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Open-Access Journal
Minireviews
Luigi Valentino Berra, Andrea Di Rita, Federico Longhitano, Enrico Mailland, Paolo Reganati, Alessandro Frati, Antonio Santoro 
World J Orthop 12(12):961-969. Published online Dec 18, 2021. doi: 10.5312/wjo.v12.i12.961
Anil Thomas Oommen, Triplicane Dwarakanathan Hariharan, Viruthipadavil John Chandy, Pradeep Mathew Poonnoose, Arun Shankar A, Roncy Savio Kuruvilla, Jozy Timothy 
World J Orthop 12(12):970-982. Published online Dec 18, 2021. doi: 10.5312/wjo.v12.i12.970
Basic Study
Case Control Study
Giuseppe Solarino, Ilaria Bortone, Giovanni Vicenti, Davide Bizzoca, Michele Coviello, Giuseppe Maccagnano, Biagio Moretti, Fabio D'Angelo 
World J Orthop 12(12):991-1000. Published online Dec 18, 2021. doi: 10.5312/wjo.v12.i12.991
Retrospective Study
Prospective Study
Randomized Controlled Trial
Systematic Reviews