Shoulder Problems

  We also expect a lot from our shoulders -- sometimes too much.  The
shoulder is a complex arrangement of bones, muscles, tendons and
ligaments.  As a joint, it serves as an excellent brace for the arm, but it
is not a good anchor.  Its very flexibility makes it prone to both sudden
injury and chronic wear and tear.
  Anyone can suffer from shoulder problems before the age of 25, but
the majority of problems occur later in life.  People who use their shoulders
a lot at work are particularly prone to problems.  Next on the list are the weekend athletes, who are not fully prepared for the strenuous activities
they have undertaken.
  Like a machine that has many moving parts, the shoulders are subject
to various problems and breakdowns.  When one part fails and , in effect, shuts down, it can affect other parts, and you find yourself avoiding even
the simplest daily activities.
  Like a machine that has many moving parts, the shoulders are subject
to various problems and breakdowns.  When one part fails and, in effect, shuts down, it can affect other parts, and you may find yourself avoiding
even the simplest daily activities.  Of course, any joint in the body that
stays inactive too long will become stiff and difficult to move.  The shoulder
is more prone to this type of problem than any other joint with the exception of the elbow.
  Between the acromion [see illustration below] and the rotator cuff lies
the bursa, which cushions the tendon from the bone.  This small sac,
filled with a fluid having the approximate consistency of motor oil, is a
common trouble spot.  Another is the many nerves and tendons that pass through or near the shoulder joint.