Rib 10
Costa X
- Related terms: Rib [X]
Definition
The rib 10 (tenth rib) is classified as a "floating rib" in most individuals, meaning it does not have an anterior attachment to the sternum or the costal cartilage of the rib above it.
Anatomically, the tenth rib is often not attached to the ninth rib, with studies showing that it is a floating rib in approximately 52-59% of cases.[1-2]
The tenth rib can exhibit significant variability, including the presence of a hooked tip in some cases, which may predispose individuals to conditions such as "slipped rib syndrome".[1]
The tenth rib is typically shorter than the ribs above it and has a more variable attachment and mobility. It is also associated with the tenth intercostal nerve, which runs along its lower border. The rib's anatomy is important in surgical contexts, such as during lumbotomy or when harvesting costal cartilage for reconstructive procedures.[3-4]
References
1.Redefining the Costal Margin: A Pilot Study.Laswi M, Lesperance R, Kaye A, et al.The Journal of Trauma and Acute Care Surgery. 2022;93(6):762-766. doi:10.1097/TA.0000000000003792.
2.Anatomy of the Anterior Ribs and the Composition of the Costal Margin: A Cadaver Study.Patel A, Privette A, Bauman Z, et al.The Journal of Trauma and Acute Care Surgery. 2023;95(6):875-879. doi:10.1097/TA.0000000000004115.
3.Surgical Anatomy of the 10th and 11th Intercostal, and Subcostal Nerves: Prevention of Damage During Lumbotomy.van der Graaf T, Verhagen PC, Kerver AL, Kleinrensink GJ.The Journal of Urology. 2011;186(2):579-83. doi:10.1016/j.juro.2011.03.120.
4.The Thoracoabdominal Intercostal Nerves: An Anatomical Study for Their Use in Neurotization.Court C, Vialle R, Lepeintre JF, Tadié M.Surgical and Radiologic Anatomy : SRA. 2005;27(1):8-14. doi:10.1007/s00276-004-0281-8.
