Anthropometric study of the hip joint in Northeastern region population with computed tomography scan
ABSTRACT 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.
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 degrees (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.
The mean parameters observed were as follows: acetabular angle 39.2 degrees, centre edge angle 32.7 degrees, neck shaft angle 139.5 degrees, acetabular version 18.2 degrees, femoral neck anteversion 20.4 degrees, acetabular depth 2.5 cm and joint space width 4.5 mm.
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 degrees more than the western literature. The remaining parameters were less or equal to the western literature.
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ABSTRACT: To obtain the morphological measurements of acetabulum for southern Chinese population, 40 volunteers were evaluated by CT scan. The 3D model of pelvis was reconstructed from CT scan images. The AVA, ABA and SID were measured for both sides. The mean AVA, ABA showed no significant difference for sex and both sides. But the SID showed the opposite results. The comparison of these parameters with western data were performed, and it indicated that there was significant different between our results and the data for western population published. This study may provide important reference in designing proper gender-and region-prosthesis for southern Chinese population.4th IEEE International Conference on Information Science and Technology; 03/2014
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ABSTRACT: This paper discusses on the measurement aspects of Rapid Prototyping (RP) model in the hip joint orthopaedic surgery. Computed Tomography (CT) patient scan data with a pelvic fracture was obtained in a Digital Imaging and Communications in Medicine (DICOM) format. Mimics software was used to process the data. Threshold and region of interest tools were used to prepare the three-dimensional (3D) digital model. Artefacts and noise distortions were removed manually before generating the 3D digital model. Then, the 3D digital model was converted to Standard Triangulation Language (STL) file. RP medical model was successfully produced using a Fused Deposition Modeling (FDM) machine. Measurement comparisons were done on the CT scan data, 3D digital model and FDM medical model. The FDM medical model was given to the orthopaedic surgeon for comments and feedback. This is an important step as surgeons play a crucial role in validating the RP medical model. The results obtained showed that the RP medical model has high accuracy rate as measurements were not significant compared to the CT scan and 3D digital model measurements. Therefore, RP can be integrated for medical applications.Biomedical Engineering and Sciences (IECBES), 2010 IEEE EMBS Conference on; 01/2010