Women who experience pain in the middle of the hip and lower back. It is important to consider whether there is any injury or lesion in the soft tissues around the posterior side of the pelvis and the joints on the posterior side of the pelvis. In this case, you should go to a regular hospital and consult an orthopedic surgeon for a diagnosis. The pain in this position is usually due to whether there is damage to the sacroiliac joint and the ligaments and cartilage around the sacroiliac joint, and there may be pain. Women are especially prone to injury around the sacroiliac joint, and especially women who have been pregnant and had children, or women who sit in offices a lot, can cause laxity in the pelvis. If the pelvis is not exercised in a timely manner, and there is a risk of twisting during activity and work, or excessive strain on the joint, this can lead to joint damage and pain in this position.