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Garrett Richards is walking proof stem cells might save damaged elbows<p>As author of <i>The Arm</i>, Jeff Passan is the expert on all things elbow and shoulder in the baseball world.<p>Passan’s latest for Yahoo! Sports profiles Los Angeles Angels of Anaheim pitcher Garrett Richards, who is attempting to come …

Read more at CBS Sports: http://www.cbssports.com/mlb/news/heres-how-stem-cells-could-be-the-answer-to-baseballs-tommy-john-surgery-problem/