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Data Quality
Revision within 1 and 3 years
Knee » Survival » Revision within 1 and 3 years » By type of revision
TABLE Cumulative 1-year and 3-years revision percentage of primary total knee arthroplasties by type of revision in the Netherlands in 2012-2016 (n=117,040)
Cumulative 1-year revision percentage | Cumulative 3-years revision percentage | |||
Competing Risk (95% CI) | Kaplan Meier (95% CI) | Competing Risk (95% CI) | Kaplan Meier (95% CI) | |
Any type of revision¹ | 1.1 (1.0-1.1) | 1.0 (0.9-1.0) | 3.5 (3.4-3.6) | 3.5 (3.4-3.6) |
Major revision² | 0.4 (0.4-0.5) | 0.4 (0.4-0.4) | 1.6 (1.5-1.7) | 1.6 (1.5-1.7) |
Minor revision³ | 0.6 (0.6-0.7) | 0.5 (0.5-0.6) | 1.8 (1.8-1.9) | 1.8 (1.8-1.9) |
¹ Any type of revision includes minor and major revisions as well as revision procedures that could not be classified as minor or major revision.
² Revision of at least the femur or tibia component.
³ Only insert and/or patella exchange (including patella addition).
CI: confidence interval.
© LROI 2020
In 2012-2016, 3,459 (3.0%) primary TKAs were implanted in patients who died within three year after the primary procedure.
Knee » Survival » Revision within 1 and 3 years » Overall revision per hospital
FIGURE Funnel plot of proportion of knee revision arthroplasties within three years after a total knee arthroplasty per hospital in the Netherlands in 2012-2016 (n=115,987)
Please note: The proportion of revisions within 3 years per hospital were adjusted for casemix factors age, gender, ASA score and diagnosis (osteoarthritis versus other).
TKA: total knee arthroplasty; CI: confidence interval.
The mean 3-years revision percentage is 3.55 in the Netherlands in 2012-2016.
Confidence intervals indicate the plausible range of outcome if all hospitals perform equally well.
Knee » Survival » Revision within 1 and 3 years » Major revision per hospital
FIGURE Funnel plot of proportion of knee major revision arthroplasties within three years after a total knee arthroplasty per hospital in the Netherlands in 2012-2016 (n=115,987)
Please note: Major revision is defined as revision of at least femur or tibia component.
Please note: The proportion of revisions within 3 years per hospital were adjusted for casemix factors age, gender, ASA score and diagnosis (osteoarthritis versus other).
TKA: total knee arthroplasty; CI: confidence interval.
The mean 3-years major revision percentage is 1.76 in the Netherlands in 2012-2016.
Confidence intervals indicate the plausible range of outcome if all hospitals perform equally well.
Knee » Survival » Revision within 1 and 3 years » Reasons for revision by type of revision
TABLE Reasons for revision within three years in patients that underwent a knee revision arthroplasty by type of revision in the Netherlands in 2012-2016
Major revision¹ (n=1,887) | Minor revision² (n=2,158) | Any type of revision³ (n=4,156) | |
Reasons for revision | Proportion4 (%) | Proportion4 (%) | Proportion4 (%) |
Patellar dislocation | 2.2 | 3.8 | 31.6 |
Patellar pain | 10.2 | 50.6 | 31.6 |
Instability | 31.4 | 23.9 | 26.7 |
Infection | 17.9 | 17.3 | 17.6 |
Loosening of tibia component | 35.0 | 0.7 | 16.4 |
Malalignment | 28.7 | 1.8 | 14.0 |
Arthrofibrosis | 7.0 | 6.4 | 6.8 |
Loosening of femur component | 9.2 | 0.2 | 4.3 |
Periprosthetic fracture | 4.1 | 0.3 | 2.1 |
Revision after knee removal | 3.9 | 0.1 | 1.9 |
Insert wear | 1.1 | 2.3 | 1.7 |
Loosening of patella component | 0.3 | 1.2 | 0.7 |
Progression of osteoarthritis | 0.4 | 0.6 | 0.5 |
Other | 7.6 | 8.6 | 8.3 |
¹ Revision of at least the femur or tibia component.
² Only insert and/or patella exchange (including patella addition).
³ Any type of revision includes minor and major revisions as well as revision procedures that could not be classified as minor or major revision.
4 One patient may have more than one reason for revision or re-surgery. As such, the total proportion is over 100%.
© LROI 2020