Akademik Veri Yönetim Sistemi
Congress on Movement and Motor Control, Eskişehir, Türkiye, 21 - 25 Mayıs 2021, ss.50-51
Introduction and Aim : In today's conditions, it is not possible to directly measure the ligament forces and moments acting on the joints between the limbs in the skeletal system of living things without disturbing the body's integrity. A three-dimensional biomechanical model is needed to realistically determine and analyze these force and torque values.
Method : The biomechanical model used in this study was created in accordance with the laws of mechanics by simplifying the human body structure. The force and torque values on the limbs and joints of the body can be calculated according to the iterative Newton Euler method. Using the linear and angular motions of a biomechanical model in the Newton-Euler method, dynamic equations are derived as a result of sequential operations. In order to calculate the expressions of force and torque acting on each joint, first of all, velocities and accelerations must be found from the main coordinate system, which is accepted as a reference, to the coordinate system of the other limbs by using the eccentric equations consecutively. The expressions of inertia force and torque acting on each limb are calculated by using the second laws of Newton and Euler with extroverted equations.
Findings : Force balance and torque balance expressions were created to find the forces and torques acting on joints. The resulting equation system has been tested on a human application and shown to be successful.
Conclusion :
The values obtained were calculated as 135Nm moment in the Flexion / Extension direction, 25Nm in the Abduction
/ Adduction direction and 30Nm in the Rotation direction for the L5 / S1 joint.