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The
Rotator
Cuff is
a group of muscles
that work in the shoulder
joint to keep the
humerus from popping
out. This makes the
Rotator
Cuff critical
for shoulder stability.
There
are four muscles in
the Rotator
Cuff: the
Teres
Minor, the
Infraspinatus, the
Supraspinatus and
the
Subscapularis
(not pictured - it
lies on the front
aspect of the scapula)
These
muscles all work together
to keep tension on
the humerus, locking
it into the shoulder
joint.
The
Rotator
Cuff is
one of the primary
areas of shoulder
trauma; when someone
has a shoulder injury,
chances are very good
that is related to
injury in the Rotator
Cuff.
This
trauma can be due
to sudden injury or
can be from overuse
in undesirable movement
patterns. The upright
row exercise is a
prime example of this
undesirable movement
pattern.
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