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Revision within 1 year

By type of revision
Overall revision per hospital
Major revision per hospital
Reasons for revision by type of revision

Hip » Survival » Revision within 1 year » By type of revision

TABLE Cumulative 1-year revision percentage of primary total hip arthroplasties by type of revision in the Netherlands in 2015-2019 (n=153,643)

	Cumulative 1-year revision percentage
	Competing Risk (95% CI)	Kaplan Meier (95% CI)
Any type of revision¹	1.9 (1.8-1.9)	1.8 (1.7-1.9)
Major revision²	1.1 (1.0-1.1)	1.1 (1.0-1.1)
Minor revision³	0.8 (0.7-0.8)	0.7 (0.7-0.7)

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 acetabulum or femur component.
³ Only inlay and/or femoral head exchange (including DAIR procedures).
THA: total hip arthroplasty; CI: confidence interval.

In 2015-2019, 1,901 (1.2%) primary THAs were implanted in patients who died within one year after the primary procedure.

Hip » Survival » Revision within 1 year » Overall revision per hospital

FIGURE Funnel plot of proportion of hip revision arthroplasties within one year after a total hip arthroplasty per hospital in the Netherlands in 2015-2019 (n=153,576)

Please note: The proportions of revisions within 1 year per hospital were adjusted for casemix factors age, gender, ASA score, BMI, smoking, charnley score and diagnosis (osteoarthritis versus other).

THA: total hip arthroplasty; CL: control limits; CI: confidence interval.

The mean 1-year revision percentage is 1.9 (95% CI: 1.7-1.9 ) in the Netherlands in 2015-2019.
Control limits indicate the plausible range of outcome if all hospitals perform equally well.

Hip » Survival » Revision within 1 year » Major revision per hospital

FIGURE Funnel plot of proportion of hip major revision arthroplasties within one year after a total hip arthroplasty per hospital in the Netherlands in 2015-2019 (n=153,574)

Please note: Major revision is defined as revision of at least acetabulum or femur compenent.
Please note: The proportions of revisions within 1 year per hospital were adjusted for casemix factors age, gender, ASA score, BMI, smoking, charnley score and diagnosis (osteoarthritis versus other).
THA: total hip arthroplasty; CL: control limits; CI: confidence interval.

The mean 1-year major revision percentage is 1.1 (95% CI: 1.0-1.1) in the Netherlands in 2015-2019.
Control limits indicate the plausible range of outcome if all hospitals perform equally well.

Hip » Survival » Revision within 1 year » Reasons for revision by type of revision

TABLE Reasons for revision within one year in patients that underwent a hip revision arthroplasty by type of revision in the Netherlands in 2015-2019

	Major revision¹ (n=526)	Minor revision² (n=438)	Any type of revision³ (n=977)
Reasons for revision	Proportion⁴ (%)	Proportion⁴ (%)	Proportion⁴ (%)
Infection	15.6	71.9	41.2
Dislocation	34.2	12.6	24.2
Peri-prosthetic fracture	32.7	1.8	18.5
Loosening of femur component	15.2	0.7	8.5
Loosening of acetabulum component	8.2	0.0	4.4
Girdlestone situation	2.7	0.0	1.5
Inlay wear	0.8	0.5	0.6
Peri-articular ossification	0.4	0.0	0.2
Symptomatic MoM bearing	0.0	0.0	0.0
Other	12.9	13.2	13.1

¹ Revision of at least the acetabulum or femur component.
² Only inlay and/or femoral head exchange (including DAIR procedures).
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. As such, the total proportion is over 100%.