RT Journal A1 Calhoun, Jason H. T1 You Have to Crawl Before You WalkCommentary on an article by Bernhard Kessler, MD, et al.: “Risk Factors for Periprosthetic Ankle Joint Infection: A Case-Control Study” JF The Journal of Bone & Joint Surgery JO The Journal of Bone & Joint Surgery YR 2012 FD October 17 VO 94 IS 20 SP e155 1 OP 2 DO 10.2106/JBJS.L.00957 UL http://dx.doi.org/10.2106/JBJS.L.00957 AB