ANATOMY
'(<a href="http://www.j-archive.com/media/2007-11-05_DJ_18.jpg" target="_blank">Cheryl of the Clue Crew plays with a skeleton.</a>) The bones of the shoulder--the clavicle, the scapula & the humerus--form this type of joint, which is more susceptible to injury because it <a href="http://www.j-archive.com/media/2007-11-05_DJ_18a.jpg" target="_blank">moves in multiple directions</a>'
a ball and socket