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Trial Review
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been endorsed by the ANZCTR. Before participating in a study, talk to your health care provider and refer to this
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Trial registered on ANZCTR
Registration number
ACTRN12619001465145
Ethics application status
Approved
Date submitted
17/09/2019
Date registered
23/10/2019
Date last updated
16/04/2021
Date data sharing statement initially provided
23/10/2019
Date results information initially provided
16/04/2021
Type of registration
Prospectively registered
Titles & IDs
Public title
Failure of Unicompartmental knee replacement bearings
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Scientific title
Catastrophic Failure of Convex Unicompartmental Polyethylene bearings
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Secondary ID [1]
299320
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nil known
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Universal Trial Number (UTN)
U1111-1240-2986
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
osteoarthritis
314455
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arthroplasty
314456
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Condition category
Condition code
Musculoskeletal
312790
312790
0
0
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Osteoarthritis
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Surgery
312928
312928
0
0
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Other surgery
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Intervention/exposure
Study type
Observational
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Patient registry
True
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Target follow-up duration
10
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Target follow-up type
Years
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Description of intervention(s) / exposure
Observational study of patients in an institutional data base that have had a unicompartmental knee arthroplasty including a convex polyethylene bearing to ten years.
Patients complete PROMS (see section 4) as routine care at pre op, 6 weeks, 6 month, 12, 24, 60 and 120 months. Radiology at pre op, immediately post op, 12, 24, 60 and 120 months post op.
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Intervention code [1]
315584
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Diagnosis / Prognosis
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Comparator / control treatment
no control group
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Control group
Uncontrolled
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Outcomes
Primary outcome [1]
321411
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knee society scores
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Assessment method [1]
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Timepoint [1]
321411
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pre op, 1,2 5, 10 years
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Primary outcome [2]
321658
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visual analogue score of satisfaction
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Assessment method [2]
321658
0
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Timepoint [2]
321658
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pre op, 1,2 5, 10 years
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Primary outcome [3]
321659
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range of motion assessed with goniometer
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Assessment method [3]
321659
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Timepoint [3]
321659
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pre op, 1,2 5, 10 years
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Secondary outcome [1]
374898
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revision knee surgery, self reported data
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Assessment method [1]
374898
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Timepoint [1]
374898
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assessed at incidence from 0 to 10 years post-operative
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Secondary outcome [2]
376013
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visual analogue score of pain
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Assessment method [2]
376013
0
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Timepoint [2]
376013
0
pre op, 1,2 5, 10 years
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Eligibility
Key inclusion criteria
All patients having a BalanSys unicompartmental knee arthroplasty including a convex polyethylene bearing
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Minimum age
18
Years
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Maximum age
No limit
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
none
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Study design
Purpose
Natural history
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Duration
Longitudinal
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Selection
Defined population
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Timing
Retrospective
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Statistical methods / analysis
descriptive demographics
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Recruitment
Recruitment status
Completed
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Date of first participant enrolment
Anticipated
23/10/2019
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Actual
23/10/2019
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Date of last participant enrolment
Anticipated
23/10/2019
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Actual
23/10/2019
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Date of last data collection
Anticipated
23/10/2019
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Actual
23/10/2019
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Sample size
Target
32
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Accrual to date
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Final
32
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Recruitment in Australia
Recruitment state(s)
SA
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Recruitment hospital [1]
14807
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Calvary Wakefield Hospital - Adelaide
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Recruitment postcode(s) [1]
28056
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5000 - Adelaide
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Funding & Sponsors
Funding source category [1]
303837
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Self funded/Unfunded
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Name [1]
303837
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Address [1]
303837
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Country [1]
303837
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Primary sponsor type
Individual
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Name
David Campbell
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Address
Wakefield Orthopaedic Clinic
270 Wakefield Street, Adelaide,
South Australia 5000
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Country
Australia
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Secondary sponsor category [1]
303968
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None
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Name [1]
303968
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Address [1]
303968
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Country [1]
303968
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
304352
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Calvary Health Care Adelaide Human Research Ethics Committee
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Ethics committee address [1]
304352
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CHCA Human Research Ethics Committee
Calvary SA Office
c/o Calvary Wakefield Hospital
300 Wakefield Street
Adelaide 5000
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Ethics committee country [1]
304352
0
Australia
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Date submitted for ethics approval [1]
304352
0
10/09/2019
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Approval date [1]
304352
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04/10/2019
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Ethics approval number [1]
304352
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19-CHREC-E006
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Summary
Brief summary
This trial reports the unforeseen consequence of a novel design of a unicompartmental knee arthroplasty (UKA) that resulted in a specific mechanical and tribiological mode of failure.
Convex polyethylene bearings were developed to decrease bearing dislocation and used in 32 patients with disabling medial compartment osteoarthritis of the knee.
This study reports the clinical outcomes (PROMS) and revisions for failed implants,
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Trial website
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
96650
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A/Prof David Campbell
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Address
96650
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Wakefield Orthopaedic Clinic
270 Wakefield Street
Adelaide
South Australia 5000
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Country
96650
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Australia
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Phone
96650
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+61 8 82364196
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Fax
96650
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Email
96650
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[email protected]
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Contact person for public queries
Name
96651
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A/Prof David Campbell
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Address
96651
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Wakefield Orthopaedic Clinic
270 Wakefield Street
Adelaide
South Australia 5000
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Country
96651
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Australia
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Phone
96651
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+61 8 82364196
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Fax
96651
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Email
96651
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[email protected]
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Contact person for scientific queries
Name
96652
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A/Prof David Campbell
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Address
96652
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Wakefield Orthopaedic Clinic
270 Wakefield Street
Adelaide
South Australia 5000
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Country
96652
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Australia
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Phone
96652
0
+61 8 82364196
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Fax
96652
0
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Email
96652
0
[email protected]
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Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
No
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No/undecided IPD sharing reason/comment
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What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
Type
Is Peer Reviewed?
DOI
Citations or Other Details
Attachment
Study results article
Yes
Catastrophic failure of biconcave unicompartmental...
[
More Details
]
Documents added automatically
Source
Title
Year of Publication
DOI
Embase
Catastrophic failure of biconcave unicompartmental polyethylene bearings.
2020
https://dx.doi.org/10.1016/j.knee.2020.02.005
N.B. These documents automatically identified may not have been verified by the study sponsor.
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