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Middlemore Hospital Auckland NEW ZEALAND Mark is one of New Zealand's most experienced orthopaedic knee surgeon. He has been practicing in Auckland for 22 years. He practices at Ascot Hospital with a satellite clinic on the North Shore. During this time he has treated over 25,000 patients with knee problems. Mark trained initially in New Zealand then worked under leading knee surgeons in the US, Canada, the UK and Australia. Mark is continually striving to improve patient care and surgical techniques for his patients knee problems. He does this by being actively involved in clinical research, surgical techniques and implant development. Mark has published many research articles, reviews and book chapters which he continues to present all over the world. Mark has pioneered a computer guided individualised Total Knee Replacement technique that has improved patient outcome and satisfaction and he has also developed arthroscopic knee techniques which he teaches globally. Mark is a member of four international societies who meet to pioneer and progress knee surgery. He is past president of the ACL Study Group which is an international group of the world's leading sports knee surgeons. He is on the Board of ISAKOS the International Knee Society and past chairman of the Arthroscopy and Sports Knee committees He is also member of the Herodicus & Magellan Societies. Mark is married to Angela and has two sons and a daughter. ISAKOS Active Member
2022 Knee Arthroplasty Forum Debate Video 10 minutes Not yet rated
2022 Knee Arthroplasty Forum Virtual Presentation Video 16 minutes Not yet rated
Knee Arthroplasty
2022 Knee Arthroplasty Forum Video 62 minutes Not yet rated
2022 Knee Arthroplasty Forum Debate Video 44 minutes Not yet rated
2022 Knee Arthroplasty Forum Virtual Presentation Video 7 minutes rating (2)
Alignment in Total Knee Arthroplasty Mark G. Clatworthy, FRACS, NEW ZEALANDIntroduction: Why this is the hottest topic in TKA in 2021 Mark G. Clatworthy, FRACS, NEW ZEALANDJohn Insall Got it Right 50 Years Ago. Release Ligaments to Balance the Extension Gap then Rotate the Femoral Component to Balance the Flexion Gap Nicolaas C. Budhiparama, MD, PhD (LUMC, NL), PhD (UGM, ID), FICS, Prof., INDONESIAFemur First Mechanical Alignment is the Way to Go. Most Surgeons Globally are Using This for a Reason Parag Sancheti, FRCS (Ed),MS(ORTH), DNB(ORTH), MCh(UK),Ph.D(UK), INDIAKinematic Alignment - Resurfacing the Pre-Arthitic Knee is the Answer Sebastien Lustig, MD, PhD, FRANCEPatient Specific Alignment - Its Not All About the Bone. Intraoperative Assessment of the Soft Tissue Envelope is a Game Changer Roland Becker, MD, PhD, Prof., GERMANY
2021 Congress Symposium Video 57 minutes group rating (12)
Mark G. Clatworthy, FRACS, NEW ZEALAND
Knee Arthroplasty Bones Osteoarthritis Arthritis Ligaments X-ray Evidence Based Medicine Outcome Studies
Introduction Karl Eriksson, MD, PhD, Prof., SWEDENACLR with Open Physes: How to Choose A Technique Kevin G. Shea, MD, UNITED STATESOsteochondritis Dissecans: State of the Art James Hui, MBBS, FRCS, FAMS, M.D. (Orthopaedic Surgery), SINGAPOREDiscoid Lateral Meniscus: Is There Any Role of Meniscectomy? Mark G. Clatworthy, FRACS, NEW ZEALANDThe First Time Patella Dislocator: Who Needs Surgery? Seth L. Sherman, MD, UNITED STATESTibial Spine Avulsions Fractures: Current Concepts Maria Tuca, MD, CHILEDiscussion
2021 Congress Symposium Video 77 minutes group rating (31)
Karl Eriksson, MD, PhD, Prof., SWEDEN Romain Seil, MD, Prof., LUXEMBOURG Sachin Ramchandra Tapasvi, MBBS, MS, DNB, FRCS, INDIA
Knee Instability Arthroscopy Repair / Reconstruction Patellofemoral Cartilage Ligaments Meniscus Osteoarthritis MRI
Introduction Pieter J. Erasmus, MBChB, MMed, FCS(Orth), SOUTH AFRICAAlignment in TKR: What Was Clear is Not Anymore Nicolaas C. Budhiparama, MD, PhD (LUMC, NL), PhD (UGM, ID), FICS, Prof., INDONESIAPatient Specific Ligament Guided Alignment - It’s Not All About the Bone Mark G. Clatworthy, FRACS, NEW ZEALANDPersonalized Alignment in TKA - How to Choose Kinematic or Mechanical Alignment Matt Lyons, FRACS, AUSTRALIACan Robots Help to Define and Hit the Target? Michael O'Malley, MD, UNITED STATESDiscussion
2021 Congress Symposium Video 58 minutes group rating (21)
Pieter J. Erasmus, MBChB, MMed, FCS(Orth), SOUTH AFRICA
Knee Arthroplasty Arthritis Bones Osteoarthritis Total Joint Replacement X-ray CT-Scan
Swedish Registry Magnus Forssblad, MD, PhD, SWEDENNew Zealand Registry Mark G. Clatworthy, FRACS, NEW ZEALANDNorwegian Registry Jon Olav Drogset, Prof., NORWAYDanish Registry Martin Lind, MD, PhD, Prof., DENMARKKaiser Registry Gregory B. Maletis, MD, UNITED STATESUK Registry Tim Spalding, FRCS(Orth), UNITED KINGDOMInternational ACL Survey Maria Tuca, MD, CHILEDiscussion
2021 Congress Symposium Video 68 minutes group rating (12)
Magnus Forssblad, MD, PhD, SWEDEN
Knee Orthopaedic Sports Medicine Instability Repair / Reconstruction Ligaments ACL Outcome Studies Epidemiology Autograft Allograft
2021 Congress Abstract Presentation Video 6 minutes Not yet rated
Simon W. Young, MD, FRACS, NEW ZEALAND
Knee Ligaments Instability Repair / Reconstruction ACL Epidemiology Evidence Based Medicine Outcome Studies
Me and My Robot: My Experience With My Chosen Robotic SystemMy Experience With the Rosa Francesco Benazzo, MD, Prof., ITALYMy Experience With the Navio / Cori Ran Schwarzkopf, UNITED STATESMy Experience With the Velys Mark G. Clatworthy, FRACS, NEW ZEALANDMy Experience With the Mako Fabio Catani, Prof., ITALYLive Discussion
Knee Arthroplasty Virtual Course Virtual Course Video 2021 Not yet rated
2021 Congress Abstract Presentation Video 9 minutes Not yet rated
Knee Osteoarthritis Arthroplasty Total Joint Replacement
Robotics in Knee ReplacementBenefits - What Robotic Surgery Offers V Nav and Conventional Mark G. Clatworthy, FRACS, NEW ZEALANDBenefits - What Robotic Surgery Offers V Nav and Conventional Mark G. Clatworthy, FRACS, NEW ZEALANDThe Difficulties of Starting to Use Robots - Barriers, Costs, Complications Willem M. van der Merwe, MBChB, FCS(SA)Ortho, SOUTH AFRICAThe Difficulties of Starting to Use Robots - Barriers, Costs, Complications Willem M. van der Merwe, MBChB, FCS(SA)Ortho, SOUTH AFRICASurgical Technique and Benefits of Rosa for TKA Andrew James Price, DPhil, FRCS(Orth), UNITED KINGDOMSurgical Technique and Benefits of Rosa for TKA Andrew James Price, DPhil, FRCS(Orth), UNITED KINGDOMSurgical Technique and Benefits of Mako for TKA David H. Figueroa, MD, CHILESurgical Technique and Benefits of Mako for TKA David H. Figueroa, MD, CHILESurgical Technique and Benefits of Navio for TKA Philippe Noel Neyret, MD, PhD, Prof., FRANCESurgical Technique and Benefits of Navio for TKA Philippe Noel Neyret, MD, PhD, Prof., FRANCESurgical Technique and Benefits of Think Surgical for TKA Jong-Keun Seon, MD, PhD, Prof, KOREA, REPUBLIC OFSurgical Technique and Benefits of Think Surgical for TKA Jong-Keun Seon, MD, PhD, Prof, KOREA, REPUBLIC OFRobotic Partial Knee Replacement: A Slam Dunk? Sebastien Lustig, MD, PhD, FRANCERobotic Partial Knee Replacement: A Slam Dunk? Sebastien Lustig, MD, PhD, FRANCEHow Did Using Robots Change My Practice: Patient Experience, Who Gets Robotic Surgery, Who Doesn’t and Why. David A. Parker, MBBS, BMedSc, FRACS, AUSTRALIAHow Did Using Robots Change My Practice: Patient Experience, Who Gets Robotic Surgery, Who Doesn’t and Why. David A. Parker, MBBS, BMedSc, FRACS, AUSTRALIAWhy I Still Prefer Nav - Benefits and Downsides of Robots Including Costs and Complications Christopher J. Vertullo, MBBS, PhD, FRACS(Orth), AUSTRALIARobotics in Uni and Total Knee Replacement: Data from the AOA National Joint Registry Stephen E. Graves, MBBS, DPhil, FRACS, FAOrthA, AUSTRALIARobotics in Uni and Total Knee Replacement: Data from the AOA National Joint Registry Stephen E. Graves, MBBS, DPhil, FRACS, FAOrthA, AUSTRALIA
ISAKOS Gratefully Acknowledges Robotics in Knee Replacement Webinar Sponsors DePuy Synthes and ZimmerBiomet
ISAKOS Webinars Webinar Video 2020 group rating (23)
Knee Total Joint Replacement Arthroplasty Economic Analysis Practice Management
Pediatric Knee Surgery: Current Concepts and ControversiesACL Reconstruction Skeletally Immature Patients: Don't Let the Growth Plates Scare You Romain Seil, MD, Prof., LUXEMBOURGACL Reconstruction Skeletally Immature Patients: Don't Let the Growth Plates Scare You Romain Seil, MD, Prof., LUXEMBOURGTibial Spine Avulsion Fractures: A New Look to an Old Enigma Maria Tuca, MD, CHILETibial Spine Avulsion Fractures: A New Look to an Old Enigma Maria Tuca, MD, CHILEPCL And Multiligament Knee Injuries: Fact Not Fiction! Kevin G. Shea, MD, UNITED STATESMeniscal Tears in Children: Fix Them Early and Fix Them Well Daniel W. Green, MD, MS, UNITED STATESMeniscal Tears in Children: Fix Them Early and Fix Them Well Daniel W. Green, MD, MS, UNITED STATESChondral and Osteochondral Injuries in Pediatric Patients: Kids Are Not “Little Adults” Seth L. Sherman, MD, UNITED STATES
Pediatric Knee Surgery Webinar Sponsored by Biotek
ISAKOS Webinars Webinar Video 2020 group rating (32)
Knee Ligaments Repair / Reconstruction Bones Meniscus ACL Dislocation Tears PCL
Introduction Nicolaas C. Budhiparama, MD, PhD (LUMC, NL), PhD (UGM, ID), FICS, Prof., INDONESIAUnrestricted Calipered Kinematic Alignment Restores Native Compartment Forces without Ligament Release with a Negligible Risk of Varus Component Failure at 10 Years Stephen M. Howell, MD, UNITED STATESAlignment in TKA: Why Should We Think Beyond the Neutral Mechanical Axis for Everybody? Mark G. Clatworthy, FRACS, NEW ZEALANDDiscussion Nicolaas C. Budhiparama, MD, PhD (LUMC, NL), PhD (UGM, ID), FICS, Prof., INDONESIAAdvantages of Neutral Alignment Shuichi Matsuda, MD, PhD, JAPANCoronal Alignment Is Not as Important as Flexion Stability and Rotational Alignment Simon Talbot, MBChB, FRACS, AUSTRALIA
2019 Congress Symposium Video 86 minutes Not yet rated
Nicolaas C. Budhiparama, MD, PhD (LUMC, NL), PhD (UGM, ID), FICS, Prof., INDONESIA
Knee Bones Osteoarthritis X-ray Arthroplasty Arthritis Total Joint Replacement Patellofemoral Tibio - Fibular Ligaments
Introduction Mark G. Clatworthy, FRACS, NEW ZEALANDComplex ACL and Revision ACL Cases Timothy S. Whitehead, MBBS, FRACS, AUSTRALIAPCL and Multiligament Injuries Brett A. Fritsch, MBBS BSc(Med), FRACS, FAOrthA, AUSTRALIAMeniscal Repair Cases Annunziato Amendola, MD, UNITED STATESOsteotomy Cases Christopher J. Vertullo, MBBS, PhD, FRACS(Orth), AUSTRALIAArticular Cartilage Repair Cases Seth L. Sherman, MD, UNITED STATESPatellofemoral Instability Cases Elizabeth A. Arendt, MD, UNITED STATESPatellofemoral Instability Cases Julian A. Feller, FRACS, FAOrthA, AUSTRALIAPatellofemoral Instability Cases Alan Getgood, MD, FRCS(Tr&Orth), DipSEM, CANADAPatellofemoral Instability Cases Petri J. Sillanpää, MD, PhD, FINLANDDiscussion Elizabeth A. Arendt, MD, UNITED STATES
2019 Congress Symposium Video 168 minutes group rating (3)
Knee Patellofemoral Instability Osteoarthritis Recurrent Subluxation and Dislocation Patellofemoral Osteoarthritis Osteotomy Cartilage Meniscus Repair / Reconstruction
ACL Tear with Open Physis: Conservative or Operative Treatment? Timo J. Järvelä, MD, PhD, FINLANDRationale for the Surgical Treatment of ACL Injuries in Open Physes Arturo Almazan, MD, MEXICOTransphyseal ACL Reconstruction in the Skeletally Immature Christopher J. Vertullo, MBBS, PhD, FRACS(Orth), AUSTRALIADoes Thicker Graft Reduce the Failure Rate in the Pediatric Knee? Mark G. Clatworthy, FRACS, NEW ZEALANDTransphyseal or Physeal-Sparing ACL Reconstruction for Skeletally Immature Patients Frederick Weitz, MD, FINLANDDiscussion Timo J. Järvelä, MD, PhD, FINLAND
2019 Congress Symposium Video 49 minutes group rating (9)
Timo J. Järvelä, MD, PhD, FINLAND
Knee Ligaments Instability ACL Practice Management Arthroscopy Meniscus Medial Lateral Trauma
2019 Congress Paper Presentation Video 4 minutes Not yet rated
2019 Congress Paper Presentation Video 6 minutes Not yet rated
Pediatric / Adolescent Knee Ligaments Instability ACL
Have Things Really Changed? John A. Bergfeld, MD, UNITED STATESWhat Is New in Surgical Technique? David A. Parker, MBBS, BMedSc, FRACS, AUSTRALIAThe Power (and Limitations) of ACL Registries Mark G. Clatworthy, FRACS, NEW ZEALANDBiologic Considerations for Return to Play: Can We Assess Graft Maturation? Ryosuke Kuroda, MD, PhD, JAPANWhere Are We with ACL Repair? Moises Cohen, MD, PhD, Prof., BRAZILPanel Discussion Julian A. Feller, FRACS, FAOrthA, AUSTRALIA
2019 Congress Symposium Video 57 minutes group rating (10)
John A. Bergfeld, MD, UNITED STATES Julian A. Feller, FRACS, FAOrthA, AUSTRALIA
Knee Ligaments ACL Instability Repair / Reconstruction Capsuloligamentous Complex Team Physician Evidence Based Medicine Allograft Single Bundle
2019 Congress Paper Abstract Web Not yet rated
Knee Ligaments Epidemiology Economic Analysis Evidence Based Medicine Outcome Studies Failed Repair / Reconstruction ACL
Osteotomy Combined with Cartilage Resurfacing Jacques Menetrey, Prof., SWITZERLANDOsteotomy Combined with Meniscal Allograft Transplantation Annunziato Amendola, MD, UNITED STATESOsteotomy in Cruciate Ligament-Deficient Patient Andreas B. Imhoff, MD, Prof. Emeritus, GERMANYTibial Osteotomies for the Valgus Knee Mark G. Clatworthy, FRACS, NEW ZEALANDDouble-Level Osteotomy: When and How Yong In, MD, PhD, KOREA, REPUBLIC OF
2019 Congress Symposium Video 50 minutes group rating (3)
Yong In, MD, PhD, KOREA, REPUBLIC OF
Knee X-ray Osteotomy Bones Cartilage Ligaments Meniscus Medial Lateral Osteoarthritis
Is Kinematically Aligned TKA a Good Alignment Option? Stephen M. Howell, MD, UNITED STATESCAS Anatomic Tibia Balanced Femur TKA. More accurate. Better outcome Mark G. Clatworthy, FRACS, NEW ZEALANDSuccessful long term outcomes in the mechanically aligned TKA William J. Long, MD, FRCSC, UNITED STATESOutcome of mechanically aligned Navigation-assisted TKA Eun-Kyoo Song, MD, PhD, Prof., KOREA, REPUBLIC OFDiscussion Maurilio Marcacci, MD, ITALY
2017 Congress Symposium Video 53 minutes group rating (13)
Maurilio Marcacci, MD, ITALY
Knee Cartilage Osteoarthritis Arthroplasty Total Joint Replacement Bones Outcome Studies Ligaments Arthritis X-ray
2017 Congress Lecture Video 36 minutes rating (2)
Elderly Knee Cartilage Osteoarthritis Arthritis Arthroplasty Total Joint Replacement
Indications, Preoperative Assessment & Correction Prescription Robert Litchfield, MD, FRCSC, CANADAMedial Opening Wedge HTO Technique David A. Parker, MBBS, BMedSc, FRACS, AUSTRALIALateral Closing Wedge HTO Technique Peter T. Myers, MBBS, FRACS, FAOrthA, AUSTRALIAOsteotomy for Instability, Including Management of Tibial Slope Mark G. Clatworthy, FRACS, NEW ZEALANDOutcomes & Future Directions in Osteotomy Eiichi Nakamura, MD, PhD, JAPANChondral Pathology: Which Lesions to Debride & Techniques of Debridement Christopher J. Vertullo, MBBS, PhD, FRACS(Orth), AUSTRALIAChondral Pathology: Techniques to Restore Joint Surface Sam Oussedik, FRCS, UNITED KINGDOMDiscussion Robert Litchfield, MD, FRCSC, CANADADiscussion Peter T. Myers, MBBS, FRACS, FAOrthA, AUSTRALIA
2015 Congress Symposium Video 70 minutes group rating (15)
Knee Cartilage Osteoarthritis Arthritis Osteotomy Bones X-ray Instability Arthroscopy Cartilage Treatment
Introduction Hermann O. Mayr, MD, Prof., GERMANYRestoring Natural Alignment Increases Function and Does Not Effect Longevity Mark G. Clatworthy, FRACS, NEW ZEALANDSports Activity with TKA in Patients Older than 60 Years Hermann O. Mayr, MD, Prof., GERMANYPossibilities and Limitations with Unicompartmental Knee Replacement in Patients Less than 60 Nanne P. Kort, MD, PhD, NETHERLANDSFailure Risk Factor of TKA (Japan Arthroplasty Registry) Hiromasa Miura, MD, PhD, Prof., JAPANDiscussion Mark G. Clatworthy, FRACS, NEW ZEALAND
2015 Congress Symposium Video 56 minutes group rating (7)
Mark G. Clatworthy, FRACS, NEW ZEALAND Hermann O. Mayr, MD, Prof., GERMANY
Knee Cartilage Osteoarthritis Arthritis Arthroplasty Total Joint Replacement Bones Physical Examination X-ray Exercise Physiology
Lateral Closing Wedge HTO Peter T. Myers, MBBS, FRACS, FAOrthA, AUSTRALIAMedial Opening Wedge HTO David A. Parker, MBBS, BMedSc, FRACS, AUSTRALIADiscussion David A. Parker, MBBS, BMedSc, FRACS, AUSTRALIA
2015 Congress Surgical Demonstration Video 61 minutes group rating (3)
Knee Bones Cartilage Tendon Osteoarthritis Arthritis Physical Examination X-ray MRI Arthroscopy
ISAKOS Newsletters ISAKOS Newsletter eBook 2015 Not yet rated
Sport Specific Population Knee Ligaments Biomechanics Single Bundle ACL
Importance of Muscle Strength in Patient Satisfaction Stability and ROM More Important than Alignment Willem M. van der Merwe, MBChB, FCS(SA)Ortho, SOUTH AFRICAAlgorithm to Make Sure we Have the Correct Diagnosis Before we Embark on Revision Surgery Julian A. Feller, FRACS, FAOrthA, AUSTRALIAWhat Results can we Tell our Patient to Expect After Revision TKR Masahiro Kurosaka, MD, JAPANUnexplained Pain After TKA: Complementary Tests and New Hypothesis Philippe Noel Neyret, MD, PhD, Prof., FRANCEThe Role of the PF Joint in Painful TKR and Revision Mark G. Clatworthy, FRACS, NEW ZEALANDDiscusion Willem M. van der Merwe, MBChB, FCS(SA)Ortho, SOUTH AFRICA
2013 Congress Symposium Video 2013 Not yet rated
Willem M. van der Merwe, MBChB, FCS(SA)Ortho, SOUTH AFRICA
Knee Cartilage Arthritis Arthroplasty Implant Bones Osteoarthritis
Introduction Mark G. Clatworthy, FRACS, NEW ZEALANDWhat is More Important Alignment or Stability in the Functional Outcome of TKR Willem M. van der Merwe, MBChB, FCS(SA)Ortho, SOUTH AFRICAMeasured Resection vs. Gap Balancing Tomoyuki Matsumoto, MD, PhD, JAPANKinematic Alignment Matthew Walker, MBChB, FRACS, NEW ZEALANDAre we Meeting Patient Expectation with TKA William J. Long, MD, FRCSC, UNITED STATESDiscussion Mark G. Clatworthy, FRACS, NEW ZEALAND
Knee Osteoarthritis Arthroplasty Total Joint Replacement Patellofemoral Bones Capsuloligamentous Complex Cartilage Ligaments Arthritis
Introduction Kevin P. Shea, MD, UNITED STATESCurrent Trends in Meniscal Repair Robert A. Arciero, MD, UNITED STATESISAKOS Classification on Meniscal Tears Mark G. Clatworthy, FRACS, NEW ZEALANDMeniscal Replacement Rene E. Verdonk, Prof em , MD, PhD, BELGIUMMeniscal Allograft ReplacementDiscussion Kevin P. Shea, MD, UNITED STATES
Kevin P. Shea, MD, UNITED STATES
Knee Meniscus Medial Lateral Tears Physical Examination X-ray MRI Sport Specific Injuries Transplantation
Osteoarthritis After ACL Injury & Reconstruction: Can We Prevent It? Constance R. Chu, MD, UNITED STATESTreatment of ACL Pathologic Laxity, Malalignment and Unicompartmental Osteoarthritis Mark G. Clatworthy, FRACS, NEW ZEALANDACL Reconstruction with Unicompartmental Knee Replacement Christopher A. Dodd, FRCS, UNITED KINGDOMDiscussion & Case Presentations Constance R. Chu, MD, UNITED STATES
2013 Congress Lecture Video 2013 Not yet rated
Knee Ligaments ACL Osteoarthritis Instability Stiff Joints Arthritis MRI Arthroplasty Arthroscopy
Patellofemoral Instability Pieter J. Erasmus, MBChB, MMed, FCS(Orth), SOUTH AFRICAPatellofemoral Instability David H. Dejour, MD, FRANCEDouble Bundle ACL Reconstruction Freddie H. Fu, MD, UNITED STATESExtraarticular Reconstruction Philippe Noel Neyret, MD, PhD, Prof., FRANCEMeniscal Root Tear Christopher D. Harner, MD, FAOA, UNITED STATES
2013 Congress Surgical Demonstration Video 2013 group rating (1)
Knee Patellofemoral Ligaments Instability ACL Meniscus Tears Double Bundle
ISAKOS Newsletters ISAKOS Newsletter PDF 2011 Not yet rated
Sport Specific Population Knee Ligaments Tears Repair / Reconstruction ACL
Knee Cartilage Ligaments Meniscus Medial Lateral Cartilage Injuries ACL PCL
ISAKOS Newsletters ISAKOS Newsletter PDF 2008 Not yet rated
Knee Ligaments Repair / Reconstruction ACL
ISAKOS Newsletters ISAKOS Newsletter PDF 2006 Not yet rated
Knee Ligaments CT-Scan Outcome Studies Arthroscopy Repair / Reconstruction Single Bundle ACL
Royalties received from ArthrexSpeaker for De Puy ArthrexPaid Consultant for De PuyStock received from Johnson & JohnsonSupport received from De Puy Arthrex Board of Directors member for Surgical Center, Orthoapedic Society