UCL Priment Clinical Trials Unit




HipDyS – Hip Dysplasia Screening Programme 

Trial Summary 

Developmental dysplasia of the hip (DDH) is one of the most common inborn diseases. Early diagnosis of this condition is very important and it can be harmful both to miss DDH and label normal infants as having DDH. Why DDH can be missed or labelled to normal children is not well understood but can be related to the doctor's knowledge, skill and the way the hip consultation is conducted. This research aims to help overcome these issues and proposes the use of a structured checklist to be used by the GP at the 6-week hip check as a computerised template on the GP practice systems, supported by a training video.

The Investigator will divide GPs in England into two groups. One group will use our checklist for all hip checks they carry out. The other group will work as they usually do, without the aid. The study wishes to compare if GPs who use the checklist will do better in identifying babies with DDH than those who do not use our checklist. The Investigator will also evaluate whether using the checklist reduces costs for families around trips to doctors or hospitals, and costs to the NHS. In addition The Investigators will interview general practitioners, health visitors and carers of infants to elicit their perceptions about the intervention.

The study will include GPs registered in England who carry out the 6-week hip check and agree to being randomised and to hospitals releasing data on infants they had examined during the study period. Practices planning to close within 12 months of the start of the study are not eligible. Eligible infants will be identified by general practice patient registers and infants will be invited to attend a 6-week check at their local practices, the research sites. The study plans to include a total of 152 practices in this study and will collaborate with 15 NIHR CRNs to recruit GP practices with efficient and existing infrastructure.

HipDyS Trial Arms


The collaborators of the HipDys Trial are:

Great Ormond Street Hospital

Kings College London

Priment Clinical Trials Unit

University of Bedfordshire

University College London

Steps Charity Worldwide

If you have any questions, please visit the Frequently Asked Questions or email hipdys.admin@ucl.ac.uk.