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LifeArt©
The Rotator Cuff is the capsule that holds the shoulder
together. It is made up of fibrous tissue that
surrounds the head of the upper arm as it fits into the shoulder
joint. As you can see the upper part of the arm actually fits
into a joint that is flat, instead of cup shaped. For this
reason the muscles and the ligaments holding the shoulder
together must be balanced to keep the arm in the shoulder joint,
while still giving the shoulder the great rotation that it
normally has. The capsule is made of fibrous tissue that comes
together from all the tendons leading from the muscles.
The rotator cuff is not seen in these photo illustrations,
but it's place of attachment is identified.
In the picture below notice the AC
Joint. This is a point of attachment between the
collar bone (clavicle) and the shoulder blade as it comes
projects forward. The AC joint is kept together by
ligaments that bridge the joint. When and injury occurs
such as a fall, or a collision, the ligaments can become torn,
resulting in the end of the collar bone (clavicle) raising up,
as known as a shoulder separation. (not to be confused with a
shoulder dislocation) This creates a less supported
shoulder structure, and is also painful condition.
Sometimes a complete 3 degree tear of the AC joint ligaments
will need to be surgically wired together to restore the proper
positioning.
LifeArt©
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