https://i.ytimg.com/vi/f3JWNIkwBZ8/hqdefault.jpg When animating a bending arm,the mesh deformation around the elbow doesn’t look,most of the times,realistic enough In this video tutorial we present a workaround through using “vertex shape keys” (also called “corrective shape keys” ) for re-shaping the bent arm and ,therefore,giving it a nice,realistic deformation source