10 weeks (Jan-Mar) of high level instruction and conditioning throughout the winter to get ready for the spring season. A program that gradually increases the number of pitches per week is used leading up to the spring season. Most youth pitchers don't properly train for the rigors of the spring season. Improper mechanics can exacerbate long term problems. See below position from the American Academy of Pediatrics: Click for AAP Website Link
The term "Little League elbow" refers to medial elbow pain attributable to throwing by skeletally immature athletes. Pitchers are most likely to be affected by this condition, but it can occur in other positions associated with frequent and forceful throwing. The throwing motion creates traction forces on the medial portion of the elbow and compression forces on the lateral portion of the elbow. The medial traction forces can cause separation or avulsion of the apophysis from the medial epicondyle of the humerus and overuse injury to the common flexor tendon. The compression forces laterally can cause collapse and deformity of the distal humerus, also known as osteochondritis dissecans of the capitulum of the humerus. Early recognition of the symptoms is important to avoid chronic elbow pain, instability, and arthritis.
A preseason conditioning program that includes strengthening the rotator cuff and the shoulder-stabilizing muscles also may help reduce throwing injuries. Instruction on proper pitching mechanics is another way to help prevent serious overuse throwing injuries. Finally, allowing time during the early part of the season to gradually increase the amount and intensity of throwing may allow young arms a better opportunity to adapt to the stresses of throwing.
