The hip bones, or hip bones, and the pelvis are made up of two hip bones and a sacrum (and coccyx). And the hip bone is made up of the ilium, sciatica, and pubis, and in the adult body these three bones fuse into one bone. Dense osteitis is an osteosclerotic disease, mainly involving the sacroiliac joints and iliac bones, mainly manifested as lumbosacral or lower lumbar pain, can be in the lower buttocks and thighs at the back of the buttocks radiating pain. The patient’s body type is more obese, the lumbosacral angle is larger, the sacrospinal muscles are mostly in a state of tension, and the pelvis and hip joint activities can be limited. The erythrocyte sedimentation rate and C-reactive protein are normal, showing aseptic inflammation. Dense osteitis is self-limiting. If symptoms are obvious, non-steroidal drugs such as etoricoxib and celecoxib can be used for anti-inflammatory and analgesic purposes under the guidance of specialized doctors. Dense osteitis should be distinguished from ankylosing spondylitis, lumbar disc herniation and other diseases, once it occurs, it should go to the hospital in time and be diagnosed and treated under the guidance of professional doctors.