Our wrists! It is also the most injured joint because of it's use.
The knee joint is a synovial joint, one of the largest, most complex, and most frequently injured joints. This joint involves the femur (upper leg), tibia (lower leg) and the patella.This called the tibiofemoral joint is supported by a joint capsule, cartilage, and numerous ligaments and muscle tendons.It permits flexion and extension and, with knee flexed, some internal and external rotation.
hinge and pivot
It would have to be your lungs.
The knee joint is the largest and most extensive in the human body.
The knee is one of the most commonly injured joints in the body due to its weight-bearing nature and complex structure. Injuries can range from ligament tears (such as the ACL or MCL) to meniscus tears and cartilage damage.
Knee
The subacromial bursa is both the most important bursa in the shoulder joint for reducing friction and the most commonly injured. Inflammation of this bursa, known as subacromial bursitis, can cause pain and restricted motion in the shoulder.
The largest and most complex synovial joint in the human body is the knee joint. It is classified as a hinge joint and allows for flexion and extension, as well as slight rotation. The knee joint is made up of the femur, tibia, and patella bones, as well as several ligaments and menisci to stabilize and support the joint.
Any ligament can be sprained, but the most frequently injured ligaments are at the ankle, knee, and finger joints.
Skin. The human organ of skin that covers the whole body is deffinitelly the most injured of all body organs. (Bet you didn't know skin was an organ)
Sprains typically occur in the ligaments, which are tough bands of tissue that connect bones together at a joint. Common locations for sprains include the ankles, wrists, and knees.