Evidence of Costoclavicular Joint as A Synovial Joint


Shavi Garg
Sushilkumar Srivastava


Introduction: The present study was conducted to note the osteological evidence of a synovial joint between clavicle and first rib in Indians. Material and Methods: The present study was conducted on 310 pairs of adult clavicles and first ribs, out of which 210 pairs were males and 100 pairs were females obtained from the Anatomy department of Pt. B. D. Sharma Postgraduate Institute of Medical Sciences, Rohtak. The articular facets were studied and measured with the help of a sliding Vernier caliper (Micropole). Results: Among 210 pairs (420 no.) of male clavicles examined, 6 clavicles (2.86%) had a circumscribed smooth articular facet with well-defined margins. Out of these 6 clavicles, 3 (1.43%) were of right side and 3(1.43%) were of left side. A corresponding facet was present on the first ribs of the same skeletons. The facets were found to be present unilaterally and that too in males only. The measurements of the articular facets on the rhomboid area of the clavicles and ribs were-the average length, width and elevation was 7mm, 5.4mm and 2.2mm respectively. Conclusion: These articular facets on the rhomboid area of clavicles and first ribs are osteological evidence of a synovial articulation between clavicle and first rib.


How to Cite
Garg, S., & Srivastava, S. (2019). Evidence of Costoclavicular Joint as A Synovial Joint. International Journal of Medical and Dental Sciences, 1701–1705. https://doi.org/10.18311/ijmds/2019/21858


  1. Jones FW. The bones of the upper limb. In Bu-chanan’s Manual of Anatomy. 7th ed. London: Bailliere Tindall and Cox; 1946. p. 268.
  2. Cave AJE. The nature and morphology of the costo-clavicular ligament. J Anat. 1961; 95:170–9.
  3. PMid:13691762 PMCid:PMC1244461
  4. Poirier P. La clavicule et ses articulations. J Anat1. 890; 26: 81–103.
  5. Fick R. In Bardeleben’s Handbuch der Anatomie des Menschen. Jena: Fischer; 1904.
  6. Johnell IR. The costoclavicular joint. Skeletal Radiol. 1986; 15(1):25–6. https://doi.org/10.1007/BF00355069
  7. Testut L. Traitg d’anatomie humaine. Paris: Doin; 1905. p. 477–81.
  8. Bryce TH. In Quain’s Elements of Anatomy. London: Longmans; 1915.
  9. Frazer JE. The Anatomy of the human skeleton. 4th ed. London: J&A Churchill Ltd; 1948. PMCid:PMC1988079
  10. Schaeffer’s JP. Osteology In: Morris’ Human Anat-omy: A complete systematic treatise. 10th ed. Philladelphia: The Blakiston Company; 1942. p. 187.
  11. Williams PL, Bannister LH, Berry MM, Collins P, Dyson M, Dussek JE, Ferguson MWJ. Skeleton System In: Gray’s Anatomy. 38th ed. Edinburgh: Churchill Livingston; 1995. p. 621. PMid:7500101 PMCid:PMC1073758
  12. Rani A, Chopra J, Rani AR, Mishra SR, Srivastava AK, Sharma PK et al. A study of morphological features of attachment area of costoclavicular ligament on clavicle and first rib in Indians and its clinical relevance. Biomedical Research. 2011; 22(3):349–54.
  13. Humphrey LT, Dean MC, Stringer CB. Morphological variation in great ape and modern human mandibles. J Anat. 1999; 195:491–513. https://doi.org/10.1046/j.14697580.1999.19540491.x PMid:10634689 PMCid:PMC1468021
  14. Wood BA, Li Y, Willoughby C. Intraspecific variation and sexual dimorphism in cranial and dental variables among higher primates and their bearing on the hominid fossil record. J Anat. 1991; 174:185–205. PMid:2032934 PMCid:PMC1256054