Niall Sullivan is an expert in hip replacement and revision surgery, focusing on complex hip pathologies such as avascular necrosis and hip infections. With extensive training in the UK and New Zealand, including multiple fellowships, he is the hip fracture lead at the Bristol Royal Infirmary and an educator for surgical trainees. Having undergone hip surgery himself, Mr. Sullivan empathises with his patients and is committed to providing personalised care for optimal outcomes.

• Orthopaedic Surgeon, Nuffield Health Bristol Hospital
• Orthopaedic Consultant, Spire Healthcare Group plc
• Consultant Trauma & Orthopaedic Surgeon, Bristol Royal Infirmary
• Consultant Trauma & Orthopaedic Surgeon, Southmead Hospital

• BMedSci (Hons) Nottingham University 2005
• BMBS Nottingham University 2007
• MEd & DIC Imperial College London 2015
• FRCS (Tr & Orth) Royal College of Surgeons 2017

• General Medical Council (GMC number): 6162536
• Fellow of Royal College of Surgeons
• British Hip Society

• Yue Gu, Valeria V Alvino, Elisa Avolio, Niall Sullivan, Paolo Madeddu – The senolytic agent Dasatinib reduces fat accumulation in the heart and bone marrow of type 2 diabetic, obese mice and adipogenesis of human bone marrow pericytes. Article, Nov 2023.
• Gwithyen Silk, Niraj Vetharajan, Alice Blohm, Manish Kiran, Niall Sullivan – Are vegans being overlooked in our prescribing practices: An orthopaedic perspective from Bristol, United Kingdom. Article, Sep 2023.
• Yue Gu, Elisa Avolio, Valeria V Alvino, Niall Sullivan, Paolo Madeddu – The tyrosine kinase inhibitor Dasatinib reduces cardiac steatosis and fibrosis in obese, type 2 diabetic mice. Article, Aug 2023.
• Yue Gu, Elisa Avolio, Valeria V Alvino, Niall Sullivan, Paolo Madeddu – The tyrosine kinase inhibitor Dasatinib reduces cardiac steatosis and fibrosis in obese, type 2 diabetic mice. Preprint, Jun 2023.
• Charlotte Richardson, Christopher P. Bretherton, Mohsen Raza, Sonu Mehta, Niall Sullivan – The Fragility Fracture Postoperative Mobilisation multicentre audit: the reality of weightbearing practices following operations for lower limb fragility fractures. Article, Aug 2022.
• Andrew Hall, Nick D Clement, Cristina Ojeda Thies, Miriam Zurrón Lobato, Niall Sullivan – IMPACT-Global Hip Fracture Audit: Nosocomial infection, risk prediction and prognostication, minimum reporting standards and global collaborative audit. Article, Mar 2022.
• Yunfei Li, Yulia Liem, Zaitunnatakhin Zamli, Mohammed Sharif, Niall Sullivan – Subchondral Bone Microarchitectural and Mineral Properties and Expression of Key Degradative Proteinases by Chondrocytes in Human Hip Osteoarthritis. Article, Nov 2021.
• Gwithyen Silk, Niraj Vetherajan, Alice Blohm, Niall Sullivan – P136 Vegan orthopaedics. Article, Apr 2021.
• Yunfei Li, Yulia Liem, Enrico Dall'Ara, Mohammed Sharif, Niall Sullivan – Subchondral Bone Microarchitecture and Mineral Density in Human Osteoarthritis and Osteoporosis: A Regional and Compartmental Analysis. Article, Mar 2021.
• Marianna Santopaolo, Niall Sullivan, Anita C Thomas, Paolo Madeddu – Activation of Bone Marrow Adaptive Immunity in Type 2 Diabetes: Rescue by Co-stimulation Modulator Abatacept. Article, Mar 2021.
• Marianna Santopaolo, Niall Sullivan, Anita C Thomas, Paolo Madeddu – Activation of bone marrow adaptive immunity in type 2 diabetes: rescue by co-stimulation modulator Abatacept. Preprint, Jul 2020.
• Yunfei Li, H. Ahmed, Enrico Dall'Ara, Md. Miraz Sharif, Niall Sullivan – SPATIAL VARIATIONS OF BONE MICROARCHITECTURE AND MINERALIZATION IN HIP OSTEOARTHRITIS AND OSTEOPOROSIS. Article, Jun 2020.
• Yunfei Li, Yulia Liem, Niall Sullivan, Md. Miraz Sharif – Quick and accurate evaluation of cartilage histopathology on undecalcified osteochondral tissue. Article, Apr 2020.
• Yunfei Li, Yulia Liem, Enrico Dall'Ara, Md. Miraz Sharif, Niall Sullivan – Regional and compartmentalized variation of subchondral bone mineralization and microarchitecture in hip osteoarthritis. Article, Apr 2020.
• Simon W Young, Niall Sullivan, Matthew L. Walker, Bill Farrington – No Difference in 5-year Clinical or Radiographic Outcomes Between Kinematic and Mechanical Alignment in TKA: A Randomized Controlled Trial. Article, Feb 2020.
• Roberto Di Napoli, Niall Sullivan – Constructing Surgical Identities: Being and Becoming a Surgeon. Chapter, Nov 2019.
• Giuseppe Mangialardi, David Ferland-McCollough, Davide Maselli, Paolo Madeddu, Niall Sullivan – Bone marrow pericyte dysfunction in individuals with type 2 diabetes. Article, Jul 2019.
• Giuseppe Mangialardi, David Ferland-McCollough, Davide Maselli, Paolo Madeddu, Niall Sullivan – Correction to: Bone marrow pericyte dysfunction in individuals with type 2 diabetes. Article, Jul 2019.
• David Ferland-McCollough, Davide Masseli, Gaia Spinetti, Paolo Madeddu, Niall Sullivan – MCP-1 Feedback Loop Between Adipocytes and Mesenchymal Stromal Cells Causes Fat Accumulation and Contributes to Hematopoietic Stem Cell Rarefaction in the Bone Marrow of Diabetic Patients. Article, Apr 2018.
• Niall Sullivan, Jacqueline Rees-Lee – The Trauma Meeting: An Opportunity For Developing Professionalism And A Positive And Cohesive Department 908. Poster, Sep 2017.
• Alisdair MacLeod, Niall Sullivan, Michael Richard Whitehouse, Richie Gill – Large-diameter total hip arthroplasty modular heads require greater assembly forces for initial stability. Article, Aug 2016.
• Niall Sullivan, Andrew Hughes, Ruth Halliday, Tim Chesser – Early Complications Following Cemented Modular Hip Hemiarthroplasty. Article, Jan 2015.
• Niall Sullivan, P. W. Robinson, Aneel Ansari, James R D Murray – Bristol Index of Patella Width to Thickness (BIPWiT): a reproducible measure of patella thickness from adult MRI. Article, Jul 2014.
• Alexander L Aquilina, Luke R Brunton, Michael Richard Whitehouse, Ashley Blom, Niall Sullivan – Direct Thrombin Inhibitor (Dti) vs. Aspirin in Primary Total Hip and Knee Replacement Using Wound Ooze as the Primary Outcome Measure. A Prospective Cohort Study. Article, Feb 2012.
• Alexander L Aquilina, Niall Sullivan, Luke R Brunton, Ashley Blom – A comparison of a direct thrombin inhibitor against aspirin as venous thromboemoblism prophylaxis in primary total hip replacement using wound ooze as the primary outcome measure. Article, Dec 2011.
• Niall Sullivan, Tom Mcculloch, David Leverton – Alveolar soft part sarcoma causing perianal abscess. Article, Jul 2011.