APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -The key difference between sacrum and coccyx is that the sacrum is a triangular-shaped bone that consists of five fused segments (S1-S5) while the coccyx is the final segment of the vertebral column that includes three to five fused segments. The adult vertebral column consists of 26 strong bones.

Detailed explanation-2: -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".

Detailed explanation-3: -The vertebrae are separated by intervertebral discs, which act as cushions between the bones.

Detailed explanation-4: -Thoracic Spine-12 vertebrae. Lumbar Spine-5 vertebrae. Sacral Spine-5 fused vertebrae. Coccyx-3-5 fused vertebrae.