COSTAL ELEMENTS-SACRAL VERTEBRAE
From NeuroRehab.wiki
SUMMARY
1. The 5 sacral vertebrae are fused to form a single bone.
2. The costal elements are fused to form the lateral mass of the sacrum.
Image: Case courtesy of OpenStax College, Radiopaedia.org. From the case rID: 42764.
Reference(s)
R.M.H McMinn (1998). Last’s anatomy: regional and applied. Edinburgh: Churchill Livingstone. Get it on Amazon.
Drake, Richard L., et al. Gray's Anatomy for Students. Elsevier, 2023. Get it on Amazon.