What causes pain in the bone at the back of the buttocks?

Nov 28, 2024 Source: Cainiu Health
Disease description:

I have been experiencing persistent pain in the bone at the back of my buttocks recently, especially after sitting for long periods or when standing up. The pain becomes more noticeable then. What could be causing this?

Doctor's answer (1)
Dr. Chen Jian

Pain in the bone at the back of the buttocks usually refers to pain in the coccyx or sacral area, a condition medically known as coccydynia or sacrococcygeal pain. The pain may be caused by several factors:

1. Ischial bursitis: This typically results from prolonged sitting, especially on hard chairs, in individuals with less body fat, causing inflammation of the bursa at the ischial tuberosity due to friction between the bone and the chair.

2. Lumbar disc herniation: Compression of the sciatic nerve can cause pain in the buttock bone.

3. Trauma: The most common cause is a direct impact to the coccyx or sacrum, such as falling and landing on a hard surface, which can lead to coccygeal dislocation or fracture.

4. Pregnancy and childbirth: During pregnancy, hormonal changes in the body can cause pelvic ligaments to loosen, and the pressure during childbirth can also result in coccygeal injury.

5. Inflammatory diseases: Conditions such as ankylosing spondylitis may affect the sacroiliac joints, leading to sacrococcygeal pain.

If the pain persists or affects daily activities, it is recommended to seek medical examination and treatment immediately.