Joints at the knee and elbow are hinge joints, designed to move in one primary direction (flexion and extension). The structure and shape of these joints limit rotational movement to protect them from injury. Rotation at these joints is mainly performed by the muscles and bones of the forearm and leg rather than at the knee or elbow joints themselves.
"It bends when you need it too. If we did not have that then you wouldn't be able to walk."what.
When you bend your leg, the muscles in your thigh contract, pulling on the tendons that are attached to the bones in your lower leg. This causes your knee joint to flex, bringing your lower leg closer to your thigh. Additionally, the bones in the knee joint glide and rotate to allow for smooth and efficient movement.
If your knees were ball and socket joints, your legs would be able to move in a wider range of motion than with hinge joints. You would have increased flexibility and be able to rotate your legs in various directions, similar to how your shoulders can rotate. However, this increased mobility may also make your knees more prone to dislocations or injuries due to the lack of stability compared to hinge joints.
knee
No, you should not straighten your leg after a knee subluxation as this action could further hurt your knee joint.
The hamstrings cross and act upon two joints - the hip and the knee. They extend the hip, flex the knee and rotate the lower leg inward when the knee is bent. The hamstrings also extends the hip as when beginning to walk; both short and long hamstring heads flex the knee and outwardly rotates the lower leg when the knee is bent. The hamstrings play a crucial role in many daily activities, such as, walking, running, jumping, and controlling some movement in the trunk.
No, but the knee is.
knee
Your knee allows you to walk and bend your leg.
In your KNEE JOINT.
The muscle that contracts when the leg is extended at the knee is call the gastrocnemius muscle