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Open-Access Journal
Opinion Review
Sumon Nandi 
World J Orthop 12(11):811-815. Published online Nov 18, 2021. doi: 10.5312/wjo.v12.i11.811
Case Control Study
Retrospective Cohort Study
Michael Patetta, Benjamin Mayo, Omar Zaki Martini, Breanna Sullivan, Leonard Onsen, Mark Hutchinson 
World J Orthop 12(11):833-841. Published online Nov 18, 2021. doi: 10.5312/wjo.v12.i11.833
Retrospective Study
Sandi Caus, Hailee Reist, Christopher Bernard, Michael Blankstein, Nathaniel J Nelms 
World J Orthop 12(11):850-858. Published online Nov 18, 2021. doi: 10.5312/wjo.v12.i11.850
Rajpreet Sahemey, Thomas S Moores, Hannah Meacher, Bishoy Youssef, Shehzaad Khan, Christopher R Evans 
World J Orthop 12(11):859-866. Published online Nov 18, 2021. doi: 10.5312/wjo.v12.i11.859
Ahmet Uğur Turhan, Sezgin Açıl, Orkun Gül, Kerim Öner, Ahmet Emin Okutan, Muhammet Salih Ayas 
World J Orthop 12(11):867-876. Published online Nov 18, 2021. doi: 10.5312/wjo.v12.i11.867
Clinical Trials Study
George Macheras, Sophia Stasi, Michail Sarantis, Athanasios Triantafyllou, Dimitrios Tzefronis, Stamatios A Papadakis 
World J Orthop 12(11):877-890. Published online Nov 18, 2021. doi: 10.5312/wjo.v12.i11.877
Observational Study
Mohammad M Alzahrani, Saad M Alqahtani, David Pichora, Ryan Bicknell 
World J Orthop 12(11):891-898. Published online Nov 18, 2021. doi: 10.5312/wjo.v12.i11.891
Evidence-Based Medicine
Nikhil Crain, Chun-Yuan Qiu, Stephen Moy, Shawn Thomas, Vu Thuy Nguyen, Mijin Lee-Brown, Diana Laplace, Jennifer Naughton, John Morkos, Vimal Desai 
World J Orthop 12(11):899-908. Published online Nov 18, 2021. doi: 10.5312/wjo.v12.i11.899
Systematic Reviews
Mohamed Hafez, Nicolas Nicolaou, Amaka C Offiah, Stephen Giles, Sanjeev Madan, James A Fernandes 
World J Orthop 12(11):909-919. Published online Nov 18, 2021. doi: 10.5312/wjo.v12.i11.909
Meta-Analysis
Cristhopher Stoffel, Bruno Eltz, Mauro José Salles 
World J Orthop 12(11):920-930. Published online Nov 18, 2021. doi: 10.5312/wjo.v12.i11.920
Case Report
James Robinson, Kevin P Smidt, Garrett Houk, Janay McKie, R Shane Barton, Patrick Massey 
World J Orthop 12(11):931-937. Published online Nov 18, 2021. doi: 10.5312/wjo.v12.i11.931
Cheng Hsun Yang, Feng-Chih Kuo, Chen-Hsiang Lee 
World J Orthop 12(11):938-944. Published online Nov 18, 2021. doi: 10.5312/wjo.v12.i11.938
Koichi Nakamura, Kunihiro Asanuma, Akira Shimamoto, Shinji Kaneda, Keisuke Yoshida, Yumi Matsuyama, Tomohito Hagi, Tomoki Nakamura, Motoshi Takao, Akihiro Sudo 
World J Orthop 12(11):945-953. Published online Nov 18, 2021. doi: 10.5312/wjo.v12.i11.945
Francesco Roberto Evola, Giovanni Francesco Di Fede, Santo Bonanno, Giuseppe Evola, Maria Elena Cucuzza 
World J Orthop 12(11):954-960. Published online Nov 18, 2021. doi: 10.5312/wjo.v12.i11.954
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