Determination of the hip joint center based on 3D surface Anthropometry

The predictive methods are commonly used to estimate the Hip Joint Center (HJC) clinically. This study aimed to determine whether the predictive methods are suitable when applies to 3D scan data. We also sought to determine the errors between different predictive methods. 14 subjects were taken the whole body three-dimensional laser scan. The inter-anterior superior iliac spine distances (IAD) were acquired by 3D surface anthropometry, and two predictive methods that only relied on IAD were used to calculate HJC location. The HJC location was also determined using motion analysis. The distances between right and left HJCs were calculated, and the differences between those methods were studied. Results show the predictive methods were accurate estimated the HJC on the 3D scan data, and the most accurately method was by taking the point 14% IAD medial, 30% IAD distal and 19% IAD posterior to the Antero-Superior Iliac Spine (ASIS). © 2011 Taylor & Francis Group