Surgery Staff


Professor Kenneth A Johnson - Associate Dean, Veterinary Clinical Services

Professor Kenneth A Johnson

MVSc PhD FACVSc Diplomate ACVS and ECVS
Clinical Professor of Orthopaedics
Director of Orthopaedic Surgery


Professor Johnson recently returned to The University of Sydney as a Clinical Professor, Director of Orthopaedics and Chief of Surgery. He has specialist qualifications in surgery as a Diplomate of American College of Veterinary Surgeons, a Diplomate of European College of Veterinary Surgery, as well as being a Fellow of Australian College of Veterinary Scientists.

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Associate Professor Max Zuber - Lecturer in Small Animal Surgery

Associate Professor Max Zuber

BVSc FACVSc

Max graduated from Sydney University in 1969 and qualified as specialist animal surgeon, and a Fellow of the Australian College of Veterinary Scientists in 1985. Max has a part-time appointment at the University Veterinary Teaching Hospital, Sydney as Honorary Associate Professor of Surgery with responsibility for teaching surgery to final year students and developing computer based learning programmes for medical and surgical teaching. Max, has a particular interest in orthopaedics, oncology and nuclear medicine and is a partner at the Gladesville Veterinary Hospital in suburban Sydney.


Dr Katja Voss - Senior Lecturer in Small Animal Surgery

Dr Katja Voss

Head of Surgery
Dr med vet Diplomate ECVS
Small Animal Surgery Specialist

Katja graduated 1994 in Switzerland at the University of Zurich. After obtaining her doctoral thesis, she gained experience in general practice for 4 years. She then went back to the University of Zurich to complete an internship and a surgical residency. In 2004, she obtained the ECVS Diploma (European Small Animal Surgery Specialist). The following years Katja occupied a leading position in the Small Animal Surgery team of the University of Zurich as Assistant Professor, until she started working at the UVTHS in 2009. Katja’s research activities focus on orthopaedic surgery topics, in particular trauma and stifle surgery, and gait analysis. Katja loves surgery in cats and is co-editor and author of a book on feline orthopaedic surgery and musculoskeletal disease. She is regularly invited to speak at international courses and meetings.


Dr Alberto Gines - Specialist in Small Animal Surgery

Dr Alberto Gines

DVM Dipl ECVS MRCVS

Dr Alberto Gines graduated with a DVM from the University of Extremadura in Caceres, Spain. As an aside, you should know that Caceres is located in the western part of Spain, and is one of the best preserved examples of medieval villages in Europe. The University of Caceres Veterinary Surgery Department also boasts one of the foremost training centers for minimally invasive surgery in Europe. This amazing facility provides state of the art surgical training for both human surgeons and veterinary surgeons from all over Europe.
After several years working in private practice in Spain, Alberto completed a Masters degree in Total Quality Management in Madrid, and then went to the University of Bristol UK for his ECVS residency training in small animal surgery. Alberto is also enrolled in a PhD program. His major clinical interests are in thoracic surgery and interventional radiology, limb deformity and arthroscopy, but he is enthusiastic about all types of surgery and passionate about student teaching.
The appointment of Dr Gines is a valuable addition to the University’s staff. We warmly welcome Alberto and his family, and wish him every success as he embarks on a new phase of his academic career at the University of Sydney.


Dr Chris Tan - Senior Registrar in Small Animal Surgery

Dr Chris Tan

BVSc BSc (Vet) MANZCVS

Chris graduated from The University of Sydney with a Bachelor of Science (Veterinary) in 1999 and Bachelor of Veterinary Science in 2000. Chris comes with six years experience in general practice as an Associate and Senior Veterinarian. He has worked extensively throughout Sydney and England Veterinary clinics and hospitals, and in 2007 he was admitted as a member of the Australian College of Veterinary Scientists by examination in Small Animal Surgery.
Amongst his other interests and duties at UVTHS, Chris hopes to deliver an improved understanding of the needs of a general practitioner to our referral service.


Dr Alastair Franklin – Consultant in Small Animal Surgery

MA (Cantab) VetMB CertSAS FANZCVS MRCVS


Dr Karl Mathis - Resident in Small Animal Surgery

Dr Karl Mathis

BVSc MANZCVS

Karl graduated from Massey University in New Zealand in 2004 and spent two years in private practice before accepting a surgical internship at Queensland Veterinary Specialists in Brisbane. He then moved to Canada where he completed an internship in small animal medicine and surgery at the University of Guelph and a surgical internship at the Veterinary Emergency Clinic and Referral Centre in Toronto.
During this time he contributed to the veterinary literature with publications in sacral osteochondrosis, congenital vertebral malformation and gastro-oesophageal intussusceptions with concurrent para-oesophageal hernia. His interests include developmental orthopaedic diseases, minimally invasive technologies and biological osteosynthesis.


Dr Mark Newman - Resident in Small Animal Surgery

Dr Mark Newman

BVSc MANZCVS

Mark graduated from Massey University in New Zealand in 2006, and then completed an internship in Small Animal Surgery at University College Dublin in Ireland. Following this he spent three years in general practice in New Zealand and Australia, most recently as a senior associate at a busy urban hospital in Adelaide. Mark was admitted as a Member of the Australian College of Veterinary Scientists in Small Animal Surgery in July 2011, and is also completing a Masters in Veterinary Studies through Murdoch University.
Mark’s special interests include internal fracture fixation and biomechanics, plastic and reconstructive surgery, and surgical neurology.