Sacroiliac joint (SIJ) pain is a common but often overlooked source of discomfort in the lower back and hips. The SI joints, ...

Actress and singer Olivia Newton-John has revealed that her breast cancer has spread to her sacrum bone in her back. How can back pain be a sign of breast cancer?

Results showed patients who undergo unilateral total hip arthroplasty may experience decreases in bone mineral density at the sacral ala contralateral to the arthroplasty, which can lead to the ...

The mistake, he said, was in the number of sacrum bones (where the tail attaches to the spinal cord). The Apatosaurus sacrum was made of three bones, while the Brontosaurus had five.