• Protect your arm with anatomically superior
  mechanics.
• Secrets to minimizing elbow
  & shoulder injuries.
• Understand WHY your
  arm hurts.
• Learn to throw HARD every
  day, pain free.
• Maximize your fastball
  velocity.
• Add deception to your arsenal.
• Learn how to throw pitches that break harder and move more.
• Get ripped with detailed, high intensity pitching-specific workouts
• Learn Gold Glove fielding and mental skills for pitchers.
• Learn pitching elbow &
  shoulder anatomy.

Shoulder Skeletal Structure & Joints
(See enhanced shoulder x-ray at left)

Commonly called the shoulder joint complex or shoulder girdle, the shoulder is really four joints in one (though some anatomists do not consider #4 a joint):

1 Glenohumeral joint: 'ball-and-socket' joint between the upper arm and the shoulder blade;

2 Acromio-clavicular joint: joint between the outer end of the collarbone and the shoulder blade;

3 Sterno-clavicular joint: joint between the inner end of the collarbone and the sternum/breastbone, and;

4 Scapulo-thoracic joint: conceptual joint formed by the shoulder blade's undersurface and the chest wall (not shown in the illustration).

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