Orthopaedic Surgery

Turlough O’Neill

Turlough O’Neill

MVB MVS MACVSc CertSAS DipECVS MRCVS

RCVS Specialist in Small Animal Surgery (Orthopaedics)

EBVS® European Specialist in Small Animal Surgery

Turlough graduated from the Veterinary College of Ireland, University College Dublin in 1987. After 2 years in mixed practice in Ireland, Turlough moved to Australia when he spent time in a number of large institutional hospitals before managing a small animal practice.

He became a member of the Australian College of Veterinary Scientists by examination in 1996 and completed a Masters of Veterinary Studies and a residency in Small Animal Surgery at the University of Melbourne.

Turlough returned to the UK as a lecturer in Small Animal Surgery at the University of Liverpool in 2000. He successfully passed the Royal College Certificate in Small Animal Surgery (2002) and then the European Diploma in Small Animal Surgery (2005).

He moved to private surgery referral practice in West Yorkshire for 10 years before a short stint in the North East before returning to the North West. Turlough enjoys all aspects of orthopaedic surgery including arthroscopy and spinal surgery.


Nick Blackburn

Nick Blackburn

BVetMed CertSAS MRCVS

Orthopaedic Surgeon

Nick graduated from the RVC in 1998. He worked in small animal practices before joining Calder Vets in 2012. Nick gained his certificate in Small Animal Surgery in 2007 and is now an RCVS Advanced Practitioner in Small Animal Surgery.

Nick undertakes most aspects of orthopaedic and spinal surgery. He has gained a large amount experience in the diagnosis, management and treatment of trauma patients. He has a particular interest in joint surgery and regularly performs total hip replacement (THR) surgery for cats and dogs.

Away from work Nick spends much of his time renovating his house. He has also taken up running and now enjoys endurance obstacle events.


Mark Tonzing

Mark Tonzing

BVSc MANZCVS(Small Animal Surgery) MRCVS

Orthopaedic Surgeon

Mark Tonzing graduated with honours from the University of Melbourne in 1993. He pursued a career in surgery and in 2000 was duly admitted as a member of the ACVSc by examination in small animal surgery. He undertook specialist residency training in orthopaedics & spinal surgery at Willows Referral Service between 2002 and 2005 and has worked in specialist referral centres for ten years as an orthopaedic & neurosurgeon and five years operating a peripatetic orthopaedic service.

Mark has extensive experience in all aspects of canine and feline orthopaedics and spinal surgery, including significant experience in canine and feline hip replacement. His team performed the United Kingdom’s first feline total hip replacement, and subsequently the world’s first bilateral feline total hip replacement.

Mark has contributed to and co-authored several scientific publications and in 2005 the British Veterinary Orthopaedic Association awarded him the Lesley Vaughan prize for original orthopaedic research. He has presented research at international scientific meetings and lectured to vets in the United Kingdom, continental Europe and Australia.