The following story is a classic example of how the pelvis dictates the biomechanics of the shoulder girdle. The problem with this story is that the cause of the repeated “hip issues” was not resolved, in my opinion. Ask the question, why does someone so young get repeated infections in the hip? As the story details there was a surgery done for the hip labrum but how did he tear the hip labrum? The are several possibilities but the takeaway from this article is that poor biomechanics of the pelvis affected the throwing mechanics. A surgery for the hip labrum may eliminate the cause of pain in the hip but it does not change the biomechanics of the pelvis. The surgery for the elbow addressed the direct tear but it didn’t address the imbalance in the upper limb-throwing arm, but in professional baseball there is always another guy to choose from… so why bother?
http://www.baseballprospectus.com/a/20681