connects your upper arm bone (humerus) to the bone in your forearm (ulna), which helps stabilize the inner side of your elbow joint. However, a sprain can occur when repetitive motions or an acute ...

Ball and socket joints also allow flexion and extension. Flexion of the shoulder joint occurs when the humerus (upper arm) moves forwards from the rest of the body, which happens at the end of an ...

Muscles which move the knee are quadriceps and hamstrings. Ball and socket joint. Articulating bones are humerus and scapula (the clavicle is not part of the shoulder joint). Allows a great range ...