M71.55: Other bursitis, not elsewhere classified Pelvic region and thigh

You have an inflamed bursa in your pelvis or thigh.

The pelvis is made up of different bones. There are 3 bones on each side which each merge to form one large pelvic bone. A joint connects these two large pelvic bones to the sacrum at the back of the body. The sacrum is part of the lower spine. The two pelvic bones plus the sacrum form a bony pelvic ring or girdle. In front, the two pelvic bones are tightly joined to one another by ligaments and cartilage fiber. The hip joints are outside, to the side of the pelvis. They connect the pelvis to the thighbones. The hip joints enable the legs to be moved in different directions.

A bursa is a cushion of connective tissue filled with fluid. For example, there is a bursa beneath tendons or between bones and skin. The bursa prevents the tissue from rubbing together. A bursa also enables pressure to be distributed better.

A bursa inflammation can occur when there is repetitive strain, after injuries, or when there are other disorders. Bursas can also be inflamed by pathogens.

An inflamed bursa can be painful. The affected area can swell up and turn red. It may be that the pain makes it harder to move the affected area of your body.