Thursday, March 6, 2014

Little League Overuse Throwing Injuries

As youth participation in baseball continues to remain popular, the occurrence of upper extremity overuse injuries continues to increase.  Further, there is an increasing trend for youngsters to specialize in and train year round for a single sport at an early age.  Such a high level of intensity and demand for advanced athletic skills throughout the years of skeletal growth have raised concerns about risk and severity of injury in young athletes.

Young athletes are risk for unique types of overuse injuries due to the presence of multiple growth plates throughout the entire skeleton.  These growth plates are composed of cartilage, which is softer and more vulnerable to injury than more mature bones.  In the upper extremity, both the upper arm bone called the humerus and the bones of the forearm called the radius and ulna have multiple growth plates close to the shoulder and elbow joints that are prone to overuse injuries in overhead athletes, such as baseball players. Repetitive activities, such as throwing baseballs, can overload the susceptible growth plates of the immature upper extremity and result in growth plate irritation, inflammation, and pain.  If improperly treated, growth plate disturbance as a result of overuse injury may lead to irreversible alterations in normal bone growth patterns, which can lead to altered joint mechanics.  This can ultimately lead to significant long-term pain and disability.

Young baseball players participating in repetitive overhead throwing, such as pitchers, are at risk for growth plate injuries around the shoulder and elbow.  The overuse condition called “Little League Shoulder”, also know as proximal humeral epiphysitis, results in pain in the upper arm or shoulder.  While the overuse condition call “Little League Elbow” results in pain in the elbow.  Children with these injuries will have shoulder or elbow pain when throwing.  These athletes may also be sore for a few days after participation and may notice loss of throwing velocity or control.  Further, swelling and tenderness around the shoulder or elbow may be present.  Such injuries may be a source of discomfort and time lost from training or competition.

Severe pain around a joint may be a symptom of growth plate injury, which may require prompt evaluation and treatment by a physician.  Orthopedic physicians diagnose these injuries by listening to the history and performing a physical examination.  Further, x-rays may be helpful to demonstrate widening or a break in the growth plate.  The most effective treatment for “Little League Shoulder” and “Little League Elbow” is rest from throwing so the growth plate can heal.  The addition of physical therapy may also help improve the strength of the shoulder and elbow and prevent re-injury. A young athlete should never be expected to or allowed to “throw through the pain,” as such mistreatment may lead to a limited throwing career and chronic pain as an adult.  An athlete typically can return throwing again once they have full strength and full range of motion of the shoulder or elbow.

Often times, many coaches of youth sports are enthusiastic and well meaning volunteers, yet they are also typically uninformed about the growth and development of children and appropriate injury preventative strategies.  Therefore, it is critical for the caregivers of youth participating in athletics to educate themselves and the athlete about potential growth plate injury and precautionary tactics.  Ultimately, the best way to prevent “Little League Shoulder” and “Little League Elbow” is to follow recommended guidelines for appropriate pitch count limits and proper rest between pitching appearances.  Please refer below for further preventative tips and pitch count recommendations.
Tips for Parents:
-emphasize the benefits of year-round physical fitness, while also emphasizing the importance of appropriate rest and training variety
-allow your child to pitch in only one league in a single season and play baseball only two seasons of the year
-do not allow your child to play through pain
-consult an orthopedic physician if your child’s throwing injuries are not relieved by four days of rest and ice
Tips for Pitchers:
-appropriately warm up before all athletic participation and throwing
-remain physically fit all year and incorporate a supervised resistance training program that focuses on total body fitness, including leg and core strengthening
-do not practice pitching after the game
-rest your arm for at least 24 hours after pitching
Pitch Count Recommendations:
9- to 10-Year Old Pitcher:
50 pitches a game
75 pitches a week
1,000 pitches a season
2,000 pitches a year
11- to 12-Year Old Pitcher:
75 pitches a game
 100 pitches a week
 1,000 pitches a season
 3,000 pitches a year
13- to 15-Year Old Pitcher:
 75 pitches a game
 125 pitches a week
 1,000 pitches a season
 3,000 pitches a year
16-Year Old or Older Pitcher:

Needs an individualized program based on skill level and input from trainers, coaches, and an orthopaedic physician

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