The shoulder joint is a ball-and-socket joint formed by the articulation between the head of the humerus and the glenoid cavity of the scapula. The lateral collateral ligament is on the lateral side o...The shoulder joint is a ball-and-socket joint formed by the articulation between the head of the humerus and the glenoid cavity of the scapula. The lateral collateral ligament is on the lateral side of the knee and spans from the lateral side of the femur to the head of the fibula. Acting via the patella and patellar ligament, the quadriceps is a powerful muscle that extends the leg at the knee and provides support and stabilization for the knee joint.
