Surgery Staff
Professor Kenneth A Johnson - Associate Dean, Veterinary Clinical Services
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
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 - Head of Small Animal Surgery
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, which is the European Small Animal Surgery Specialist title. The following years Katja occupied a leading position in the Small Animal Surgery team of the University of Zurich as Assistant Professor, which included duties in the clinic of the University, in research, and in education. Katja’s research activities focused on orthopaedic surgery topics, in particular trauma surgery and gait analysis, but she has also experience in spinal surgery. Within the last years has developed a large interest and knowledge in feline orthopaedic surgery while working on a text book on feline orthopaedics as co-editor and author. Katja is regularly invited to speak at international courses and meetings.
Katja started working as a Staff Specialist Surgeon at the UVTHS in 2009. She still has a Swiss accent, but is hoping that that will resolve with time.
Dr Ben Landon - Lecturer in Small Animal Surgery
BVSc FACVSc (Small Animal Surgery)
Specialist in Small Animal Surgery
Ben Landon graduated from the University of Sydney in 1994 and then worked in private emergency and surgical practices for a number of years. He undertook a surgical residency at the University of Melbourne from 2003. During this time he commenced a Masters in scintigraphic evaluation of portal circulation of dogs undergoing cellophane banding of portosystemic shunts. He was also involved in a study on the development of a novel axial pattern flap for closure of facial defects in dogs. He gained Fellowship of the Australian College of Veterinary Scientists in Small Animal Surgery and specialist registration in 2009. He enjoys all aspects of soft tissue, neurologic and orthopaedic surgery but has particular interests in minimally invasive surgery such as laparoscopy, thoracoscopy and interventional radiologic techniques (with particular application to portosystemic shunts).
Dr Chris Tan - Resident in Small Animal Surgery
BVSc BSc (Vet) MACVSc
Resident in Small Animal Surgery
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 Sonya Wasik - Resident in Small Animal Surgery
BVSc (Hons) BSc (Hons) MACVSc
Small Animal Surgery Resident
Sonya graduated from the University of Queensland with a Bachelor of Veterinary Science with first class honours in 2003. She spent 2 years as an associate in mixed private practice in Queensland before commencing a small animal internship at the University of Melbourne. At the completion of her internship, Sonya spent an additional year working as a research surgeon with the University of Melbourne’s Biomaterials and Surgical Research Unit. Sonya achieved Membership of the Australian College of Veterinary Scientists (Small Animal Surgery) in 2008, and is completing a Master of Veterinary Science (research) degree through the University of Melbourne.
Sonya’s areas of interest include surgical oncology, minimally invasive surgery and thoracic surgery.
Dr Karl Mathis - Resident in Small Animal Surgery
Surgery Resident
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
BVSc MACVSc
Resident in Small Animal Surgery
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.