Не только у меня отдельно. У всех отдельно:A "  bursa " is a small fluid-filled sac that provides a cushion for your tendons, muscles and bones near your  joints . When these little sacs become inflamed, the condition is called "bursitis." Bursitis often develops near joints that perform the same motions frequently and repeatedly. The hip, elbow and shoulder are the most common sites for bursitis, but it can also occur near the heel, knee and big toe.