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CompletedNCT04458961MIKROBEUpdated Nov 18, 2023

MIKROBE Management of Infected Knee Replacements-Obtaining Best Evidence

An interventional study of One-stage and Two-stage in Arthroplasty, Replacement, Knee, sponsored by Royal Devon and Exeter NHS Foundation Trust. Completed at 2 sites in United Kingdom. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-11-18.

Sponsored by Royal Devon and Exeter NHS Foundation Trust · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
3
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Following a prosthetic knee joint infection, two types of operative approach can be undertaken to treat the infection: a one-stage or two-stage revision operation. Both approaches are widely used and are good at treating infection but we don't know which has the best long-term outcomes for patients. This trial aims to assess the feasibility of conducting a randomised controlled trial to evaluate whether treating a prosthetic knee infection with one-stage revision surgery gives a better outcome than two-stage revision surgery in terms of patient function and pain, and cost-effectiveness.

02

Conditions studied

  • Arthroplasty, Replacement, Knee

Keywords

  • Arthropathy
  • Arthropathy Related to Infection
  • Arthropathy of Knee Joint
  • One-stage
  • Two-stage
  • Infection
  • Prosthetic joint infection
03

In context

Lead sponsor

Royal Devon and Exeter NHS Foundation Trust is the lead sponsor of 62 studies on the registry; 8 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
No

Inclusion criteria

  • Adults with prosthetic knee infection suitable for either one-stage or two-stage revision surgery
  • Intra-operatively, all cases must have adequate soft-tissue coverage post debridement to allow single or two stage revision surgery.
  • Case meets the International Consensus Meeting criteria for infection
  • Patients having had a Debridement, Anti-biotic and Implant Retained procedure previously or washout/biopsy only of an infected TKR are suitable

Exclusion criteria

Exclusion Criteria:

  • Unable or unwilling to undergo either treatment
  • Lacking capacity to consent to research
  • Refusal to consent to study for any reason
  • Re-revision of prosthetic knee infection if first revision was for infection
  • Presence of tuberculosis infection
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
3 participants (actual)

Study arms

  • Active comparator
    One-stage

    Procedure: One-stage

  • Active comparator
    Two-stage

    Procedure: Two-stage

Interventions

  • ProcedureOne-stage

    A one-stage revision operation involves one operation to remove the joint, thoroughly cleaning the infected area and then implanting a new joint immediately.

  • ProcedureTwo-stage

    A two-stage revision operation involves two operations: the joint is removed in one operation, a temporary spacer device is inserted, then the infection is treated with antibiotics, and then a new joint is implanted in a second operation.

06

What researchers measure

Primary outcomes

  1. Ease of recruitment of participants

    Number of recruits compared to the number of potential participants.

    Time frame: 20 months

Secondary outcomes

  1. Explaining the study

    Assessment of the process of explaining the study (explanation/recruitment/randomisation) between patients and surgeons via qualitative analysis of audio recording of pre-operative discussions about entering the study.

    Time frame: 20 months

  2. Reasons for non-participation

    Qualitative analysis of semi-structured interviews with those patients who declined to participate in the trial.

    Time frame: 20 months

  3. Patient experience

    Experience and acceptability of the process of recruitment, randomisation and study participation via qualitative analysis of semi-structured interview.

    Time frame: 2 weeks after surgery

  4. Surgeon experience

    Experience of the process of recruitment, randomisation and study participation including thoughts about trial design via qualitative analysis of semi-structured interview after each patient surgery and at the end of the trial.

    Time frame: 20 months

  5. Protocol adherence

    Assessment of any deviations or violations to protocol that occur during the trial.

    Time frame: 20 months

  6. Healthcare resource utilisation

    Patient-reported questionnaire assessing heath and social resource use through an adapted questionnaire of the Client Service Receipt Inventory (CSRI) at 3 and 6 months post-operatively

    Time frame: 20 months

  7. Comparison of two sites

    Recruitment and attrition rates at the two sites

    Time frame: 20 months

  8. Knee injury and Osteoarthritis Outcome Score (KOOS) outcome and completion rates

    Patient-reported questionnaire assessing short-term and long-term symptoms and function in patients with knee injury to be administered pre-, 3 months and 6 months post-operatively

    Time frame: 20 months

  9. Oxford Knee Score (OKS) outcome and completion rates

    Patient-reported questionnaire assessing function and pain after total knee replacement surgery to be administered pre-, 3 months and 6 months post-operatively

    Time frame: 20 months

  10. EQ-5D-5L outcome and completion rates

    Patient-reported questionnaire assessing health-related quality of life to be administered pre-, 3 months and 6 months post-operatively

    Time frame: 20 months

07

Study locations

2 sites
  • Princess Elizabeth Orthopaedic Centre, Royal Devon and Exeter NHS Trust (RD&E NHSFT)
    Exeter, Devon EX2 5DW, United Kingdom
  • Nuffiels Orthopaedic Centre (NOC)
    Oxford, United Kingdom
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 18, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04458961
Lead sponsor
Royal Devon and Exeter NHS Foundation Trust
Collaborators
University of Exeter, Nuffield Orthopaedic Centre NHS Trust, Nottingham University Hospitals NHS Trust, Wrightington, Wigan and Leigh NHS Foundation Trust
Responsible party
Sponsor
First posted
Jul 7, 2020
Start date
Nov 17, 2020
Primary completion
Jan 30, 2023
Completion
Jan 30, 2023
Last update
Nov 18, 2023

Study contacts

Andrew Toms, FRCS
principal investigator · Royal Devon and Exeter NHS Foundation Trust

Oversight

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

Not currently enrolling

This study is completed, as verified in Nov 2023. You cannot join it, but the record below documents what was studied.

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