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Open-Access Journal
Review
Christine C Johnson, Daniel J Johnson, Joseph N Liu, Joshua S Dines, David M Dines, Lawrence V Gulotta, Grant H Garcia 
World J Orthop 7(9):519-526. Published online Sep 18, 2016. doi: 10.5312/wjo.v7.i9.519
Minireviews
Georgios K Triantafyllopoulos, Vasileios Soranoglou, Stavros G Memtsoudis, Lazaros A Poultsides 
World J Orthop 7(9):546-552. Published online Sep 18, 2016. doi: 10.5312/wjo.v7.i9.546
Retrospective Cohort Study
Observational Study
Prospective Study
Sotirios Christodoulou, Georgios I Drosos, Athanasios Ververidis, Antonios Galanos, George Anastassopoulos, Konstantinos Kazakos 
World J Orthop 7(9):577-583. Published online Sep 18, 2016. doi: 10.5312/wjo.v7.i9.577
Systematic Reviews
Berardo Di Matteo, Markus Loibl, Luca Andriolo, Giuseppe Filardo, Johannes Zellner, Matthias Koch, Peter Angele 
World J Orthop 7(9):592-603. Published online Sep 18, 2016. doi: 10.5312/wjo.v7.i9.592
Case Report