Almost all medical words ending in “itis” indicates swelling of some sort – as an example, peritonitis and laryngitis. A bursa is a fluid-filled sac which usually prevents muscle insertions rubbing on bones within your body.
Shoulder bursitis takes place when one of the bursa sacs around your shoulder joint gets swollen and sore. The reason for this is overuse – constant, repetitive movements of the arm rub the tendon completely around the shoulder bursa, which in turn causes the inflammation. After that, any lifting from the arm above 90 degrees or overhead causes pain and interferes with mobility. At best, shoulder bursitis is a annoyance, at worst can spell problems for the continuing career of the athlete. If your livelihood depends on you fast-bowling in cricket, then the onset of bursitis could be a disaster.
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