The medical procedure known as "Tommy John surgery" has always been considered a last resort: When a Major League Baseball pitcher suffers a career-threatening elbow injury, an elbow ligament can be replaced with a tendon from elsewhere in the body, possibly prolonging the pitcher's career.
But now something shocking is happening: Some parents are asking doctors to give their kids Tommy John surgery even when they're not injured, simply because they think it'll give their kids stronger throwing arms.
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