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psp lead

Tim Theologis, MSc, PhD, FRCS Consultant Orthopaedic Surgeon Tim Theologis

Tim Theologis is a Consultant Orthopaedic Surgeon at Oxford University Hospitals NHS Foundation Trust. He is also a Senior Clinical Lecturer at Oxford University and a Research Professor at Oxford Brookes University. He has a strong clinical and research link with the Oxford Gait Laboratory. He looks after children with orthopaedic conditions, primarily developmental dysplasia of the hip and musculoskeletal tumours, as well as neuromuscular disorders, including cerebral palsy. He is involved in the teaching of medical students, the supervision of postgraduate degrees and the training of orthopaedic residents. He was Editor in Chief for Gait and Posture from 2005 to 2015. He has been a Board member of the British Society for Children’s Orthopaedic Surgery since 2009 and is now President-elect. He chairs the medical committee of the charity STEPS.

Patient representatives

Loredana Guetg-WyattLoredana Guetg-Wyatt, Managing Director of Steps Charity Worldwide 

Loredana Guetg-Wyatt is the Managing Director of Steps Charity Worldwide. She is responsible for the national and international operations of the charity, including research. Steps aims are:

  • That those affected by childhood lower limb conditions are fully informed and supported, from diagnosis to treatment;
  • That there is widespread understanding of childhood lower limb conditions and of the challenges facing those affected by them.
  • That every effort is made to improve treatment and support for childhood lower limb conditions

Emma Morley, Research and Information Officer for Steps Emma Morley

Emma is the Research and Information Officer for Steps, the national charity for those whose lives are affected by childhood lower limb conditions. She produces Step’s condition-related information, in print and online, and provides back-up for the national helpline, supporting affected families. She also leads on the organisation’s research activity and is involved with a range of ongoing projects.

Helen Gregory-Osborne, ParentHelen Gregory-Osborne

I am a parent of a child with C.P. She has had various operations during her lifetime, S.D.R and various  orthopaedic surgery. I am also vice chair of PaCiP (Parents and Carers in Partnership) working to improve the outcomes using co-operation with Health, Social care, and Education for SEND Children 2young People" age 0-25.

CatherineAnn Greave, ParentCatherine Ann

Catherine Ann is Mum to Chloe.  Chloe is 15 with a diagnosis of a rare genetic condition, Cohen Syndrome. Age 7, Chloe had multi-level bi-lateral surgery, with the metal work in her lower limbs subsequently being removed three years later.

Catherine Ann is interested to support this research piece to ensure the right level of is in place for families of children not only requiring lower limb surgery but who have severe learning difficulties.

Daniel Dolley, PatientDaniel Dolley

Daniel has been at the receiving end of lower limb orthopaedic surgery and related treatments since the late 1980s, at the hands (among many others) of Mr Fixsen, Ms Daly, Dr Gage, and Mr Theologis, in what has proved thus far a remarkably successful endeavour to maintain an upright posture and predominantly quadrupedal gait, making a life of international travel, study, and research in the human sciences far easier than it would otherwise have been.


Andreas Roposh.jpgAndreas Roposh, Professor Andreas Roposh MD MSc FRCS 

Professor Roposch is a paediatric orthopaedic surgeon and clinical epidemiologist working at Great Ormond Street Hospital and at the Institute of Child Health, University College London. He has been leading national and international collaborative research studies on topics of paediatric hip disorders. He is currently leading a large UK-wide randomized clinical trial exploring the early diagnosis of hip dysplasia.


Dan Perry .jpgDan Perry, Associate Professor of Trauma Surgery 

Dan is an NIHR Clinician Scientist and Honorary Consultant Orthopaedic Surgeon at Alder Hey Children’s Hospital in Liverpool. 

Dan’s research interests are epidemiology, and the clinical and cost effectiveness of musculoskeletal interventions in children. He is Chief Investigator for the British Orthopaedic Surveillance Study, and developing a series of randomised trials and associated studies. His work is supported by UK NIHR, Musculoskeletal Charities and the Trauma Device Industry.

Nick Nicolaou, Children orthopaedic surgeon Nick Nicolaou.jpg

Nick is a Consultant Paedatric Orthopaedic Surgeon at Sheffield Children's Hospital. He has an interest in Paediatric Knee pathology and Metabolic Bone Disease.

Stephen Cooke, Children orthopaedic surgeon Stephen Cooke

I am a Children orthopaedic surgeon based in Coventry. I have a special interest in the treatment of children with Cerebral Palsy and other neuromuscular conditions. I am a member of BSCOS research committee and am involved in research and teaching.

 Christine Douglas, PhysiotherapistChristine Douglas

 I have 20 years of experience working as a physiotherapist in the NHS. I currently work   at  the Royal National Orthopaedic Hospital, providing Ponseti treatment for the   correction of clubfoot and the treatment of Hip Dysplasia in babies. I also have a   musculoskeletal clinic and provide rehabilitation for children following surgical   procedures. 


Elizabeth Wright,  Advanced Nurse Practitioner. MSc. RGN/RSCN Elizabeth Wright

After qualifying from the Hammersmith Hospital, London; working in general paediatric and neonatal intensive care settings; Liz entered the specialist field of Orthopaedic Paediatric nursing in 1990. She was Sister of a Paediatric orthopaedic ward for six years, then a Nurse Specialist until she commenced her current post of Advanced Nurse Practitioner. Completing her MSc in Advanced Nurse Practice in 2004.

Professional activities:

• Convened and chaired several national paediatric orthopaedic conferences

• Previous Chair and current Treasurer RCN Children and Young Peoples Orthopaedic and Trauma Group

• Regularly attends the RCN Society of Orthopaedic and Trauma Nurses (SOTN) conference; previous member of various SOTN work panels.

• Affiliated member of the British Society of Children’s Orthopaedic Surgeons (applied for) and regularly attends the BSCOS meetings. • Published several times on the subject of paediatric orthopaedics.

Craig WalshCraig Walsh, Advanced Nurse Practitioner for the children’s orthopaedic service in the Oxford University Hospitals NHS Trust. 

Craig is the Advanced Nurse Practitioner for the children’s orthopaedic service in the Oxford University Hospitals NHS Trust. He works within the elective service specialising in DDH, CP, Spina bifida, Limb recon and Sarcoma patients. 


Catherine Barry, Physiotherapist

Catherine is Children’s Musculoskeletal Therapy Team Lead and Neuro Orthopaedic Physiotherapist at Oxford University Hospitals NHS Foundation Trust.  Responsible for a team of specialist musculoskeletal therapists she divides her time between management and clinical work; the latter in orthopaedic rehabilitation and musculoskeletal out-patients.  She has a specialist interest in Cerebral Palsy including multi-level surgery.   Qualifying in 1996 she has worked within the field of children’s Physiotherapy for 20 years, has undertaken post graduate studies in rehabilitation and advancing professional practice and attends the BSCOS allied health professional meetings.   

psp jla advisor

Patricia Ellis, James Lind Alliance AdvisorPatricia Ellis

Tricia has worked in research related environments throughout her career. From her first post as a research and development physicist in a government laboratory, she has moved through consultancy, research funding, training and mentoring, governance and management. With academic qualifications in both natural and social sciences she has worked across national and regional government, the NHS and academia as well as the charity and private sectors.

psp support and administration

Martinique Vella-Baldacchino, Core surgical trainee, Data Analyst for this PSPMartinique Vella

Martinique is currently reading a Masters in International Health Leadership and Management and is a junior editor for the Annals of Medicine and Surgery Journal. Her interests include paediatric orthopaedics and orthopaedic oncology.

Camille Rougelot, PSP Administrator