MORPHOMETRIC STUDY OF ACETABULUM AND ITS CLINICAL SIGNIFICANCE

Abstract :

Background: The hip joint is one of the major weight bearing joints of the body. The head of the femur articulates with the acetabular cavity of the hip bone. In the modern era hip replacement and hip reconstruction surgeries have become much common in the field of orthopedics. Thus it is inevitable for the anatomists and clinicians to note the variations and dimensions of the acetabular cavity and the head of the femur. Hence the present study was carried out with the aim to study the morphometric measurement of acetabulum.Materials and Methods: 50 human adult unpaired dry hip bones (27 right and 23 left) of unknown age and sex were collected from the Department of Anatomy of Sree Balaji Medical College and Hospital Chennai. The data of diameter and depth of the acetabulum was taken by digital sliding caliper and statistical analysis was done using Microsoft Excel 2010 and SPSS software version 23. Results: In the present study the mean acetabular depth was 23.35 1.34mm and mean acetabular diameter was 47.34 1.86mm. Discussion: As total hip replacement is a common surgery performed nowadays, awareness of the average dimensions of the acetabulum is essential as it will help the prosthetists and the surgeon to determine the correct size of the acetabular cup during total hip arthroplasty and to realign the acetabulum back to normal position. The normal acetabular depth is 9mm and less than that is regarded as dysplasia .In our study the measurement of average acetabular depth and average acetabular diameter are in accordance with the study done by Funda Tastekin Aksu et al, but differ from Gaurang parmara et al (Table-1 and Table-2). Maximum and minimum measurements of acetabular depth and diameter, r value, p value, are similar to the study done by previous authors.Conclusion: Analysing the morphometric measurements and its variations on human acetabulum is helpful in understanding not only morphological but also medico legal aspects. the present morphometric study may be helpful for orthopedicians and implant manufacturers,

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