Hamstrings help by pulling the shin backwards when forward pressure is applied - such as when jumping or sprinting. If the hamstring didn't pull back and keep the shin in a vertical position, then pressure and shearing will occur within the knee joint on multiple tendons and ligaments.
biceb femoris, semimembranous, semitendinosus
hamstrings
hamstrings
hamstrings and the quadriceps
The muscles involved in knee flexion are the hamstrings, gastrocnemius, and popliteus.
Knee Extension
hamstrings
The hamstrings flex the knee and extend the hip.
hamstring group is the primary muscle group for flexing the knee
The primary muscles involved in hip extension are the gluteus maximus and the hamstrings. The primary muscles involved in knee flexion are the hamstrings and the gastrocnemius.
The quads are responsible for extending the knee joint, while the hamstrings are responsible for flexing the knee joint. Together, they work in opposition to produce movement and stabilize the knee during activities like walking, running, and jumping.
Your hamstring.