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Open-Access Journal
Editorial
Vasileios S Nikolaou, Dimitrios Chytas 
World J Orthop 12(10):727-731. Published online Oct 18, 2021. doi: 10.5312/wjo.v12.i10.727
Minireviews
Luigi Sabatini, Luca Barberis, Daniele Camazzola, Michele Centola, Marcello Capella, Alessandro Bistolfi, Marco Schiraldi, Alessandro Massè 
World J Orthop 12(10):732-742. Published online Oct 18, 2021. doi: 10.5312/wjo.v12.i10.732
Jennifer Sebghati, Pendar Khalili, Panagiotis Tsagkozis 
World J Orthop 12(10):743-750. Published online Oct 18, 2021. doi: 10.5312/wjo.v12.i10.743
Case Control Study
Sarah Mills, Aitor Ibarzábal-Gil, José M Martínez-Diez, Javier Pallarés-Sanmartín, Carlos Kalbakdij-Sánchez, Juan C Rubio-Suárez, Itsaso Losantos-García, E Carlos Rodríguez-Merchán 
World J Orthop 12(10):751-759. Published online Oct 18, 2021. doi: 10.5312/wjo.v12.i10.751
Retrospective Cohort Study
Andreas Saine Granlund, Michala Skovlund Sørensen, Claus Lindkær Jensen, Birthe Højlund Bech, Michael Mørk Petersen 
World J Orthop 12(10):760-767. Published online Oct 18, 2021. doi: 10.5312/wjo.v12.i10.760
Retrospective Study
Francesco Manfreda, Egzon Bufi, Enrico Francesco Florio, Paolo Ceccarini, Giuseppe Rinonapoli, Auro Caraffa, Pierluigi Antinolfi 
World J Orthop 12(10):768-780. Published online Oct 18, 2021. doi: 10.5312/wjo.v12.i10.768
Clinical Trials Study
Umut Varol, Alberto Sánchez-Mayoral-Martín, Juan Antonio Valera-Calero 
World J Orthop 12(10):781-790. Published online Oct 18, 2021. doi: 10.5312/wjo.v12.i10.781
Systematic Reviews
John G Kennedy, Mohammad T Azam, Eoghan T Hurley, Nathaniel P Mercer, James J Butler 
World J Orthop 12(10):791-801. Published online Oct 18, 2021. doi: 10.5312/wjo.v12.i10.791
Case Report
Muhammad J Abbas, Patrick Buckley, Sabin Shah, Kelechi R Okoroha 
World J Orthop 12(10):802-810. Published online Oct 18, 2021. doi: 10.5312/wjo.v12.i10.802
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