Anthropometric study of the hip joint in Northeastern region population with computed tomography scan

Abstract

Background:Anthropometric study of the hip joint has important clinical implications and is largely unknown for the northeastern region of India. The purpose of this study is to determine the anatomic variation of the normal hip joint among the people of the northeastern region and to statistically compare them with the available data worldwide.Materials and Methods:We evaluated 104 individuals with normal hip joints and of different ethnic backgrounds (Caucasoid and Mongoloids) clinically and by plain x- ray. One topogram of the hip joint, one axial section of the femoral head and femoral condyles of the individual was taken on CT scan. Twelve cases had center edge angle (CE) angle less than 20° (unilateral/bilateral), were considered to be dysplastic and were excluded from the study. Thus the present study includes 92 individuals (184 normal hips, Mongoloids = 45; Caucasoid = 47) between 20-70 years of age. We calculated the mean of the CE angle, acetabular angle, neck shaft angle, acetabular version, femoral neck anteversion, acetabular depth and joint space width in both sexes.Results:The mean parameters observed were as follows: acetabular angle 39.2°, centre edge angle 32.7°, neck shaft angle 139.5°, acetabular version 18.2°, femoral neck anteversion 20.4°, acetabular depth 2.5 cm and joint space width 4.5 mm.Conclusion:The parameter and its values in our series shows differences when compared to the other western literatures. The neck shaft angle and the femoral neck anteversion in our individuals was 5-6° more than the western literature. The remaining parameters were less or equal to the western literature.

Morphometric study of depth of acetabulum

“…It was found that in males, in comparison to the females acetabular depth was larger. 20 The mean depth of male and female acetabulum of the present study almost coincides with the mean depth found by the Saikia KC et al and Arsuaga JL et al 15,18 In the present study, the mean DA in male > female. Similar finding was observed in all other studies except the study of Saikia KC et al where they found identical values of mean acetabular depth between males and females (Table 5).…”

“…14 Saikia KC et al recorded the mean depth of acetabulum was 2.5 cm. 15 In the present study, the mean depth of acetabulum is 26.17±2.83 (20.26-32.32). The mean depth of the present study coincides with the study done by Mukhopadhaya B et al and Saikia KC et al (Table 4).…”

“…The mean depth of the present study coincides with the study done by Mukhopadhaya B et al and Saikia KC et al (Table 4). 9,15 Lang C et al studied a series of mostly unorthodox measurements on a sample of 45 (19 females and 26 males) dry hip bones from the Grant Collection, curated in the Medical Sciences Building at the University of Toronto. They found that the mean acetabular depth in males and females was 29.00 mm (SD-3.80) and 26.64 mm (SD-2.93) respectively.…”

“…6 Saikia KC et al found the mean values of acetabular depth was identical between males:2.5 cm (1.6-5.6 cm) and females: 2.5 cm (1.4-5.2 cm). 15 Papaloucas C et al carried out the measurements of 200 hip bones within the Greek population. It was found that in males, in comparison to the females acetabular depth was larger.…”

Study of neck shaft angle of femur in population of Bihar

“…The study done by KC Saikia among people of Guwahati using CT scan was 139.5 which was very high neck shaft angle as compared to other studies. 7 The study done by RC Siwach in 2003 among people of Rohtak using dry bones, neck shaft angle was 123.5 0 which is very low compared to this study. 8 The neck shaft angle of present study was similar to study done by TR Deshmukh in Vidarbha.…”