Medically reviewed by Jennifer Steinhoff, MD The humerus is your upper arm bone. It is the longest bone in the upper part of ...

Dear Reader: Your rotator cuff is the group of muscles and tendons that help anchor the bone of the upper arm ... rotator cuff hold the rounded end of the humerus -- that’s the ball -- in ...

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 underarm throw or bowl in rounders. Flexion of the hip ...