If your sacrum hurts it could be that you injured your sacrum without knowing about it.
Being in a car accident can also cause your sacrum to hurt or other accidents that damage your sacrum.
A sudden impact, such as a motor vehicle accident or a fall, can damage your sacroiliac joints.
Arthritis. Wear-and-tear arthritis (osteoarthritis) can occur in sacroiliac joints, as can ankylosing spondylitis a type of inflammatory arthritis that affects the spine. Pregnancy.
Tailbone pain pain that occurs in or around the bony structure at the bottom of the spine (coccyx) can be caused by trauma to the coccyx during a fall, prolonged sitting on a hard or narrow surface, degenerative joint changes, or vaginal childbirth.
Your sacrum is the triangular bone just below the lumbar vertebrae.
The sacrum has five segments fused together into one large bone.
In the months before birth, these vertebrae grow together into one bone that forms the base of the spine and the center of the pelvis.
The sacrum forms the posterior pelvic wall and strengthens and stabilizes the pelvis.
Joined at the very end of the sacrum are two to four tiny, partially fused vertebrae known as the coccyx or "tail bone".
Initial treatments for sacroiliac joint pain typically include:
Brief rest period. A rest period of 1 to 2 days may be advised.
Applying ice or heat. Ice applied to the low back and pelvis can reduce inflammation and alleviate pain and discomfort.
You may experience sacroiliac (SI) joint pain as a sharp, stabbing pain that radiates from your hips and pelvis up to the lower back and down to the thighs.
Sometimes it may feel numb or tingly, or as if your legs are about to buckle.
When pain in your SI joint flares up, your doctor can bring you relief, but a few moves at home can help, too.
It helps to be active, but start slowly, like with a few minutes of daily walking, swimming, or riding a stationary bike.
If your pain level doesn't go up, work up to 20 or 30 minutes of exercise at a time.