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Dr Mark Clatworthy
Dr Mark Clatworthy Orthopaedic Knee Surgeon

Mark is an orthopaedic knee specialist who has been practicing in Auckland for twelve years. He practices at Ascot and Middlemore Hospital with satellite clinics on the North Shore and in West Auckland.

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 and has published many research articles, reviews and book chapters which he continues to present all over the world. He has been involved in pioneering computer guided knee surgery and is developing arthroscopic and knee replacements techniques which he teaches globally. He is a member of four societies comprising the world’s leading knee surgeons who meet to pioneer and progress knee surgery.

Mark is married to Angela and has two sons and a daughter.


  • Primary:
    Kings Prep School 1970,1974-1977
    Knox Grammar 1971-1973
  • Secondary:
    Kings College 1978 - 1982
  • Tertiary:
    Otago University 1983 –1988
  • Residency:
    Royal Australasian College of Surgeons 1993 - 1996

Current Appointments

  • Consultant Orthopaedic Surgeon - 1999 onwards
  • Middlemore Hospital
  • Ascot & Mercy Hospital
  • Columba at Ascot

Orthopaedic Training


  • January 1997: Knee Reconstructive & Arthroplasty Fellowship Mr R.J Bartlett, Melbourne Australia
  • August 1997: Orthopaedic and Sports Medicine Fellowship Fowler Kennedy Sports Medicine Clinic University of Western Ontario, London, Canada
  • February 1998: Orthopaedic & Sports Medicine Research Fellowship Dr Freddie Fu, University of Pittsburgh, Pittsburgh, USA
  • August 1998: Adult Reconstructive Fellowship, Brigham & Women's Hospital, Boston USA
  • January 1999: Adult Reconstructive Fellowship Dr Allan Gross, Mt Sinai, Toronto Canada


New Zealand Orthopaedic Association Training Scheme: 1993 - 1996:

  • 1996: North Shore Hospital, Auckland
              Middlemore Hospital, Auckland
  • 1995: Middlemore Hospital, Auckland
              Auckland Hospital
  • 1994: Wellington Hospital
              Hutt Hospital, Wellington
  • 1993 Wellington Public Hospital
             Hospital for Sick Chidren Toronto
             Mt Sinai Hospital Toronto

Basic Training

  • 1992 Auckland Hospital
  • 1991 Middlemore Hospital
  • 1990 Newmarket Hospital UK - Mr DJ Dandy, Mr CR Constant
  • 1989 Middlemore Hospital
  • 1988 Hughston Orthopaedic Clinic, Columbus GA, USA


  1. Amendola A, Menon M, Clatworthy M, Fowler P J. The effect of fixation technique on graft position in anterior cruciate ligament reconstruction. Iowa Orthop J 2003; (23): 29-35
  2. Amendola A, Fowler P J, Litchfield R, Kirkley S, Clatworthy M. Opening wedge high tibial osteotomy using a novel technique: early results and complications. J Knee Surg 2004; (17): 164-169
  3. Bartlett R J, Clatworthy M G, Nguyen T N. Graft selection in reconstruction of the anterior cruciate ligament. J Bone Joint Surg Br 2001; (83): 625-634
  4. Bettin D, Bohm H, Clatworthy M, Zurakowski D, Link T M. Regeneration of the donor side after autogenous fibula transplantation in 53 patients: evaluation by dual x-ray absorptiometry. Acta Orthop Scand 2003; (74): 332-336
  5. Clatworthy M, Amendola A. The anterior cruciate ligament and arthritis. Clin Sports Med 1999; (18): 173-98, vii
  6. Clatworthy M G, Clark D I, Gray D H, Hardy A E. Reamed versus unreamed femoral nails. A randomised, prospective trial. J Bone Joint Surg Br 1998; (80): 485-489
  7. Clatworthy M G, Annear P, Bulow J U, Bartlett R J. Tunnel widening in anterior cruciate ligament reconstruction: a prospective evaluation of hamstring and patella tendon grafts. Knee Surg Sports Traumatol Arthrosc 1999; (7): 138-145
  8. Clatworthy M G, Gross A E. The allograft prosthetic composite: when and how. Orthopedics 2001; (24): 897-898
  9. Clatworthy M G, Ballance J, Brick G W, Chandler H P, Gross A E. The use of structural allograft for uncontained defects in revision total knee arthroplasty. A minimum five-year review. J Bone Joint Surg Am 2001; (83-A): 404-411
  10. Janousek A T, Jones D G, Clatworthy M, Higgins L D, Fu F H. Posterior cruciate ligament injuries of the knee joint. Sports Med 1999; (28): 429-441
  11. Lyall H A, Cohen B, Clatworthy M, Constant C R. Results of the Souter-Strathclyde total elbow arthroplasty in patients with rheumatoid arthritis. A preliminary report. J Arthroplasty 1994; (9): 279-284
  12. Shaw A D, DiBartolo G, Clatworthy M. Daystay hamstring ACL reconstruction performed under regional anaesthesia. Knee 2005; (12): 271-273
  13. Maddison R, Prapavessis H, Clatworthy M:Modeling and rehabilitation following anterior cruciate ligament reconstruction. Ann Behav Med. 2006 Feb;31(1):89-98
  14. Munro JT, Pandit S, Walker CG, Clatworthy M, Pitto RP Loss of tibial bone density in patients with rotating- or fixed-platform TKA Clin Orthop Relat Res 2010 Mar;468(3):775-81

Book Chapters

  1. M.G Clatworthy, S Magnes, A Amendola Overuse injuries of the lower limb AAOS Sports Medicine Update 1999
  2. Higgins,L , Clatworthy M, Jones, D, Fu F: Complications and pitfalls in the reconstruction of cruciate ligaments. Knee Surgery: Complications, Pitfalls and Salvage Spinger Verlag, M Malek 2000
  3. M G Clatworthy Arthritis in the ACL deficient knee M Bonin Springer Verlarg. 2002
  4. M.G Clatworthy, Gross A.E: Management of Bony Defects in Revision TKR, The Adult Knee Lippincott Williams & Wilkins 2002
  5. M.G Clatworthy: Hamstring tendon ACL reconstruction results in an unacceptable degree of tunnel widening, Sports Injuries to the Knee: Controversies in Orthopaedic Surgery. Oxford University Press

Ongoing Research

  1. Tunnel widening in ACL reconstruction: A sheep model
  2. Relationship of tibial slope on outcome in ACL reconstruction
  3. Ligament balancing in TKA using CAS
  4. Prospective study of MACI
  5. The role of the anterior-medial opening wedge osteotomy in PCL deficient knees with medial compartment osteoarthritis
  6. A randomised prospective trial of mobile vs fixed bearing TKJR
  7. A randomized prospective trail of a cruciate retaining mobile bearing vs cruciate sacrificing high flex TKJR
  8. A randomized prospective study of conventional vs minimally invasive TKJR
  9. Microfracture for treatment of full thickness articular cartilage defects
  10. CAS Evaluation of Femoral rotation in TKA
  11. CAS Evaluation of Distal Femoral Resection in TKA


  • Howmedica Prize for best registrar paper at NZOA - 1995
  • Richards Prize for best paper at Registrar’s research day - 1995
  • Kanga/Kiwi Cup for best paper at combined NZOA/AOA - 1996
  • Richards prize for best registrar NZOA paper - 1996
  • Anzac Travelling Fellow Australia - 1996
  • AANA Resident / Fellow Research Essay award - 1999
  • APOA Travelling Fellow to Europe - 2002
  • Kanga/Kiwi Cup for best paper at combined NZOA/AOA - 2006


  • Ferguson grant for "Gene Therapy at the tendon bone tunnel interface"
  • Smith & Nephew Grant for "A sheep model for tunnel widening in ACL reconstruction"


  • ACL Study Group – Executive Committee. Program Committee Chair
  • ISAKOS - Deputy Chairman Arthroscopy Committee 2007 - 2009
                   Chairman Arthroscopy Committee 2009 - 2011
  • Herodicus Society
  • Magellan Society
  • New Zealand Knee Society
  • International Cartilage Repair Society (ICRS)
  • American Academy of Orthopaedic Surgeons (AAOS)

Invited Speaker

  • Brazilian Knee Society 2001
  • De Puy Winter Meeting 2001
  • Richards Winter Meeting 2002
  • French Arthroscopic Society 2002
  • De Puy Champion Surgeon 2005 - 2010
  • Australian Orthopaedic Association 2006
Dr Mark Clatworthy
  • Ascot Hospital

    Level 1, 90 Greenlane Road East
    Remuera, Auckland 1051


  • North Shore Clinic

    Millennium Institute of Sports and Health
    17 Antares Place
    North Shore City 0632