HIP MORPHOLOGY: COMPARATIVE STUDY BETWEEN EGYPTIANS AND JAPANESE ADULTS

Abstract

The prevalence of osteoarthritis appears to vary widely among ethinic groups. Many studies had been published describing the acetabular morphology of Chinese, Nigerians, Singaporeans and Japanese. No previous studies comparing Egyptian Arabs and Japanese Orientals work available. Purpose: The aim of this study was to determine the ethnic variations of acetabular morphology between Egyptian and Japanese populations. Patients and Methods: A total of 844 Egyptian and 757 Japanese consecutive patients with no clinical evidence of hip osteoarthritis and who underwent pelvic radiography in the supine position for hip trauma or a routine health check were analyzed for the relationships between the center-edge (CE) angle, Sharp angle, acetabular head index, as well as the relationships of the above-mentioned variables with age, gender, body height. Results: Comparing the measurements of those three parameters in both populations showed statistically significant values (all Egyptian versus Japanese, all female versus male are significant). Conclusion: Our data confirm the presence of ethnic variations in acetabular morphology which predispose to various pathologies of the hip joint.