ISRCTN ISRCTN10665654
DOI https://doi.org/10.1186/ISRCTN10665654
IRAS number 327954
ClinicalTrials.gov number NCT06162195
Secondary identifying numbers IRAS 327954
Submission date
11/12/2023
Registration date
04/01/2024
Last edited
17/06/2024
Recruitment status
Recruiting
Overall study status
Ongoing
Condition category
Musculoskeletal Diseases
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English Summary

Background and study aims
There are two main types of hip replacement: hip resurfacing and total hip replacement. Hip resurfacing can be a treatment for hip osteoarthritis in younger, more active people. It is proven that being able to achieve a certain amount of exercise can lower the risk of some diseases that lead to death. Therefore if there is a type of hip replacement that can help people with hip osteoarthritis achieve a higher level of exercise, this will deepen the understanding of the best treatment to give. The main research questions that the study has been designed to answer are: 1) Is the H1 Implant non-inferior in terms of clinical success to a cementless total hip replacement? 2) Does the H1 Implant allow a higher level (minutes and/or intensity) of exercise compared to a cementless total hip replacement? The answers to these research questions will give more information to surgeons and patients so that they are better informed in the decision-making process relating to their hip replacement choices.

Who can participate?
Patients who have hip osteoarthritis who require a hip replacement.

What does the study involve?
Patients will be identified as potential participants when they attend clinic. If they choose to take part they will be randomly chosen to receive either a hip resurfacing or a total hip replacement. They will have the operation and then at various stages over the next 2 years they will be asked to wear an activity tracker, complete questionnaires about their hip and complete some simple physical exercises. After 2 years they will be told which type of hip replacement they had. The patients will also have x-rays taken of their hip at regular time points up to 10 years after their surgery.

What are the possible benefits and risks of participating?
There will be no immediate benefit to those taking part. However, there could be benefits to future hip replacement patients. There are general risks relating to all surgery and all hip replacement surgery which are not increased by being part of this research. The main specific risk linked to participating in this study is the extra radiation the patients will receive due to the x-rays.

Where is the study run from?
Imperial College London (UK)

When is the study starting and how long is it expected to run for?
September 2024 to April 2035

Who is funding the study?
1. National Institute for Health and Care Research (NIHR) (UK)
2. Embody Orthopaedic Limited (UK)

Who is the main contact?
1. Dr Mariam Al-Laith, m.al-laith@imperial.ac.uk
2. Professor Justin Cobb, j.cobb@imperial.ac.uk

Contact information

Dr Mariam Al-Laith
Scientific

MSK Lab
Sir Michael Uren Hub
Imperial College London
White City Campus
86 Wood Lane
London
W12 0BZ
United Kingdom

Phone +44 (0)2075942697
Email m.al-laith@imperial.ac.uk
Ms Brogan Guest
Public

MSk Lab
Sir Michael Uren Hub
Imperial College London
White City Campus
86 Wood Lane
London
W12 0BZ
United Kingdom

Phone +44 (0)2075942697
Email b.guest@imperial.ac.uk
Prof Justin Cobb
Principal Investigator

MSk Lab
Sir Michael Uren Hub
Imperial College London
White City Campus
86 Wood Lane
London
W12 0BZ
United Kingdom

ORCiD logoORCID ID 0000-0002-6095-8822
Phone +44 (0)2075945534
Email j.cobb@imperial.ac.uk

Study information

Study designProspective randomized (1:1) double-blinded multi-centre study
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Hospital
Study typeTreatment, Efficacy
Participant information sheet Not available in web format, please use contact details to request a patient information sheet
Scientific titleThe ACTIVE trial: a prospective randomised control trial of the H1 implant versus total hip replacement
Study acronymACTIVE
Study hypothesisThe main research hypothesis is that the H1 Implant will be non-inferior to cementless total hip replacement in terms of composite clinical success.

The secondary research hypothesis is that the H1 Implant will be significantly better than cementless total hip replacement in terms of activity level, measured using various metrics.
Ethics approval(s)

Submitted 13/03/2024, Sheffield Research Ethics Committee (Health Research Authority, 2 Redman Place, Stratford, London, E20 1JQ, United Kingdom; +44 (0)207 1048098; sheffield.rec@hra.nhs.uk), ref: 24/YH/0083

ConditionOsteoarthritis, hip inflammatory arthritis
InterventionIntervention 1: The H1 Implant
Intervention 2: Cementless total hip replacement (THR)

The H1 Implant is a cementless, ceramic hip resurfacing arthroplasty (HRA) device. This study will randomise patients to receive either the H1 Implant or a primary cementless ceramic-on-poly or ceramic-on-ceramic total hip replacement (THR).

Randomisation will be performed using variable block randomisation with block sizes of 4, 6 and 8, with a 1:1 allocation to the 2 groups, with stratification across sites. This will ensure approximately equal numbers across groups and approximately the same number per group at each site (to control for differences in the trial population because of environmental, social and demographic factors) while allowing different total numbers at each site. It will also ensure that at any given time, the numbers in each group will be approximately equal, allowing the interim analyses to take place. The randomisation will be managed by the CRO via an electronic data capture (EDC) system, which uses a validated randomisation algorithm. Once a patient has consented, they will be assigned to a treatment group according to the pre-determined order inside the block. Stratification by site is recommended for multi-centre studies.
Intervention typeDevice
Pharmaceutical study type(s)Not Applicable
PhasePhase IV
Drug / device / biological / vaccine name(s)The H1 Implant, Cementless total hip replacement
Primary outcome measureClinical success measured using a composite clinical success score at 0, 6 weeks, 6, 12 and 24 months and 3, 5 and 10 years.
Secondary outcome measures1. Physical activity measured using a wearable activity tracker at 6, 12 and 24 months
2. Physical performance measured using physical performance assessments at baseline, 6, 12 and 24 months
3. Activity measured using the patient-reported outcome measure (PROM) Hip Outcome Score (HOS) at baseline, 6 weeks, 6, 12 and 24 months
4. Activity measured using the PROM UCLA Activity Score at baseline, 6 weeks, 6, 12 and 24 months
5. Noise measured using a Noise Survey at 6 weeks, 6, 12 and 24 months
Overall study start date01/09/2023
Overall study end date01/04/2035

Eligibility

Participant type(s)Patient
Age groupAdult
Lower age limit18 Years
Upper age limit100 Years
SexBoth
Target number of participants200
Participant inclusion criteria1. Patient requires unilateral primary hip arthroplasty due to primary osteoarthritis, osteoarthritis secondary to e.g. trauma, avascular necrosis or developmental hip dysplasia, or inflammatory arthritis
2. Patient is willing to comply with study requirements
3. Patient plans to be available through 24 months postoperative follow-up
Participant exclusion criteria1. Patient has a BMI greater than 40 kg/m²
2. Patient has active infection or sepsis (treated or untreated)
3. Patient has insufficient bone stock at the hip (>1/3 necrosis of the femoral head or large and multiple cysts) or in general as in severe osteopenia or osteoporosis (Tscore < -2.5 as measured with BMD)
4. Patient is not skeletally mature
5. Patient meets the contraindication criteria of the control device
6. Patient already has another lower limb arthroplasty or arthrodesis or will require a further lower limb arthroplasty or arthrodesis within the subsequent 2 years
7. Patient lacks capacity to consent
8. Patient is unable to understand the native language of the country where their procedure is taking place
Recruitment start date01/09/2024
Recruitment end date01/06/2025

Locations

Countries of recruitment

  • England
  • United Kingdom

Study participating centre

Charing Cross Hospital
Fulham Palace Road
London
W6 8RF
United Kingdom

Sponsor information

Embody Orthopaedic
Industry

Sir Michael Uren Hub
86 Wood Lane
London
W12 0BZ
England
United Kingdom

Phone +44 (0)2075943600
Email camilla.halewood@embody-ortho.com
Website https://www.embody-ortho.com
ROR logo "ROR" https://ror.org/018caxa54

Funders

Funder type

Government

National Institute for Health and Care Research
Government organisation / National government
Alternative name(s)
National Institute for Health Research, NIHR Research, NIHRresearch, NIHR - National Institute for Health Research, NIHR (The National Institute for Health and Care Research), NIHR
Location
United Kingdom
Embody Orthopaedic Limited

No information available

Results and Publications

Intention to publish date01/04/2036
Individual participant data (IPD) Intention to shareYes
IPD sharing plan summaryPublished as a supplement to the results publication
Publication and dissemination planPlanned publication in a high-impact peer-reviewed journal
IPD sharing planThe datasets generated and/or analysed during the current study will be published as a supplement to the results publication.

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Statistical Analysis Plan version 1.01 29/01/2024 17/06/2024 No No

Additional files

ISRCTN10665654 The ACTIVE Trial Statistical Analysis Plan_1.01.pdf

Editorial Notes

17/06/2024: The following changes were made to the trial record:
1. The ClinicalTrials.gov number was added.
2. The statistical analysis plan was uploaded as an additional file.
16/03/2024: The following changes were made:
1. The recruitment start date was changed from 01/03/2024 to 01/09/2024.
2. The recruitment end date was changed from 01/01/2025 to 01/06/2025.
3. Ethics submission information was added.