Bursitis happens when the bursa is inflamed. The burse acts as a cushion between bones, tendons, joints and muscles, bursae are fluid-filled sacs (the plural of bursa is bursae). People with bursitis will feel pain at the site of inflammation. The medical word "bursa" comes from the Latin bursa, meaning a purse, which is what a bursa resembles.
Pain at the posterior heel or ankle is most commonly caused by pathology at either the posterior calcaneus (at the calcaneal insertion site of the Achilles tendon) or at its associated bursae. Two bursae are located just superior to the insertion of the Achilles (calcaneal) tendon. Anterior or deep to the tendon is the retrocalcaneal (subtendinous) bursa, which is located between the Achilles tendon and the calcaneus. Posterior or superficial to the Achilles tendon is the subcutaneous calcaneal bursa, also called the Achilles bursa. This bursa is located between the skin and posterior aspect of the distal Achilles tendon. Inflammation of either or both of these bursa can cause pain at the posterior heel and ankle region.
A dull ache under the heel when not weight bearing. Sometimes severe pain when walking. Pain can increase after resting (sleeping or sitting) then standing and placing pressure on the area again. Throbbing under the heel. Swelling may be identified as a discernible lump under the heel. This is the swollen calcaneal bursa itself. Tingling under the heel as swelling affect the plantar nerves. Pains shooting into the foot or up the leg.
Careful examination by your physician or physiotherapist can determine if the inflammation is from the Achilles tendon or from the retrocalcaneal bursa. Tenderness due to insertional Achilles tendinitis is normally located slightly more distal where the tendon inserts into the back of the heel, whereas tenderness caused by the retrocalcaneal bursa is normally palpable at the sides of the distal Achilles tendon. Diagnosis can be confirmed with an ultrasound investigation, MRI or CT scan.
Non Surgical Treatment
Rest and apply cold therapy or ice. Ice should not be applied directly to the skin as it may cause ice burns but wrap in a wet tea towel. Commercially available hot and cold packs are often more convenience than using ice. Taping the bursa with a donut shaped pad to take some of the pressure from footwear may help. A doctor may prescribe anti-inflammatory medication e.g. ibuprofen to reduce the pain and inflammation. Applying electrotherapy such as ultrasound may reduce inflammation and swelling. A steroid injection followed by 48 hours rest may be given for persistent cases. If the bursitis is particularly bad and does not respond to conservative treatment then surgery is also an option.
It isn't always possible to avoid the sudden blow, bump, or fall that may produce bursitis. But you can protect your body with measures similar to those that protect you from other kinds of overuse injuries, such as tendinitis. Keep yourself in good shape. Strengthening and flexibility exercises tone muscles that support joints and help increase joint mobility. Don?t push yourself too hard (or too long). If you?re engaged in physical labor, pace yourself and take frequent breaks. If you?re beginning a new exercise program or a new sport, work up gradually to higher levels of fitness. And anytime you?re in pain, stop. Work on technique. Make sure your technique is correct if you play tennis, golf, or any sport that may strain your shoulder. Watch out for ?elbow-itis.? If you habitually lean on your elbow at your work desk, this may be a sign that your chair is uncomfortable or the wrong height. Try to arrange your work space so that you don?t have to lean on your elbow to read, write, or view your computer screen. Take knee precautions. If you have a task that calls for lots of kneeling (for example, refinishing or waxing a floor), cushion your knees, change position frequently, and take breaks. Wear the right shoes. High-heeled or ill-fitting shoes cause bunions, and tight shoes can also cause bursitis in the heel. Problems in the feet can also affect the hips. In particular, the tendons and bursae in the hips can be put under excessive strain by worn-down heels. Buy shoes that fit and keep them in good repair. Never wear a shoe that?s too short or narrow. Women should save their high heels for special occasions only. Avoid staying in only one position for too long. Get up and walk around for a while or change positions frequently.