I had no idea when I wrote this article that it would single handedly raise the stock and notoriety of me as a bodybuilding writer. The other day while I was working on another website and someone asked me what happened to that article I wrote on shoulder injury? 

Right then it hit me other people were getting hits and links for an article that I originally wrote.  Now that I have www.Fire-Iron-Online.com I can start once again writing articles that are honest and informative. So here is a complete copy of my original article "Shoulder Pain the Cause"

This article addresses the causes of shoulder injury a common problem to athletes that participate in bodybuilding weightlifting and other weight assisted sports.

Most people think that the shoulder is a ball and socket connection much like the hip joint; nothing could be further from the truth. The shoulder is made up of two main bones the humerus the large bone in the upper arm, and the scapula the fan shaped bone of the upper back. The humerus is covered by cartilage which in a cartilage covered semi cup called the glenoid. This and the top boney extensions of the scapula make up a very fragile ball joint.
 

When its time to evaluate the shoulder muscles, most people we think of the shoulder muscles we think of the deltoids, and the trapezius. However the shoulder is made up of other lesser seen muscles whose development is essential to health shoulder joints. These lesser muscles are the Supraspinatus, Infraspinatus and the teres major, minor better know as the rotor cuff muscles. Below is the action of these muscles, there purpose, origin and insertions:

·  Supraspinatus: This muscle has an origin at the top of the scapula and an insertion at the top or superior facet of the humerus. This muscle initiates and assists the deltoid in the abduction (rising) of the arm.

·  Infraspinatus: this fan shaped muscle has it origin at the middle of the scapula it covers about 90 percent of the scapula and insert at Middle facet on greater tuberosity of humerus (the larger tube shape connection of the upper arm at the ball shaped top). The purpose of this muscle is to lateral lift the arm help to hold the humeral head in the glenoid cavity of the scapula

·  Teres Major: this muscle has it origin at the lower inside of the scapula and insertion is at the middle of the opposite side of the humerus, just below the humeral head. The purpose of this muscle is to abduct and rotate the arm across the body, as if your elbow was pointing down and just your forearm rotated across your body

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