Idiopathic osteoarthritis of the hip has been currently attributed by researchers to the repetitive microtrauma caused
to the femoral neck by its impingement against the acetabular rim. This impingement occurs as a result of abnormal
morphological traits like Allen’s fossa, Poirier’s Facet, and Posterior Cervical Imprint that appear on the proximal
end of femur especially on the neck. Hence, this study was undertaken to investigate the incidence of these traits in
the Indian population and to find a correlation between the occurrence of the trait and the side and sex of the bone.
The study was conducted on 152 adult dried femora in the Department of Anatomy, Maulana Azad Medical College,
New Delhi, India. The positive findings were photographed. The significance of the correlation was found out using
Chi-square test. Allen’s Fossa was found to occur in 71.1% of the total bones assessed Poirier’s Facet in 31.6% and
Posterior Cervical Imprint in 19.7%. Out of these, a significant side association was found for the Poirier’s Facet
with a predominance of the left side. All the traits were found to be more in males with a significant sex variation for
Poirier’s Facet. Each trait demonstrated a significant side and gender dimorphism.