Shoulder bursitis is inflammation of a bursa, a fluid-filled sac, in the shoulder joint. The bursa provides padding between bones, tendons, and ligaments to reduce friction and improve joint ...

Ankle bursitis occurs when one or more of the bursae sacs in the ankle become inflamed. This can cause pain, swelling, and difficulty moving the ankle. Bursae are small, fluid-filled sacs ...

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