further activity. It is aggravated by exercise. Over time less exercise is required to cause the pain. The Achilles tendon is often enlarged, warm and tender approximately 1 to 4 inches above its heel insertion. Sometimes friction is noted with gentle palpation of the tendon during ankle motion. Tendinosis presents similarly but typically in middle-aged people. If severe pain and limited walking ability are present, it may indicate a partial tear of the tendon.
During an examination of the foot and ankle, you doctor will look for the following signs, Achilles tendon swelling or thickening. Bone spurs appearing at the lower part of the tendon at the back of the hell. Pain at the middle or lower area of the Achilles tendon. Limited range of motion of the foot and ankle, and a decreased ability to flex the foot. Your doctor may perform imaging tests, such as X-rays and MRI scans, to make a diagnosis of Achilles tendinitis. X-rays show images of the bones and can help the physician to determine if the Achilles tendon has become hardened, which indicated insertional Achilles tendinitis. MRI scans may not be necessary, but they are important guides if you are recommended to have surgical treatment. An MRI can show the severity of the damage and determine what kind of procedure would be best to address the condition.
Treatment will focus on relieving the pain and preventing further injury. Your podiatrist may create shoe inserts or a soft cast to effectively immobilize the affected area for a period of time. (Often, a couple of weeks are needed for the tendon to heal.) Medication can help too. Your podiatrist may recommend or prescribe oral medication.
Surgery usually isn't needed to treat Achilles tendinopathy. But in rare cases, someone might consider surgery when rubbing between the tendon and the tissue covering the tendon (tendon sheath) causes the sheath to become thick and fibrous. Surgery can be done to remove the fibrous tissue and repair any small tendon tears. This may also help prevent an Achilles tendon rupture.
Your podiatrist will work with you to decrease your chances of re-developing tendinitis. He or she may create custom orthotics to help control the motion of your feet. He or she may also recommend certain stretches or exercises to increase the tendon's elasticity and strengthen the muscles attached to the tendon. Gradually increasing your activity level with an appropriate training schedule-building up to a 5K run, for instance, instead of simply tackling the whole course the first day-can also help prevent tendinitis.