Incidence of Rhomboid Impression in the Adult Human Clavicles

Abstract

Background and Aims: The attachment of the ligament on the inferior surface of medial two third of clavicle produce various patterns like tubercles, grooves etc. called as the rhomboid impression. This impression although a normal morphological variant may be misdiagnosed as pathological lesion like necrosis, tumour in radiological images besides this, the study of rhomboid impression is very scanty in North Indian population. So a curious desire has developed to conduct this study. Material and methods: The present cross-sectional descriptive study was done on dried specimens of adult human clavicles (60) obtained from the department of Government medical college Jammu. This study was done over a period of one year. The morphology of the clavicles was studied, and various types of rhomboid impression were observed. Results: The various patterns of rhomboid impressions found in our study were flat and rough, flat and smooth, depressed and rough, depressed and smooth, elevated and rough and elevated and smooth. Conclusions: The results of present study concluded that the impression on the inferior surface of medial two third of clavicle i.e. Rhomboid impression was present in all clavicle bones. The predominant type of rhomboid impression on both sides was type1 (flat and rough). Keywords: Clavicle, costoclavicular ligament, rhomboid impression