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Crist BD, Khazzam M, Murtha YM, Della Rocca GJ.Crist BD, et al. Among authors: della rocca gj.J Am Acad Orthop Surg. 2011 Oct;19(10):612-22. doi: 10.5435/00124635-201110000-00005.J Am Acad Orthop Surg. 2011.PMID: 21980026Review.