Abstract

Background: The hip joint is a ball and socket type of synovial joint comprising of head of femur and acetabulum of hip bone. Morphological variations of hip joint are noticed in different population resulting from racial, ethnic, and sexual differences. Present study was aimed to study acetabular depth, diameter and acetabular depth ratio of hip joint of south Indian population. Material and Methods: Present study was prospective, observational study, conducted 264 AP plain radiographs of normal hip joints (147 males and 117 females). The age group ranged from 20-90 years. All linear measurements including acetabular depth, acetabular diameter, Acetabular depth ratio & femoral head diameter were measured using Dicom viewer. Results: In the present study, acetabular depth (AD) was observed to be higher in males than in females, Higher mean acetabular diameter value was recorded on right side when compared to left side irrespective of gender. When the AD on the left side of males and females were compared, the difference in mean acetabular depth was found to be statistically significant (P<0.001). Higher mean acetabular diameter value was recorded on right side when compared to left side in both the genders. When comparison of Acetabular diameter was made between both genders irrespective of side, it was found that the value was highly significant (P<0.001). The mean value of Acetabular depth ratio (ADR) was found to be more in men than in women, showing a dysplastic tendency in the former. No statistical significance was found when ADR was compared between male right and left sides (p – 0.864) The mean value of ADR was found to be more in men than in women, showing a dysplastic tendency in the former.

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