Guest Editor: Rui Yang (Montefiore Medical Center and Albert Einstein College of Medicine, USA)

Guest Editors: Alberto Grassi (II Clinic Rizzoli Orthopaedic Institute, Bologna, Italy) and Stefano Zaffagnini (II Clinic Rizzoli Orthopaedic Institute, Bologna, Italy)

Guest Editors: Sommer Hammoud (Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania, USA) and Robin V. West (Department of Orthopaedic Surgery, Georgetown University Medical Center, Washington DC, USA)

Guest Editors: Nemandra A Sandiford (Consultant, Joint Reconstruction Unit, Southland Teaching Hospital, Southern District Health Board, Invercargill, New Zealand), Massimo Franceschini (Istituto Ortopedico Gaetano Pini, Division of Orthopaedic Surgery, Milan, Italy) and Daniel Kendoff (Department of Orthopaedic Surgery, Helios ENDO-Klinik, Hamburg, Germany)

Guest Editor: Spencer Lake (Department of Mechanical Engineering & Materials Science, Washington University in St. Louis, St. Louis, MO, USA)

Guest Editor: Adam J. Seidl (Department of Orthopedic Surgery, University of Colorado, Aurora, CO, USA)

Guest Editors: Kurt R. Weiss (Division of Musculoskeletal Oncology, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA) and Mitchell S. Fourman (Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA)

Guest Editors: George Grammatopoulos (Division of Orthopaedic Surgery, The Ottawa Hospital, Ottawa, Canada) and Paul E. Beaulé (Division of Orthopaedic Surgery, The Ottawa Hospital, Ottawa, Canada)

Guest Editors: Vinod K. Panchbhavi (Department of Orthopedic Surgery, The University of Texas Medical Branch, Texas, USA) and Maninder Shah Singh (Foot & Ankle Services, Indian Spinal Injuries Centre, New Delhi, India)

The "Meet the Professor" series features interviews with the global Key Opinion Leaders, providing a window into the new developments, breakthroughs, and achievements in the interviewees’ professional fields, both clinically and academically.

Guest Editor: Adnan Saithna (Professor of Orthopedic Surgery, Adjunct Clinical Faculty, Kansas City University of Medicine, Kansas City, Missouri, USA)

Guest Editor: Nikolaos Kourkoumelis (Department of Medical Physics, School of Health Sciences, University of Ioannina, Ioannina, Greece)

Guest Editor: Yuji Uchio (Department of Orthopaedics, Shimane University, School of Medicine, Shimane, Japan)

Guest Editor: Takeshi Muneta (National Hospital Organization Disaster Medical Center, and Tokyo Medical and Dental University, Tokyo, Japan)

Guest Editors: Tao Ji (Musculoskeletal Tumor Center, Beijing Key Laboratory for Musculoskeletal Tumors, People’s Hospital, Peking University, Beijing, China), Wei Guo (Musculoskeletal Tumor Center, Beijing Key Laboratory for Musculoskeletal Tumors, People’s Hospital, Peking University, Beijing, China), Eric R. Henderson (Dartmouth Orthopaedic Surgery, Sarcoma & Connective Tissue Oncology Program, Norris Cotton Cancer Center, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA) and Paul C. Jutte (Department of Orthopaedic Surgery, University of Groningen, University Medical Center, Groningen, The Netherlands)

Guest Editor: Young Lae Moon (Department of Orthopaedic, Chosun University Hospital, Gwangju, Korea)

Guest Editor: Joseph A. Abboud (Department of Orthopaedic Surgery, Sidney Kimmel School of Medicine, Thomas Jefferson University, Philadelphia, PA, USA; Department of Shoulder and Elbow, The Rothman Institute, Philadelphia, PA, USA)

Guest Editors: Camilo Partezani Helito (Hospital Sírio Libanês, São Paulo, Brazil; Grupo de Joelho, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil) and Jorge Chahla (Rush University Hospital, Midwest Orthopaedics at Rush, Chicago, IL, USA)

Guest Editors: Vicente Sanchis-Alfonso (Department of Orthopaedic Surgery, Hospital Arnau de Vilanova, Valencia, Spain) and Scott F. Dye (Department of Orthopaedic Surgery, University of California San Francisco, San Francisco, California, USA)

Guest Editors: Olufemi R. Ayeni (Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada; Medical Centre, McMaster University, Hamilton, Ontario, Canada)and Ryan P. Coughlin (Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada)

Guest Editor: Charlie C. Yang (Colorado Joint Replacement, Porter Adventist Hospital, Denver, CO, USA)

Guest Editors: Alexis Chiang Colvin (Associate Professor of Sports Medicine, The Leni and Peter W. May Department of Orthopaedic Surgery, The Mount Sinai Hospital, New York, USA) and Diana Patterson (PGY-5, The Leni and Peter W. May Department of Orthopaedic Surgery, The Mount Sinai Hospital, New York, USA)

Guest Editors: Albert Lin (University of Pittsburgh Medical Center, Pittsburgh, USA) and Jason J. Shin (University of Saskatchewan, Saskatoon, Canada)

Guest Editor: Luigi Sabatini (Turin University, CTO Hospital Turin, Turin, Italy)

Guest Editors: Freddie H. Fu (Distinguished Service Professor, University of Pittsburgh, Pittsburgh, PA, USA; David Silver Professor and Chairman, Department of Orthopaedic Surgery, Head Team Physician, University of Pittsburgh Athletics, Pittsburgh, PA, USA) and Jeremy M. Burnham (University of Pittsburgh Medical Center, USA)