Threeª²dimensional finite element pelvic modeling during standard gait and its biomechanical significances

    WANG Guangª²Ye, ZHANG Chunª²Cai, XU Shuoª²Gui, REN Ke

    Department of Orthopedics, Changhai Hospital, Second Military Medical University, Shanghai 200433, China

    ¡¾Abstract¡¿ AIM: To construct a threeª²dimensional (3D) finite element pelvic model which includes both 3D pelvic muscle and acetabular contact forces during standard gait. METHODS: A normal pelvis from an adult male subject was scanned by CT and the images of every crossª²section were obtained. A pelvic model including both threeª²dimensional pelvic muscle and acetabular contact forces during standard gait was constructed with PATRAN 2005R2 software. RESULTS: The constructed 3D finite element pelvic model clearly reflected the real pelvic anatomy and biomechanical behavior, especially the muscle force and hip contact force. The model was divided into 113 028 nodes and 137 524 units. CONCLUSION: The construction of 3D finite element pelvic model provides basic data which are critical for accurately modeling either normal loads or stresses and strains, or the effects of abnormal conditions. ......