A bursa is a fluid-containing sac that is present at many areas of pressure on the body. Its job is to protect these areas of pressure by being a shock absorber. A bursitis is an abnormal inflammation of the bursa sac caused by abnormal excessive pressure, stress and/ or strain over the area it is protecting. On the heel bone, there are two bursa sacs: one on the bottom and the other on the back. Specifically on the bottom of the heel, it is known as an Inferior (bottom) Calcaneal (heel) Bursa. On the back of the heel, it is called the Retro (back) Calcaneal Bursa. When either of these bursas become abnormally stressed, strained, or swollen, the result is bursitis of the heel. It is this bursitis that is the reason for pain in the heel upon arising (Poststatic Dyskinesia) in the morning or after resting for a while. You can either develop these bursitises with or without the presence of heel spur (explanation to follow). As stated before, Morton?s Toe can cause this by causing over pronation in the foot.
Feet are extremely resilient and are designed to stand up to the pressures of day-to-day living. In some cases, though, foot structures may break down when subjected to chronic stress associated with long periods of weight-bearing activity on concrete, asphalt, or other hard surfaces (especially when footwear does not allow for proper weight distribution). Foot problems, including infracalcaneal bursitis, are often made worse by poorly designed footwear, and pressure, impact, and shear forces can damage the feet over time. Bursal sacs are intended to minimize this damage, but sometimes the bursa itself becomes inflamed. A rapid increase in physical activity levels or thinning of the heel?s protective fat pad are factors that may contribute to infracalcaneal bursitis. Other possible causes of infracalcaneal bursitis include blunt force trauma. Arthritic conditions. Acute or chronic infection. The following factors may increase a person?s risk of bursitis, including infracalcaneal bursitis. Poor conditioning. Exposure to cold weather. Participating in contact sports. Having a previous history of bursitis in any joint. Heel striking when running, especially in conventional running shoes with heel elevation.
Pain at the back of the heel, especially when running uphill. Pain may get worse when rising on the toes (standing on tiptoes). Tenderness at the back of heel. Swelling at the back of heel.
If heel pain has not responded to home treatment, X-rays may be ordered. These images can show deformities of the heel bone and bone spurs that have developed at the attachment of the Achilles. If there is swelling and/or pain that is slightly higher and within the Achilles tendon itself, an MRI may be ordered to determine if the tendon is simply inflamed or if there is a chronic tear on the tendon. Aspiration and lab tests. If a septic bursitis is highly suspected, a doctor may perform an aspiration, removing fluid from the bursa with a needle and syringe. In addition to relieving pressure and making the patient more comfortable, it provides a fluid sample that can be tested for infection.
Non Surgical Treatment
During the initial acute phase of the condition, patients should apply ice to the back of the heel for 15 to 20 minutes and follow the R.I.C.E.R regime. Avoid activities that cause pain. Gradual progressive stretching of the calf muscle and Achilles tendon is also advocated. Changing the footwear. Wearing an open-backed shoe may help relieve pressure on the affected region. For those whose symptoms were caused by a sudden change from wearing high-heeled shoes to flat shoes, the temporary use of footwear with a heel height in between may be helpful. Inserting a heel cup in the shoe may help to raise the inflamed region slightly above the shoe?s restricting heel counter and relieve the pain. It is advisable to also insert the heel cup into the other shoe to avoid any leg-leg discrepancies that can lead to other problems. Training frequency and intensity should be gradually progressed with adequate rest between trainings.
Surgery to remove the damaged bursa may be performed in extreme cases. If the bursitis is caused by an infection, then additional treatment is needed. Septic bursitis is caused by the presence of a pus-forming organism, usually staphylococcus aureus. This is confirmed by examining a sample of the fluid in the bursa and requires treatment with antibiotics taken by mouth, injected into a muscle or into a vein (intravenously). The bursa will also need to be drained by needle two or three times over the first week of treatment. When a patient has such a serious infection, there may be underlying causes. There could be undiscovered diabetes, or an inefficient immune system caused by human immunodeficiency virus infection (HIV).