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A comparison of knee replacement surgery and knee joint distraction for treating osteoarthritis of the knee

Knee ARthroplasty versus joint Distraction Study for osteoarthritis (KARDS)

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN14879004
Enrollment
344
Registered
2020-01-16
Start date
2021-03-31
Completion date
Unknown
Last updated
2026-02-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Osteoarthritis Musculoskeletal Diseases Osteoarthritis

Interventions

This is a pragmatic, non-blinded, multi-centre randomised controlled trial designed to establish the clinical and cost-effectiveness of KJD in an NHS setting. 344 participants will be recruited from s

Sponsors

University of Leeds
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 65 Years

Inclusion criteria

Inclusion criteria: 1. Age > = 18 years and < = 65 years at the time of signing the Informed Consent form 2. Symptoms (pain and/or reduced function) severe enough to warrant knee replacement, in the opinion of the treating clinician 3. Pre-operative leg alignment not requiring correction, in the opinion of the treating clinician 4. Intact collateral knee ligaments, in the opinion of the treating clinician 5. Fixed flexion deformity < = 10 degrees of the involved knee

Exclusion criteria

Exclusion criteria: 1. Bone density not sufficient to support pins for 6 weeks, in the opinion of treating clinician 2. Isolated patello-femoral OA, in the opinion of the treating clinician 3. Complete joint space obliteration in both medial and lateral tibio-femoral compartments as seen on weight bearing AP knee radiograph 4. A known diagnosis of inflammatory arthritis 5. Presence of a previous joint replacement in any limb 6. Surgical treatment of involved knee within the past 6 months (excluding arthroscopy) 7. Previous knee joint distraction on the involved knee 8. Previously participated in the KARDS trial 9. Weight > 120kg 10. Pregnant or lactating (confirmed by participant) 11. Active cancer (currently diagnosed and under treatment) 12. Unable to complete all trial procedures (e.g. attend follow up visits, complete questionnaires) 13. Unable to provide informed consent (cognitive disorder such as dementia, psychiatric illness)

Design outcomes

Primary

MeasureTime frame
Knee Injury & Osteoarthritis Outcomes Score (KOOS) pain component measured at 12 months following surgery

Secondary

MeasureTime frame
1. Patient reported outcomes and Quality of life outcomes (KOOS, Pain VAS, Oxford Knee Score) at baseline and 3, 6, 12, and 24 months after surgery 2. Objective assessment of knee function (Active range of movement and a timed up and go test) at baseline and 3, 12, and 24 months post-surgery 3. Incidence of complications (intra-operative, post-operative and any unplanned surgical interventions on the affected knee) at 3, 12, and 24 months post-surgery 4. Joint space width (assessed quantitatively from standardised radiographs) at 3, 12, and 24 months post-surgery 5. Cost-effectiveness (EQ-5D-3L and Health Resource Utilisation and Private Costs Questionnaire) at 3, 6, 12, and 24 months post-surgery 6. Implementation processes and intervention fidelity (assessed quantitatively using a surgical CRF and assessments of radiographs, and assessed qualitatively) in the first 12 months of recruitment 7. Qualitative evaluation of participant experiences measured using interviews after discharge from hospital and 3 months later

Countries

England, Scotland, United Kingdom

Contacts

Public ContactRachel Kelly
medctkards@leeds.ac.uk+44 (0)113 3436912

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 19, 2026