APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -The sacrum is made of five fused vertebrae configured as an inverted triangular bone that is concave anteriorly and convex posteriorly. Within the sacrum lies the sacral canal, which is a continuation of the vertebral canal. It terminates as the sacral hiatus.

Detailed explanation-2: -The sacrum is made due to the fusion of five sacral vertebrae (S1–S5). This fusion of the S2–S5 vertebra is usually complete before the age of 25.

Detailed explanation-3: -The sacral canal runs down the center of the sacrum, representing the end of the vertebral canal. The five segments of the sacral vertebrae affect nerve communication to the lower part of the body. There, numerical levels are often mentioned in imaging studies of the spine.

Detailed explanation-4: -There are 5 sacral vertebral bones. They are represented by the symbols S1 through S5. The sacral vertebrae are situated in the spinal column just below the lumbar vertebrae and right above the coccyx, which is the lowest segment of the vertebral column.

Detailed explanation-5: -The sacrum is made up of five fused vertebrae (S1-S5), and three to five small bones fuse to create the coccyx. Both structures are weight-bearing and integral to functions such as walking, standing, and sitting. The sacrum and coccyx are weight-bearing spinal structures.