Cerebral palsy (CP) is a disease that causes several deformities in the musculoskeletal system and it is manifested by various gait pathologies. Crouch gait is one of the most common gait problems. It is known that the kinetic and kinematic parameters of the patients with CP differ from healthy individuals. In this study, it was aimed to determine the differences in joint kinematics, joint kinetics, and muscle forces between healthy children and children with crouch gait. To do so, OpenSim was employed for the analysis of the patients with CP and healthy individuals during walking. Flexion/extension angles of the hip, knee, and ankle joints were obtained using the inverse kinematics approach. The inverse dynamics approach was applied for the calculation of the joint moments. Muscle forces of the medial hamstring, biceps femoris, rectus femoris, gastrocnemius, and tibialis anterior were calculated using the static optimization method. It was investigated whether the timings of the theoretically predicted muscle activations match with the experimental data by using electromyography (EMG) data recorded from patients with CP. There was no significant difference in the flexion/extension angle of the hip joint between children with CP and healthy individuals. However, flexion/extension angles of the knee and ankle joints of the children with CP were found to be significantly different from healthy individuals. Significant differences were also found between the patients with CP and healthy individuals for the hip, knee, and ankle joint moments in the sagittal plane, except for the hip extensor moment and second knee extensor moment. While biceps femoris and semimembranosus muscle forces of the children with CP were higher than those of healthy individuals, gastrocnemius, rectus femoris, and tibialis anterior muscle forces were lower. The activation patterns of the calculated muscle forces were found to be compatible with the experimentally obtained activation times.
Publication Date : December 31, 2020
|APA||Arslan, Y . (2020). Serebral Palsili Çocukların Yürüme Karakteristiğinin Biyomekanik Değerlendirmesi . Avrupa Bilim ve Teknoloji Dergisi , (20) , 77-84 . DOI: 10.31590/ejosat.747998|