Infracalcaneal bursitis can significantly affect your quality of life and your ability to perform your activities of daily living, due to pain and impaired gait. Inflammation of the bursal sac under your heel bone occurs because the bursa is abnormally stressed or strained in some way or bears excessive pressure for prolonged periods. Constant pressure and friction from footwear is a common cause of this health problem, and any treatment plan addressing infracalcaneal bursitis should include recommendations for footwear to avoid or use. Infracalcaneal bursitis may be diagnosed in several ways, including palpation, or light pressure applied to your affected area. If your heel pain has existed for an extended period, X-ray imaging studies may reveal localized calcification in your infracalcaneal bursa, though this is not always the case. MRI images are sometimes used as a diagnostic tool for this health problem, though MRI studies are considered unnecessary for diagnosis in many cases.
There are several factors which can predispose patients to developing this condition. These need to be assessed and corrected with direction from a physiotherapist and may include poor foot biomechanics (particularly flat feet), inappropriate footwear (e.g. excessively tight fitting shoes), muscle weakness (particularly the calf, quadriceps and gluteals), muscle tightness (particularly the calf), joint stiffness (particularly the ankle, subtalar joint or foot), bony anomalies of the heel bone, inappropriate or excessive training or activity, inadequate recovery periods from sport or activity, inadequate warm up, inadequate rehabilitation following a previous Achilles injury, change in training conditions or surfaces, inappropriate running technique, inadequate fitness, poor pelvic and core stability, poor proprioception or balance, being overweight.
Where the tendon joins the calcaneal bone, friction can cause the spaces between the tendon, bone and skin to swell and inflame with bursitis. This constitutes a calcaneal bursa. Apart from swelling over the back of the heel, you?ll feel acute tenderness and pain when you move it or even apply light pressure. Your swollen heel may look more red than the other one, and the swelling is often so hard it can feel like bone, partly because it sometimes is, as a bony overgrowth can occur in chronic cases.
Medical examination is not necessarily required in light cases where the tenderness is minimal. In all cases where smooth improvement is not experienced, medical attention should be sought as soon as possible to exclude a (partial) rupture of the Achilles tendon or rupture of the soleus muscle. This situation is best determined by use of ultrasound scanning, as a number of injuries requiring treatment can easily be overlooked during a clinical examination (Ultrasonic image). Ultrasound scanning enables an evaluation of the extent of the change in the tendon, inflammation of the tendon (tendinitis), development of cicatricial tissue (tendinosis), calcification, inflammation of the tissue surrounding the tendon (peritendinitis), inflammation of the bursa (bursitis), as well as (partial) rupture.
Non Surgical Treatment
In addition to being aware of foot-wear and inserts, be sure to modify your activity level to reduce the pain initially. Taking non-steroidal anti-inflammatory drugs (NSAIDs) and icing twice a day for 20 minute periods can help reduce the swell that leads to heel pain. Cortisone injections (more powerful anti-inflammatory medications) can be considered if your symptoms are persistent. After the swelling and pain has receded, ask your podiatrist about working with a physical therapist to strengthen the affected area in order to avoid bursitis by using your muscles in a more safe and efficient manner. If all these treatment methods fail, surgery may be the best option to excise a painful bursa (note that this is in rare cases).
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).