Little Leaguer's elbow occurs in young baseball players who throw
the ball too hard or too often (for example, more than 80 times twice a week).
The growing part of the elbow, called the growth centre (physis), widens and
enlarges a part of the elbow bone called the
medial
epicondyle of the humerus
. Muscles of the forearm that are used to throw
the ball constantly pull on the medial epicondyle during throwing and pull the
soft growth centre apart. In severe cases, a young player may tear through the
soft growth centre and detach the medial epicondyle from the upper arm
bone.
Symptoms include swelling and pain on the inside (medial) part of the
elbow. Arm motion may be decreased because of pain.
Treatment for mild to moderate cases of Little Leaguer's elbow
includes rest, coaching on the proper way to throw the ball, and physiotherapy.
Severe cases require surgical repair. Recovery may take 6 weeks to 6 months,
depending on the severity of the injury.