About Professor Kohan

Professor Lawrence Kohan


Professor Lawrence Kohan is an eminently experienced orthopaedic surgeon specialising in joint replacement and reconstruction procedures of the hip and knee.

Prof Kohan utilises the latest minimally invasive techniques in hip and knee surgery. He routinely performs Anterior Minimally Invasive Surgery (AMIS®) for total hip replacement procedures, is actively involved in training and education and is committed to ongoing medical research in order to facilitate the best recovery and outcome for his patients following surgery.

Prof Kohan was one of the pioneers of minimally invasive hip surgery in Australia some 15+ years ago and now has one of the longest series of patients standing at 1,400+ anterior hip procedures performed to-date.

The minimally invasive anterior approach to hip surgery is a more technically demanding operation to perform, but it offers patients a wider range of benefits such as being able to walk the very next day, smaller scaring, decreased post-operative pain, decreased blood loss, usually only one night stay in hospital, faster return to work and less risk of dislocation long-term. The data shows that selecting a surgeon with experience performing the operation confers a benefit for the patient too.

“What motivates my work as an orthopaedic surgeon is helping people to maintain quality of life. My work makes it possible for very ill or injured people to regain and keep their health and independence.

We live much longer lives these days because of advances in medicine, nutrition and hygiene. We hope for active lives and good health but we cannot always protect ourselves from illnesses or accidents such as degenerative joint disease, rheumatoid arthritis, or severe injury to the joints.

The surgery I perform such as hip and knee replacements, knee reconstructions and arthroscopic surgery improves the mobility and function of the injured joint. For older people this can mean many more years of valuable independence and active life. For younger people, particularly those with knee injuries, surgery can save them from permanent disability and in some cases will see them right back onto the football field. Once more they can trust their body to brace them for the brisk pace of life in today’s world.

I watch my patients progress from pain and fear, to rehabilitation, and then in most cases to a return to normal life. It gives me a great deal of satisfaction. It’s my lifelong professional commitment”.


  • 35+ years experience in hip and knee surgery
  • 5,000+ hip operations completed
  • 4,500+ knee operations completed


  • Bachelor of Medicine & Bachelor of Surgery (Hons), University of Sydney (1976)
  • Royal Australian College of Surgeons Primary Examination – awarded ‘The Gordon Taylor Prize’ for highest marks (1977)
  • Fellow of the Royal Australian College of Surgeons (1983)
  • Fellow of the Australian Orthopaedic Association (1987)
  • Travelling Fellow of the Western Pacific Orthopaedic Association (1990)
  • PhD (Science), Thesis; “Surgical aspects, finite element analysis & x-ray correlation of femoral neck changes in the osteoarthritic hip and hip resurfacing surgery” (2010)


  • 1976 – 1979: Resident Medical Officer, Royal Prince Alfred Hospital, Sydney
  • 1979 – 1980: Registrar in General Surgery, St George Hospital, Sydney
  • 1980 – 1984: Australian Orthopaedic Association Registrar Training Programme, Sydney
  • 1984: Relieving Orthopaedic Surgeon, Royal South Sydney Hospital, Sydney, (assistant to Dr P. Maquet, Clinic St. Elizabeth Liege, Belgium)
  • 1984 – 1985: Senior Registrar in Orthopaedics, Addenbrookes Hospital, Cambridge, UK
  • 1985: Relieving Orthopaedic Surgeon, Lewisham Hospital, Sydney
  • 1985 – 1987: Senior Lecturer in Orthopaedic (Part-time), University of New South Wales / Prince of Wales Hospital, Sydney
  • 1985 – 1993: Senior Orthopaedic Surgeon, Lewisham Institute of Sports Medicine, Sydney
  • 1986: Senior Orthopaedic Surgeon, The Prince Henry and Prince of Wales Hospitals, Sydney


  • 1987 – 1989: Convenor at Prince of Wales Hospital Clinical Meeting Programme
  • 1988: Prince of Wales Hospital Representative to the Board of Studies of the Australian Orthopaedic Association
  • 1988: Clinical Examiner (Undergraduates), University of New South Wales
  • 1988 – 1990: Consultant Committee – Surf Life Saving Association Helicopter Rescue Service
  • 1989 – 1990: Medical Advisory Committee, Netherleigh Private Hospital
  • 1989: Convenor – Australian Orthopaedic Association – 1989 Annual State Meeting, Sydney, NSW Australia
  • 1989 – 1991: Secretary – Department of Orthopaedic, Pacific Hospital
  • 1990 – 1992: Warden – South Side Registrar Training Programme, Australian Orthopaedic Association
  • 1993 – 1995: Secretary – South Side Board of Studies, Australian Orthopaedic Association
  • 1993: Secretary – Western Pacific Orthopaedic Association – Hip and Sports Medicine Chapter – Annual Meeting


  • 1985: Member, Australian Society of Orthopaedic Surgeons
  • 1985: Member, Australian Association of Surgeons &
    Member, Australian Military Medicine Association
  • 1987: Fellow of the Australian Orthopaedic Association &
    Member, Australian Medical Association
  • 1988: Member, Western Pacific Orthopaedic Association
  • 1997: American Academy of Orthopaedic Surgeons
  • International Affiliate Member, Medical Board travelling Fellowship
  • 1990: Member, Australian Knee Society
  • 1991: Member, Australian orthopaedic foot and ankle society
  • 1993: Member, Australian Sports Medicine Federation &
    Member, The Medico-Legal Society of NSW


  • 2001: Unicompartmental Knee Replacement Minimally Invasive Technique.


  • 1981: The St. George Hospital Reunion Week Meeting – Registrar’s Prize for the “Research in Progress” session “Femoral Shaft Overgrowth after Fracture in Children”
  • 1983: The Prince of Wales Hospital Clinical Meeting – “Analysis of Failures of Total Hip Replacements”
  • 1987: Australian Orthopaedic Association – NSW Regional Branch Meeting – “Upper Femoral Osteotomy in Osteoarthritis of the Hip” The Prince of Wales Hospital Clinical Meeting – “Biomechanics of the Knee” The Prince of Wales Hospital Clinical Meeting – “Techniques and Complications Of Upper Femoral Osteotomy”
  • 1987: Australian Orthopaedic Association – NSW Regional Branch Meeting – “Upper Femoral Osteotomy in Osteoarthritis of the Hip”The Prince of Wales Hospital Clinical Meeting – “Biomechanics of the Knee”The Prince of Wales Hospital Clinical Meeting – “Techniques and ComplicationsOf Upper Femoral Osteotomy”
  • 1987: Lewisham Institute of Sports Medicine Postgraduate Course – “Review of Patello- Femoral Problems”Australian Orthopaedic Association – Continuing Education Meeting – Sydney”Osteotomy For CDH, Perthes, SUFE – The Maquet Experience” “Corrective Osteotomy for OA in Below 40’s”Royal Australians College of General Practitioners – Sydney”Arthroscopic Surgery of the Knee”
  • 1988: The Prince of Wales Hospital Clinical Meeting – “Shoulder Arthroscopy”Royal Australian College of General Practitioners – Sydney”Common Painful Conditions of the Shoulder”Lewisham Institute of Sports Medicine – Postgraduate Course in Sports Medicine -“Excessive Lateral patellar Pressure Syndrome”
  • 1989: The Prince of Wales Hospital Clinical Meeting – “Update on Arthroscopy”Australian Orthopaedic Association – Annual General Meeting – “OsteochondritisDissecans – Histological Analysis of the Healing Lesion”Eastern Japanese Society for Rheumatics and Joint Surgery – Tokyo “OsteochondritisDissecans” -Histological Analysis of the Healing Lesion
  • 1990: The Knee Society Annual Meeting – “OsteochondritisDissecans – Histological Analysis of the Healing Lesion”.Eastern Suburbs Medical Association – “Arthroscopic Knee Surgery”Australian Orthopaedic Association – Annual Scientific Meeting – “Injuries To Orthopaedic Surgeons While Operating”Australian Orthopaedic Nurses Association – “Cruciate Ligament Reconstruction”
  • 1991: The Hunter Postgraduate Medical Institute – “Injury and Repair of the Sporting Knee”Australian Orthopaedic Association – NSW Regional Branch Meeting – “Upper Tibial
    Osteotomy – The Choice of Procedure”Western Pacific Orthopaedic Association – Knee and ports Medicine Section – Seoul,
    Korea – Biennial Meeting – Report on Internal Travelling Fellowship”
  • 1992: RACGP – NSW Faculty Education Section – “Use of Steroids in Orthopaedic Problems”Australian Knee Society – “Use of Tissue Expanders for Tibial Tuberosity Elevation” –
    “Dome High Tibial Osteotomy – Modified Fixation”DMS Eastern Area Health Service Clinical Update Conference – “Knee Reconstruction”Eastern Suburbs Medical Association Annual Meeting – “Arthroscopy” – “Knee Reconstruction” – “The Damaged ACL – “Joint Replacement”
  • 1993: Royal Australian College of General Practitioners – “Orthopaedic Update”University of NSW School of Physiological and Pharmacology – Sports MedicineCourses – “Proprioception and Rehabilitation”Australian Orthopaedic Nurses Association Inc. – “Bone Tumours”
  • 1995: Australian Orthopaedic Association 54th Annual Scientific Meeting”High Tibial Osteotomy – Techniques and Results””Modified Technique for fixation of Dome Upper Tibial Osteotomy””Tissue Expansion in Tibial Tuberosity Elevation””Povidone-Iodine sterilisation of Contaminated Bone-Tendon Autograft””Interthigh Circumference Variation” – PosterThe University of New South Wales, Sports medicine Courses”Review of Diagnosis/Examination and Management of Sports Injuries to theGroin and Knee – Case Studies”Australian Orthopaedic Association Annual Scientific Meeting”Application of the Ilizarov Frame for Malunion”Sports Medicine Australia Symposium”Knee Reconstruction – current techniques and directions”.Symposium on Trauma AOA Continuing Orthopaedic Education”Correction of Post Traumatic Deformity – Ilizarov Technique”Poster Exhibit at the Combined Congress of the International ArthroscopyAssociation and the International Society of the Knee Meeting “Sterilization ofContaminated Bone-Tendon autograft Using 10% Poisoned Iodine”.The Australian Army – Clinical Update Conference Programme”Knee Reconstruction”.Australian Military Medicine Association Conference – “Patello-femoral Pain”
  • 1996: The University of New South Wales, Sports Medicine Courses”Review of Diagnosis/Examination and Management of Sports Injuries to theGroin and Knee – Case Studies”
  • 1997: Orthopaedic Conference programme Port Maquarie”Bone Tumours”Yu Y, Markovic B, Sonnabend D H, Howlett C R, Bruce W, Neil M, Kohan L, Walsh WR
    “M-RNA expression of Cytokines from failed THA”. AOA Canberra October 12-17 1997.