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Originally Posted by JugglingReferee
The arm bones are composed of the radius (thumb side) and ulna (pinky side) for the forearm and the humerous in the upper arm. The humerous' connected to the shoulder, which I think is directly connected to the clavical.
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As you can see, the head of the humerous is actually connected to the Scapula by resting in the Glenoid. The connection is made by muscle, ligaments and tendons. The Clavical and the Acromion are the other bones that makes up the bones of the shoulder.
The shoulder is the most complicated joint in the body, as when you raise your arm above your head (say, when calling a foul
) the humerous may actually pull away slightly from the Glenoid. It's really pretty amazing. And it makes no sense.
