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Bifid or forked or bifurcated rib is a congenital skeletal abnormality of the rib cage with the cleaved sternal end into two. They are thought to occur in ~0.2% of the population and there may be a female as well as right-sided predilection 2.
Bifid ribs can be seen in Gorlin (nevoid basal cell carcinoma) syndrome.
- 1. Cağli K, Ozçakar L, Beyazit M et-al. Thoracic outlet syndrome in an adolescent with bilateral bifid ribs. Clin Anat. 2006;19 (6): 558-60. doi:10.1002/ca.20280 - Pubmed citation
- 2. Kurihara Y, Yakushiji YK, Matsumoto J et-al. The ribs: anatomic and radiologic considerations. Radiographics. 19 (1): 105-19. Radiographics (full text) - Pubmed citation