rectus femoris
balance
balance
The gastrocnemius muscle is the synergist of plantar flexion of the foot. It works together with the soleus muscle to help push the foot downward and point the toes.
Vertebral Foraminal Entrapment on Hip Flexion and Knee Extension
Frontal Plane about the anterioposterior axis
hip flexion and hip extention
The prim mover for hip flexion is the Rectus femoris. This is a quadricep muscle that crosses the hip joint.
The rectus femoris muscle is a synergist of the iliopsoas. It works together with the iliopsoas to flex the hip joint.
Pectineus
The primary antagonist for hip flexion is the gluteus maximus, as it functions to extend the hip joint. Additionally, the hamstring muscles, particularly the semitendinosus, semimembranosus, and biceps femoris, also play a role in opposing hip flexion. When the hip flexors contract to lift the thigh, these muscles act to control or resist that movement.
In running, the action at the hip joint is hip flexion. This movement allows the thigh to move forward in front of the body, which is essential for propelling the body forward during the running gait.
Flexion of the Hip and extension of the Knee