Hendrik (Paul) Dijkstra

DPhil in Evidence-Based Health Care


Improving research quality on primary cam morphology

Research abstract

Background: Primary cam morphology is an acquired bony prominence at the femoral head-neck junction of the hip. It likely develops during skeletal maturation as a normal physiological response to load. Although primary cam morphology is benign in many athletes’ hips, some could be burdened by hip disease. The problem is that clinicians and researchers don’t yet know who. Many questions on primary cam morphology's aetiology, treatment and prognosis remain unanswered. One reason is existing research mired in confusion partly because stakeholders have not agreed on key primary cam morphology elements, or a prioritised research agenda.   

Aim: To inform a more rigorous, inclusive, and evidence-based approach to research on primary cam morphology and its natural history. Objectives: to deliver a program of mixed methods research that will:

  1. ascertain the level of agreement among experts on definitions, terminology, taxonomy, and imaging outcome measures for research on primary cam morphology;
  2. work towards an agreement (and highlight risidual disagreements) on a set of research priorities on conditions affecting the young person’s hip, focussing on primary cam morphology and its natural history;
  3. inform education events to engage stakeholders, disseminate the latest evidence, and stimulate debate


Prof Mike Clarke, Prof Sion Glyn Jones, Dr Jason Oke, Prof Karim Khan, Prof Trisha Greenhalgh


I have extensive clinical and leadership experience in elite sport including UK Athletics Chief Medical Officer to the Beijing and London Olympic Games and Head Quarters Doctor for Team England at the 2014 Glasgow Commonwealth Games. I was the Local Organizing Committee Chief Medical Officer for the 12th FINA World Swimming Championships (25m) in Doha, 2014 and the Deputy Medical Director, Local Organizing Committee, IAAF World Athletics Championships, Doha 2019.

As Director of Medical Education at Aspetar I am responsible for an extensive program of accredited Continuing Medical Education / Continuing Professional Development for all healthcare practitioners at Aspetar as well as Aspetar’s undergraduate and graduate student education programs; this include the different fellowship programs in collaboration with the clinical departments.

I am an Assistant Professor of Medicine at Weill Cornell Medicine Qatar. 


Dijkstra HP, Ardern CL, Serner A, et al. Primary cam morphology; bump, burden or bog-standard? A concept analysis. Br J Sports Med 2021;55:1212–21. doi:10.1136/bjsports-2020-103308
Reiman MP, Agricola R, Kemp JL, et al. Consensus recommendations on the classification, definition and diagnostic criteria of hip-related pain in young and middle-aged active adults: from the International Hipe-related Pain Research Network, Zurich 2018 (Accepted for publication, BJSM, January 2020)
Kemp JL, Risberg MA, Mosler AB, et al. Physiotherapist-led treatment for young to middle-aged active adults with hip-related pain: Consensus recommendations from the International Hip-related Pain Research Network, Zurich 2018.  Br J Sports Med 2019
Mosler AB, Kemp JL, King MG, et al. Standardised measurement of physical capacity in young and middle-aged active adults with hip-related pain: Recommendations from the 1st International Hip-related Pain Research Network (IHiPRN) meeting, Zurich 2018. Br J Sports Med 2019
Griffin DR, Dickenson EJ, O’Donnell J, et al. The Warwick Agreement on femoroacetabular impingement syndrome (FAI syndrome): an international consensus statement. Br J Sports Med 2016;50:1169–76. doi:10.1136/bjsports-2016-09674

Papers and lectures

Invited speaker - The IOC World Conference on Prevention of Injury & Illness in Sport, Monaco, March 2020 "To prevent and protect the hip, we have to understand primary cam morphology, its cause and prognosis - but can we yet?"

Key note speaker -  International Conference on Medicine and Science in Athletics, Doha, Qatar (3-5th May 2019). "Shared decision-making in athletics"

Invited speaker – 6th Asian Football Confederation Sports Medicine Conference, Chengdu, China (4-8th March 2019). Delivered presentation: “Evidence-Based Sports Medicine”

Invited key note speaker - Swiss Sports Medicine and Physiotherapy Conference: 15-16th November 2018, BERN, Switzerland. Title: “Hip, Risk and Decision-Making”


Research interests

Primary cam morphology and its natural history; Research quality; Consensus methodology; Evidence-based Health Care