David Dejour is a surgeon working at the Lyon-Ortho-Clinic. His field of excellence is knee surgery – from sports medicine to degenerative pathology (osteoarthritis). He has published numerous articles on knee pathologies, particularly in relation femoral-patellar problems, ranging from patella dislocations to the onset of osteoarthritis. A consultant to various professional and amateur clubs on the management of sports joint pathologies, he is a member of several national   and international scientific societies (SOFCOT, SFA ESSKA, ISAKOS, AOSSM).Matteo Denti is Chief of the Sports Traumatology and Arthroscopic Surgery Unit at the Galeazzi Institute in Milan, Italy, and a Professor at the University of Milano Bicocca. His research Interests include open and arthroscopic surgery for treating disorders of the shoulder and knee. He is the author of over 120 scientific papers published both in Italian and international orthopaedic journals and is on theeditorial board or is a consultant reviewer of several journals. He is a member of the major societies and associations in the field of orthopaedics, such as ISAKOS, AOSSM, ESSKA, SIGASCOT, Herodicus Society, ACL Study Group). Elizaveta Kon is an Associate Professor at Humanitas University and Humanitas Research Hospital in Milan. Her research interests mainly focus on regenerative medicine, clinical and pre-clinical stem cell research, and the use of growth factors in orthopaedic disease. She has published over 140 articles in various scientific journals, many of which have received international recognition.Michael T. Hirschmann is Professor of Orthopaedic Surgery and Traumatology at University of Basel. He also serves as chief of Orthopaedic Surgery and Traumatology at Kantonsspital Baselland (Bruderholz, Liestal, Laufen). As head of knee surgery Prof. Hirschmann focuses on the treatment of complex knee injuries as well as the degenerative knee,including osteotomy and partial and total knee arthroplasty. He has been awarded more than 40 different national and international awards for his research activity. Prof. Hirschmann is deputy editor in chief of the KSSTA journal and serves on the editorial board of many others. He published more than 200 peer-reviewed articles and book chapters in these areas and has been an active member of numerous societies, such as  ESSKA, AAOS, ACL Study Group, AGA, DGOOC, DKG, EKA, EORS, GOTS and ISAKOS.Kristian Samuelsson is a Professor of Orthopaedics at the Institute of Clinical Sciences at Sahlgrenska Academy, University of Gothenburg. His current research reflects the vast variability of conditions, patients and tissues that orthopaedic surgeons encounter in their clinical practice. He has written over 140 scientific papers that have been published in various scientific journals (ResearchGate, PubMed).

• Chapter 1. Meniscus allografts: how to improve clinical results, limit chondral degeneration?.- Chapter 2. First-Time Patellar Dislocation: a Modern Treatment Strategy Patellar height as a factor.- Chapter 3. Operative Techniques Kinematic alignment .- Chapter 4. Medial opening wedge high tibial osteotomy.- Chapter 5. “Reverse arthroplasty VS other options” - Cases examples.- Chapter 6. How to avoid complications in hip arthroscopy.- Chapter 7. State of the art in ankle ligament surgery Repair vs. reconstruction. How to choose?.- Chapter 8. Mind your head.- Chapter 9. All the secrets of elbow instability.- Chapter 10. Basics of 2D Planning in Total Knee Replacement.- Chapter 11. Minimally invasive osteotomies around the knee.- Chapter 12. ACL Reconstruction using a flat Quadriceps Tendon graft without bone block.- Chapter 13. Void Filler in opening wedge osteotomies around the knee.- Chapter 14. Mobile-bearing Unis.- Chapter 15. Reconstructions with tibial slings. When and How?.- Chapter 16. Arthroscopic Capsulolabral Repair.- Chapter 17. Managing Cam FAI – Intermediate Hip Arthroscopy.- Chapter 18. An Update on Ankle Arthroscopy: Current Evidence and Practical Recommendations for 2020.- Chapter 19. ACL injury: Where are we now? Is prevention the key for all sports?.- Chapter 20. Allograft: biology, mechanics, integration, outcomes (with arthroscopy and cartilage committee according to the European Allograft Initiative).- Chapter 21. Surgical technique: what we would do in different situations - graft choice, one or two steps, fixation, associated lesions.- Chapter 22. Cell-Free Biomaterials – Indications And Borders.- Chapter 23. The rationale for using navigation for revision total knee arthroplasty.- Chapter 24. Pearls, Pitfalls and Complications (MPFL reconstruction).- Chapter 25. What to do if it goes wrong? Solutions after failure.- Chapter 26. Advanced Hip arthroscopy: What’s new?.- Chapter 27. Platt´s Syndrome: A Nerve Complication Associated with Ligament Injuries.- Chapter 28. Biologic Therapies In Orthopaedics And Sports Medicine.- Chapter 29. ARIF (Arthroscopic Reduction and Internal Fixation) around the Elbow.- Chapter 30. Intraarticular Osteotomies after Tibial Head Fractures.- Chapter 31. Preoperative planning.- Chapter 32. Inlay Patellofemoral Arthroplasty.- Chapter 33. Conservative Treatment Approaches of Patellar and Achilles Tendinopathies.- Chapter 34. Tendinopathy: From Basic Science to Return to Play.

David Dejour is a surgeon working at the Lyon-Ortho-Clinic. His field of excellence is knee surgery – from sports medicine to degenerative pathology (osteoarthritis). He has published numerous articles on knee pathologies, particularly in relation femoral-patellar problems, ranging from patella dislocations to the onset of osteoarthritis. A consultant to various professional and amateur clubs on the management of sports joint pathologies, he is a member of several national   and international scientific societies (SOFCOT, SFA ESSKA, ISAKOS, AOSSM).Matteo Denti is Chief of the Sports Traumatology and Arthroscopic Surgery Unit at the Galeazzi Institute in Milan, Italy, and a Professor at the University of Milano Bicocca. His research Interests include open and arthroscopic surgery for treating disorders of the shoulder and knee. He is the author of over 120 scientific papers published both in Italian and international orthopaedic journals and is on theeditorial board or is a consultant reviewer of several journals. He is a member of the major societies and associations in the field of orthopaedics, such as ISAKOS, AOSSM, ESSKA, SIGASCOT, Herodicus Society, ACL Study Group). Elizaveta Kon is an Associate Professor at Humanitas University and Humanitas Research Hospital in Milan. Her research interests mainly focus on regenerative medicine, clinical and pre-clinical stem cell research, and the use of growth factors in orthopaedic disease. She has published over 140 articles in various scientific journals, many of which have received international recognition.Michael T. Hirschmann is Professor of Orthopaedic Surgery and Traumatology at University of Basel. He also serves as chief of Orthopaedic Surgery and Traumatology at Kantonsspital Baselland (Bruderholz, Liestal, Laufen). As head of knee surgery Prof. Hirschmann focuses on the treatment of complex knee injuries as well as the degenerative knee,including osteotomy and partial and total knee arthroplasty. He has been awarded more than 40 different national and international awards for his research activity. Prof. Hirschmann is deputy editor in chief of the KSSTA journal and serves on the editorial board of many others. He published more than 200 peer-reviewed articles and book chapters in these areas and has been an active member of numerous societies, such as  ESSKA, AAOS, ACL Study Group, AGA, DGOOC, DKG, EKA, EORS, GOTS and ISAKOS.Kristian Samuelsson is a Professor of Orthopaedics at the Institute of Clinical Sciences at Sahlgrenska Academy, University of Gothenburg. His current research reflects the vast variability of conditions, patients and tissues that orthopaedic surgeons encounter in their clinical practice. He has written over 140 scientific papers that have been published in various scientific journals (ResearchGate, PubMed).

• Chapter 1. Meniscus allografts: how to improve clinical results, limit chondral degeneration?.- Chapter 2. First-Time Patellar Dislocation: a Modern Treatment Strategy Patellar height as a factor.- Chapter 3. Operative Techniques Kinematic alignment .- Chapter 4. Medial opening wedge high tibial osteotomy.- Chapter 5. “Reverse arthroplasty VS other options” - Cases examples.- Chapter 6. How to avoid complications in hip arthroscopy.- Chapter 7. State of the art in ankle ligament surgery Repair vs. reconstruction. How to choose?.- Chapter 8. Mind your head.- Chapter 9. All the secrets of elbow instability.- Chapter 10. Basics of 2D Planning in Total Knee Replacement.- Chapter 11. Minimally invasive osteotomies around the knee.- Chapter 12. ACL Reconstruction using a flat Quadriceps Tendon graft without bone block.- Chapter 13. Void Filler in opening wedge osteotomies around the knee.- Chapter 14. Mobile-bearing Unis.- Chapter 15. Reconstructions with tibial slings. When and How?.- Chapter 16. Arthroscopic Capsulolabral Repair.- Chapter 17. Managing Cam FAI – Intermediate Hip Arthroscopy.- Chapter 18. An Update on Ankle Arthroscopy: Current Evidence and Practical Recommendations for 2020.- Chapter 19. ACL injury: Where are we now? Is prevention the key for all sports?.- Chapter 20. Allograft: biology, mechanics, integration, outcomes (with arthroscopy and cartilage committee according to the European Allograft Initiative).- Chapter 21. Surgical technique: what we would do in different situations - graft choice, one or two steps, fixation, associated lesions.- Chapter 22. Cell-Free Biomaterials – Indications And Borders.- Chapter 23. The rationale for using navigation for revision total knee arthroplasty.- Chapter 24. Pearls, Pitfalls and Complications (MPFL reconstruction).- Chapter 25. What to do if it goes wrong? Solutions after failure.- Chapter 26. Advanced Hip arthroscopy: What’s new?.- Chapter 27. Platt´s Syndrome: A Nerve Complication Associated with Ligament Injuries.- Chapter 28. Biologic Therapies In Orthopaedics And Sports Medicine.- Chapter 29. ARIF (Arthroscopic Reduction and Internal Fixation) around the Elbow.- Chapter 30. Intraarticular Osteotomies after Tibial Head Fractures.- Chapter 31. Preoperative planning.- Chapter 32. Inlay Patellofemoral Arthroplasty.- Chapter 33. Conservative Treatment Approaches of Patellar and Achilles Tendinopathies.- Chapter 34. Tendinopathy: From Basic Science to Return to Play.

David Dejour is a surgeon working at the Lyon-Ortho-Clinic. His field of excellence is knee surgery – from sports medicine to degenerative pathology (osteoarthritis). He has published numerous articles on knee pathologies, particularly in relation femoral-patellar problems, ranging from patella dislocations to the onset of osteoarthritis. A consultant to various professional and amateur clubs on the management of sports joint pathologies, he is a member of several national   and international scientific societies (SOFCOT, SFA ESSKA, ISAKOS, AOSSM).Matteo Denti is Chief of the Sports Traumatology and Arthroscopic Surgery Unit at the Galeazzi Institute in Milan, Italy, and a Professor at the University of Milano Bicocca. His research Interests include open and arthroscopic surgery for treating disorders of the shoulder and knee. He is the author of over 120 scientific papers published both in Italian and international orthopaedic journals and is on theeditorial board or is a consultant reviewer of several journals. He is a member of the major societies and associations in the field of orthopaedics, such as ISAKOS, AOSSM, ESSKA, SIGASCOT, Herodicus Society, ACL Study Group). Elizaveta Kon is an Associate Professor at Humanitas University and Humanitas Research Hospital in Milan. Her research interests mainly focus on regenerative medicine, clinical and pre-clinical stem cell research, and the use of growth factors in orthopaedic disease. She has published over 140 articles in various scientific journals, many of which have received international recognition.Michael T. Hirschmann is Professor of Orthopaedic Surgery and Traumatology at University of Basel. He also serves as chief of Orthopaedic Surgery and Traumatology at Kantonsspital Baselland (Bruderholz, Liestal, Laufen). As head of knee surgery Prof. Hirschmann focuses on the treatment of complex knee injuries as well as the degenerative knee,including osteotomy and partial and total knee arthroplasty. He has been awarded more than 40 different national and international awards for his research activity. Prof. Hirschmann is deputy editor in chief of the KSSTA journal and serves on the editorial board of many others. He published more than 200 peer-reviewed articles and book chapters in these areas and has been an active member of numerous societies, such as  ESSKA, AAOS, ACL Study Group, AGA, DGOOC, DKG, EKA, EORS, GOTS and ISAKOS.Kristian Samuelsson is a Professor of Orthopaedics at the Institute of Clinical Sciences at Sahlgrenska Academy, University of Gothenburg. His current research reflects the vast variability of conditions, patients and tissues that orthopaedic surgeons encounter in their clinical practice. He has written over 140 scientific papers that have been published in various scientific journals (ResearchGate, PubMed).

• Chapter 1. Meniscus allografts: how to improve clinical results, limit chondral degeneration?.- Chapter 2. First-Time Patellar Dislocation: a Modern Treatment Strategy Patellar height as a factor.- Chapter 3. Operative Techniques Kinematic alignment .- Chapter 4. Medial opening wedge high tibial osteotomy.- Chapter 5. “Reverse arthroplasty VS other options” - Cases examples.- Chapter 6. How to avoid complications in hip arthroscopy.- Chapter 7. State of the art in ankle ligament surgery Repair vs. reconstruction. How to choose?.- Chapter 8. Mind your head.- Chapter 9. All the secrets of elbow instability.- Chapter 10. Basics of 2D Planning in Total Knee Replacement.- Chapter 11. Minimally invasive osteotomies around the knee.- Chapter 12. ACL Reconstruction using a flat Quadriceps Tendon graft without bone block.- Chapter 13. Void Filler in opening wedge osteotomies around the knee.- Chapter 14. Mobile-bearing Unis.- Chapter 15. Reconstructions with tibial slings. When and How?.- Chapter 16. Arthroscopic Capsulolabral Repair.- Chapter 17. Managing Cam FAI – Intermediate Hip Arthroscopy.- Chapter 18. An Update on Ankle Arthroscopy: Current Evidence and Practical Recommendations for 2020.- Chapter 19. ACL injury: Where are we now? Is prevention the key for all sports?.- Chapter 20. Allograft: biology, mechanics, integration, outcomes (with arthroscopy and cartilage committee according to the European Allograft Initiative).- Chapter 21. Surgical technique: what we would do in different situations - graft choice, one or two steps, fixation, associated lesions.- Chapter 22. Cell-Free Biomaterials – Indications And Borders.- Chapter 23. The rationale for using navigation for revision total knee arthroplasty.- Chapter 24. Pearls, Pitfalls and Complications (MPFL reconstruction).- Chapter 25. What to do if it goes wrong? Solutions after failure.- Chapter 26. Advanced Hip arthroscopy: What’s new?.- Chapter 27. Platt´s Syndrome: A Nerve Complication Associated with Ligament Injuries.- Chapter 28. Biologic Therapies In Orthopaedics And Sports Medicine.- Chapter 29. ARIF (Arthroscopic Reduction and Internal Fixation) around the Elbow.- Chapter 30. Intraarticular Osteotomies after Tibial Head Fractures.- Chapter 31. Preoperative planning.- Chapter 32. Inlay Patellofemoral Arthroplasty.- Chapter 33. Conservative Treatment Approaches of Patellar and Achilles Tendinopathies.- Chapter 34. Tendinopathy: From Basic Science to Return to Play.