ClinicalTrials.gg
CompletedNCT04188054Updated Dec 5, 2019

Reducing Knee Compression When Sleeping in Those With Knee OA

A Phase 2 interventional study of Change in sleeping position and No change in sleeping position in Osteoarthritis, Knee, sponsored by University of Bradford. Completed at 1 site in United Kingdom. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-12-05.

Sponsored by University of Bradford · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Registered 1 year 8 months after the study started (first participant enrolled Mar 2018, registered Nov 2019).
Phase
Phase 2
Study type
Interventional
Enrollment
51
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

To determine whether a change in sleeping position so as to prevent the knee being 'pushed' into full extension when lying supine provides pain relief and/or symptom improvement in individuals with knee osteoarthritis (OA).

Read the detailed description

Only those who normally sleep lying on their back will be recruited. Participants will be recruited into two groups: Group 1, 'intervention'; Group 2, 'control'. Participants in group 1 will be asked to change the position they lie on their bed when sleeping; that is, to re-position themselves when lying on their back so that their feet (and ankles) hang over the end of the mattress. Participants in group 2 will be asked to make no change in the way they normally lie on their mattress when sleeping.

Participants will be asked to complete a questionnaire, asking them about the pain and/or discomfort they are currently experiencing, and their current level of physical functioning. The questionnaire used will be the Knee Injury and Osteoarthritis Outcome Score (KOOS) which has been widely used to assess intervention outcomes in individuals with knee OA. They will be asked to complete this questionnaire three times over a 4-month period; for Group 1 this will be before (x2) and after (x1) changing to the new sleeping position (i.e. day of consent, 1 month later on day of change, and 3 months after change); for Group 2 this will be matching the intervals in the intervention group. The primary outcome measure will be the KOOS Pain score, which will be compared pre and post- changing to the new sleeping position.

02

Conditions studied

  • Osteoarthritis, Knee
03

In context

Osteoarthritis, Knee

3,292 studies on the registry are indexed under Osteoarthritis, Knee; 623 are open to participants now.

This study's enrollment of 51 is below the median of 68 across 2,714 interventional studies indexed under Osteoarthritis, Knee.

Browse Osteoarthritis, Knee studies →

Lead sponsor

University of Bradford is the lead sponsor of 6 studies on the registry; 2 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • presence of mild, moderate or severe tibiofemoral-OA (radiologically determined in either or both knees)
  • regularly (routinely) spend periods lying on their back when sleeping.

Exclusion criteria

Exclusion Criteria:

  • those with: rheumatoid arthritis
  • chronic cardiopulmonary problems
  • lower-limb joint(or joint surface) replacement and/or previous knee surgery within previous 12 months
  • unable to lie supine in bed (medical or practical reason)
  • diagnosed with inflammatory arthropathy
  • peripheral neuropathy or other sensory problems
  • injection in the knee within previous 3 months
  • under 18 years of age
  • unable to give consent due to lack of mental capacity
  • currently involved in any research study related to knee OA.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
51 participants (actual)

Study arms

  • Experimental
    Intervention

    Will be asked to change the position they lie on their bed when sleeping; that is, to re-position themselves when lying on their back so that their feet (and ankles) hang over the end of the mattress.

    Behavioral: Change in sleeping position

  • Placebo comparator
    Control

    Will be asked to make no change in the way they normally lie on their mattress when sleeping

    Behavioral: No change in sleeping position

Interventions

  • BehavioralChange in sleeping position

    The new sleeping position requires you to re-position yourself in your bed when lying on your back so that your feet (and ankles) hang over the end of the mattress, i.e. off the end of the bed.

  • BehavioralNo change in sleeping position

    No change to your normal sleeping position

06

What researchers measure

Primary outcomes

  1. change in KOOS Knee Pain

    Knee injury and Osteoarthritis Outcome Scores (KOOS) - sub-scale Pain, from 0 (worst) to 100 (best)

    Time frame: baseline and 3 months (post intervention)

Secondary outcomes

  1. change in KOOS Knee (other sub-scales)

    Knee injury and Osteoarthritis Outcome Scores (KOOS) subscales: Symptoms; Activities-of-Daily-Living; Quality-of-Life, from 0 (worst) to 100 (best)

    Time frame: baseline and 3 months (post intervention)

07

Study locations

1 site
  • Idle Medical Centre
    Bradford, West Yorkshire BD10 8RU, United Kingdom
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Mar 2018 to primary completion in Dec 2018, 8 months.

Of 43 non-industry phase 2 interventional studies under Osteoarthritis, Knee, half reached primary completion within 30 months of starting (the median), counting those still running; a quarter within 11 and three quarters within 61. This study's 8 months is below that.

Counting every sponsor, half of 101 studies reached it within 20 months; a quarter within 12 and three quarters within 39.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 27, 2019
First posted
Dec 5, 2019
StartActual
Mar 19, 2018
Primary completionActual
Dec 10, 2018
CompletionActual
Dec 10, 2018
Last update
Dec 5, 2019
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Dec 5, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04188054
Lead sponsor
University of Bradford
Responsible party
John G Buckley (Principal Investigator, University of Bradford) — Principal investigator
First posted
Dec 5, 2019
Start date
Mar 19, 2018
Primary completion
Dec 10, 2018
Completion
Dec 10, 2018
Last update
Dec 5, 2019

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Dec 2019. You cannot join it, but the record below documents what was studied.

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