Dr Mattin works privately from St John of God Murdoch and is Co-head of the Orthopaedic Department at Fiona Stanley Hospital. He also has public appointments at Fremantle Hospital and Rockingham General Hospital.

Andrew is the Lead Orthopaedic Surgeon for the Kimberley region as part of the Western Australian Country Health Service. As part of this service he visits Derby, Fitzroy Crossing, Kununurra, Halls Creek and Broome.

Mr Mattin has an interest in trauma in particular injuries to the shoulder and knee. Working at The Alfred, one of Melbourne’s major trauma centres, has motivated him to become more involvement in trauma care and teaching, which he was able to further develop on overseas fellowships in Edinburgh, Bristol and Marbella Spain.

Andrew’s interest in trauma has also been fostered in his involvement in the Australian Army Specialist Reserve with overseas deployments. He also has fellowships in hip, knee and shoulder arthroplasty. Andrew has completed research in shoulder arthroscopy, joint replacement surgery and trauma in Australia and internationally.

After completing Orthopaedic training in Melbourne Victoria in 2012 he went on to complete four fellowships over 2 years in Australia, Scotland, England and Spain. These included specialist fellowships in shoulder and upper limb in Geelong (Victoria), Arthroplasty hip, knee and shoulder in Edinburgh (Scotland), a trauma fellowship in Bristol (UK), and a travelling trauma fellowship in Marbella (Spain).
He was invited in May 2019 to participate in a shoulder masters visitation to Colorado (USA) and presented on the Australian Orthopaedic Association National Joint Replacement Registry data for shoulder replacements in Boston.

Andrew is actively involved and is passionate about the orthopaedic outreach program. As such he participated in the Royal Australasian College of Surgeons West Timor expedition in 2010. He has had previous experience in remote and developing country surgery with placements in Vanuatu, Alice Springs and Darwin in 2003. More recently he was invited to present in Denpassar at the orthopaedic outreach trauma series lectures in March 2015 for Indonesian surgeons and registrars in training.

Mr Mattin is a Fellow of the Royal Australasian College of Surgeons, Fellow of the Australian Orthopaedic Association, member of the Shoulder and Elbow Society Australia, active member of Orthopaedic Outreach, member of the Australian Military Medicine Association, member of the Society of Military Orthopaedic Surgeons, active member of the Australian Army Reserve, AO trauma member, and an Associate member Royal College of Surgeons Edinburgh.