Shoulder Injuries in Baseball Players

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Most people don’t think of baseball as a high risk injury sport. Unlike football, hockey or boxing, baseball seems tame in comparison. While it’s true that baseball is not a high contact sport, a variety of injuries can occur to the players in virtually every part of the players body but most notably in the shoulder; some of these injuries can be career ending.
One of the most common injuries is due to overuse of the shoulder because of the repetitive motion required in pitching. Major shoulder injuries include bursitis, inflammation or tears of the tendons of the rotator cuff or rotator cuff tendonitis, shoulder instability, shoulder separation and labrum inflammation or tears. In order to understand the shoulder injuries of baseball players and especially of pitchers, you have to understand the motion involved in the act of throwing. Pitchers perform a wind up, cocking, acceleration and then deceleration and follow through when throwing the ball (see Figure 1) (source). These motions can be performed up to and over one hundred times per game depending on the age and ability of the athlete. Add to the amount of weekly practice time and you can see how this repetitive motion can cause problems over time. The anatomy of the shoulder joint allows the pitcher to generate velocity when throwing the ball. The shoulder joint fits loosely in the shoulder socket or glenoid (see Figure 2) (source). The further the player can bring the arm back raised away from the body (abduction), the more velocity the ball will have when released. Because of the lack of restriction in the shoulder joint a larger demand is placed on the soft shoulder tissue that is responsible for maintaining stability. These are the structures that eventual...

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...nge of external and internal motion while strengthening the muscles of the shoulder. When rest and physical therapy fail to correct an injury, surgery may be required. Common surgical procedures include labrum repairs, posterior capsular release, anterior capsular placation, or rotator cuff surgery. Many athletes are focusing on just one sport and training year round resulting in an increase in over-use injuries. It is recommended that athletes not play one sport year round to prevent overuse. Breaks should be taken and pitchers should not pitch on multiple teams.
The parent’s, coaches and players all have a responsibility in being alert to signs of injury and following guidelines to prevent injuries. Proper warm-up, rest periods and early detection are key to maintaining shoulder health and all symptoms should be gone before a player is returned to the field.

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