Lars Engebretsen, MD, PhD
Professor, Orthopedic Clinic, University of Oslo
Professor Engebretsen is currently the Professor of Orthopedic Surgery at Oslo University Clinic and Head of Medical Sciences in the International Olympic Committee. Professor Engebretsen has published over 400 articles and book chapters, with a citation index (H-index) of 56. He is among the world’s most productive in clinical, epidemiological and basic science research in the areas of general sports medicine, knee ligaments, cartilage and prevention of sports injuries and illnesses. He has received research grants and awards from many agencies and associations, including the National Institutes of Health, the Norwegian Council for Research in Science and Humanities, the Norwegian Ministry of Health, the American Orthopedic Society of Sports Medicine (AOSSM) and the International Olympic Committee. He and his group have won several research awards around the world, and he was inducted into the AOSSM Hall of Fame in July 2015 and became an ESSKA Honorary member in 2016 and ISAKOS Honorary member in 2017. He received the Nordic Prize in Medicine in 2016.
Engebretsen is involved with three research groups: knee ligaments together with May Arna Risberg in Oslo and Robert LaPrade in Vail, Colorado, the Oslo Sports Trauma Research Center co-chaired with professor Roald Bahr and emphasizing prevention of injuries and diseases in sports, and the Oslo Cartilage Group, which encompasses research from the cell to rehab after surgery, involving molecular biologists, pathologists, radiologists, physiotherapists and orthopedic surgeons. In 1997, the cartilage group performed the first knee joint chondrocyte transplantation in Norway. Since then, the group has had major emphasis on translational research. The group works closely with the stem cell group led by Dr. Brinchmann and has optimized chondrocyte and stem cell cultivation while at the same time developing surgical techniques for implantation. Professor Engebretsen has been the President of the Norwegian Sports Medicine Society, the Scandinavian Foundation of Sports Medicine and European Society of Sports Traumatology and Arthroscopy (ESSKA). Dr Engebretsen is or has been a board member of many other societies including, but not limited to, the Norwegian Society of Sports Medicine, the Scandinavian Foundation of Medicine & Science in Sports, the International Society of Arthroscopy, Knee Surgery and Orthopaedic Sports Medicine (ISAKOS), the Orthopedic Research Society and International Knee Society. He is the Editor of the British Journal of Sports Medicine (IPHP edition), Associate Editor of Journal of Bone and Joint (the most prestigious journal in orthopedics) and on the editorial board of American Journal of Sports Medicine, Scandinavian Journal of Medicine and Science in Sports, Knee Surgery, Arthroscopy and Sports Traumatology, and The Knee and is a regular reviewer for all the major orthopedic and sports traumatology journals.
Selected Published Work
Knutsen G, Drogset JO, Engebretsen L, Grøntvedt T, Ludvigsen TC, Løken S, Solheim E, Strand T, Johansen O. A Randomized Multicenter Trial Comparing Autologous Chondrocyte Implantation with Microfracture: Long-Term Follow-up at 14 to 15 Years. J Bone Joint Surg Am. 2016 Aug 17;98(16):1332-9. doi: 10.2106/JBJS.15.01208.
Moatshe G, Slette EL, Engebretsen L, LaPrade RF. Intertunnel Relationships in the Tibia During Reconstruction of Multiple Knee Ligaments: How to Avoid Tunnel Convergence. Am J Sports Med. 2016 Jul 28. pii: 0363546516656371. [Epub ahead of print]
Kise NJ, Risberg MA, Stensrud S, Ranstam J, Engebretsen L, Roos EM. Exercise therapy versus arthroscopic partial meniscectomy for degenerative meniscal tear in middle aged patients: randomised controlled trial with two year follow-up. BMJ. 2016 Jul 20;354:i3740. doi: 10.1136/bmj.i3740.
Schon JM, Moatshe G, Brady AW, Serra Cruz R, Chahla J, Dornan GJ, Turnbull TL, Engebretsen L, LaPrade RF. Anatomic Anterolateral Ligament Reconstruction of the Knee Leads to Overconstraint at Any Fixation Angle. Am J Sports Med. 2016 Jul 12. pii: 0363546516652607. [Epub ahead of print]
LaPrade RF, Agel J, Baker J, Brenner JS, Cordasco FA, Côté J, Engebretsen L, Feeley BT, Gould D, Hainline B, Hewett T, Jayanthi N, Kocher MS, Myer GD, Nissen CW, Philippon MJ, Provencher MT. AOSSM Early Sport Specialization Consensus Statement. Orthop J Sports Med. 2016 Apr 28;4(4):2325967116644241. doi:10.1177/2325967116644241. eCollection 2016 Apr.
LaPrade CM, Foad A, Smith SD, Turnbull TL, Dornan GJ, Engebretsen L, Wijdicks CA, LaPrade RF. Biomechanical consequences of a nonanatomic posterior medial meniscal root repair. Am J Sports Med. 2015 Apr;43(4):912-20. doi: 10.1177/0363546514566191. Epub 2015 Jan 26.
Persson A, Kjellsen AB, Fjeldsgaard K, Engebretsen L, Espehaug B, Fevang JM. Registry data highlight increased revision rates for endobutton/biosure HA in ACL reconstruction with hamstring tendon autograft: a nationwide cohort study from the Norwegian Knee Ligament Registry, 2004-2013. Am J Sports Med. 2015 Sep;43(9):2182-8. doi:
Johnsen MB, Guddal MH, Småstuen MC, Moksnes H, Engebretsen L, Storheim K, Zwart JA. Sport Participation and the Risk of Anterior Cruciate Ligament Reconstruction in Adolescents: A Population-based Prospective Cohort Study (The Young-HUNT Study). Am J Sports Med. 2016 Apr 27. pii: 0363546516643807. [Epub ahead of print]
Madry H, Kon E, Condello V, Peretti GM, Steinwachs M, Seil R, Berruto M, Engebretsen L, Filardo G, Angele P. Early osteoarthritis of the knee. Knee Surg Sports Traumatol Arthrosc. 2016 Jun;24(6):1753-62. doi:10.1007/s00167-016-4068-3. Epub 2016 Mar 21. Review.
Risberg MA, Oiestad BE, Gunderson R, Aune AK, Engebretsen L, Culvenor A, Holm I. Changes in Knee Osteoarthritis, Symptoms, and Function After Anterior Cruciate Ligament Reconstruction: A 20-Year Prospective Follow-up Study. Am J Sports Med. 2016 May;44(5):1215-24. doi: 10.1177/0363546515626539. Epub 2016 Feb 24.
Cristián A. Fontboté, MD
MEDS Sports Medicine Clinic, Knee and Shoulder Sports Orthopaedics
Dr. Cristián Fontboté is an orthopaedic surgeon at the MEDS Sports Medicine Clinic in Santiago, Chile. He completed his medical degree and residency at the Pontificia Universidad Católica de Chile. Dr. Fontboté completed research fellowships at the University of Pittsburgh and the Steadman-Philippon Research Institute, as well as a traveling fellowship from Sociedad Latinoamericana de Rodilla y Traumatología Deportiva (SLARD) to the American Orthopaedic Society for Sports Medicine (AOSSM) in the US. From 2003 to 2011, Dr. Fontboté served as the orthopaedic team physician for Club Deportivo Universidad Católica, a professional men’s soccer team. He is a past president of the Sports Orthopaedic Committee for the Chilean Society of Orthopaedic Surgery (SCHOT). Dr. Fontboté’s special interests in the orthopaedic field include: sports injuries of knee and shoulder, soccer derived pathology, ACL, chondral and meniscal injuries in the knee, muscular injuries in sports, tendinopathies, rotator cuff, labral injuries, and instability of the shoulder. Dr. Fontboté is married with three children. He speaks Spanish, English, Portuguese, and Italian.
Selected Published Work
Steineman BD, Moulton SG, Haut Donahue TL, Fontboté CA, LaPrade CM, Cram TR, Dean CS, LaPrade RF. Overlap Between Anterior Cruciate Ligament and Anterolateral Meniscal Root Insertions: A Scanning Electron Microscopy Study. Am J Sports Med. 2017 Feb;45(2):362-368.
Moulton SG, Steineman BD, Haut Donahue TL, Fontboté CA, Cram TR, LaPrade RF. Direct versus indirect ACL femoral attachment fibres and their implications on ACL graft placement. Knee Surg Sports Traumatol Arthrosc. 2017 Jan;25(1):165-171.
Arendt EA, Fontboté CA, Rohr SR. Displacing lateral meniscus masquerading as patella dislocation. Knee Surg Sports Traumatol Arthrosc. 2014 Oct;22(10):2315-9.
Fontboté CA, Sell TC, Laudner KG, Haemmerle M, Allen CR, Margheritini F, Lephart SM, Harner CD. Neuromuscular and biomechanical adaptations of patients with isolated deficiency of the posterior cruciate ligament. Am J Sports Med. 2005 Jul;33(7):982-9.
Sekiya JK, Fontbote CA, Harner CD. Arthroscopically assisted retrograde fixation of patellar osteochondritis dissecans using fluoroscopic guidance: a case report and technical note. Arthroscopy. 2003 Sep;19(7):E1-7.
Pérez C, Rojas A, Baudrand R, González S, Fontboté C. [Tuberculosis bursitis: report of case]. Rev Med Chil. 2002 Mar;130(3):319-21. Spanish.
Samuel G. Moulton, Cristián Fontboté, Tyler Cram, Robert F. LaPrade. Posterolateral Reconstruction of the Knee: Surgical Technique with 2 Grafts. Operative Techniques in Sports Medicine. 2015;23(4):331-337.
Fontboté C, Nemtala UF, Contreras OO, Guerrero R. [Rosenberg projection for the radiological diagnosis of knee osteoarthritis]. Rev Med Chil. 2008 Jul;136(7):880-4. Spanish.