International Journal of Anatomy and Research

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Type of Article : Case Report

Year: 2014 | Volume 2 | Issue 4 | Page No. 744-747

Date of Publication: 31-12-2014

DOI: 10.16965/ijar.2014.538


Raghavendra D.R. *1, Nirmala D 2.

*1 Post graduate student, Department of anatomy, J J M Medical College, Davangere, Karnataka, India.
2Associate Professor, Department of anatomy, J J M Medical College, Davangere, Karnataka, India.

Address: Dr. Raghavendra D.R. Post graduate student, Department of anatomy, J J M Medical College, Davangere, 577004, Karnataka, India.


Costal cartilages are flattened bars of hyaline cartilages. All ribs except the last two, join with the sternum through their respective costal cartilages directly or indirectly. During  dissection for 1st  MBBS students in the Department of Anatomy, JJMMC, Davangere,  variation was found in a male cadaver aged 45 –50 years. Multiple ossified costal cartilages for 1st  rib were  present on left side. There were 3 costal cartilages connecting 1st rib to manubrium. There were two small intercostal spaces between them. The lower two small costal cartilages fused together to form a common segment which in turn fused with large upper costal cartilage. The large upper costal cartilage forms costochondral joint with 1st rib. All costal cartilages showed features of calcification. The present variation of multiple ossified costal cartilages are due to bifurcation of costal cartilage. It may cause musculoskeletal pain, intercostal nerve entrapment or vascular compression. Awareness of these anomalies are important for radiologists for diagnostic purpose and for surgeons for performing various clinical and surgical procedures.
KEY WORDS: Costal cartilage, Bifurcation of Rib, Sternum.


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Raghavendra D.R., Nirmala D. MULTIPLE OSSIFIED COSTAL CARTILAGES FOR 1ST RIB. Int J Anat Res 2014;2(4):744-747. DOI: 10.16965/ijar.2014.538




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