Vol. 4, Issue 9, Part C (2018)

Abstract
The clavicle is a sigmoid-shaped bone that is easily visible in thin people and is palpable in all except the morbidly obese. The atypical asymmetric pattern and varied diaphyseal breadths are results of patterns of an individual, mechanical behaviour and unique developmental pathway of clavicle. The varied diaphyseal breadths are being more sensitive to the effects of loadings than the lengths. This study was conducted in the Department of Anatomy, AIIMS, Patna. The sample size was of 30 adult clavicles. Bones showing obvious pathological deformities were excluded from the study. Factors such as mechanical load, pressure and tension created by muscular attachments, and genetic endowments might be responsible for such asymmetries not only in various metric traits of clavicle but also among the non-metric traits of both side human clavicles. The fact of lesser intake of calcium in the form of milk and milk products by the East Indian population and this may have led to decreased thickness of the bone and hence lesser midclavicular circumference.