Numbers

Knee » Numbers » Registered procedures 2007-2019

TABLE Number of registered knee arthroplasties per year of surgery (2007-2019) in the LROI in May 2019

Type of knee arthroplasty
Year of
surgery		 Total arthroplasty (n) Unicondylar arthroplasty (n) Patellofemoral arthroplasty (n) Other (n) Unknown/
missing (n)		 Revision arthroplasty (n) Total (n)
2007 7,037 773 47 42 840 595 9,334
2008 11,749 1,212 92 61 353 908 14,375
2009 16,790 1,548 139 62 113 1,300 19,952
2010 18,509 1,717 143 78 163 1,624 22,234
2011 19,521 1,586 116 80 127 1,794 23,224
2012 21,718 1,578 172 91 172 2,116 25,847
2013 22,309 1,804 135 28 178 2,310 26,764
2014 24,243 2,364 116 26 92 2,557 29,398
2015 24,245 2,692 157 10 39 2,685 29,828
2016 24,887 2,947 144 5 94 2,926 31,003
2017 25,556 3,662 168 17 24 2,997 32,424
2018 25,843 4,073 183 10 14 2,931 33,054
2019 25,859 4,888 175 26 20 3,069 34,037
Total 268,266 30,844 1,787 536 2,229 27,812 331,474

© LROI 2020

The LROI is nearly complete as of 2010. Therefore, a dotted line was inserted between 2009 and 2010.

Knee » Numbers » Type of procedures 2010-2019

FIGURE Number of primary knee arthroplasties and knee revision arthroplasties registered in the LROI in the Netherlands in 2010-2019

Year
Total

Type of procedure (n)

Primary knee
20,610
21,430
23,731
24,454
26,841
27,143
28,077
29,427
30,123
30,968
262,804

Knee revision
1,624
1,794
2,116
2,310
2,557
2,685
2,926
2,997
2,931
3,069
25,009

Total:
22,234
23,224
25,847
26,764
29,398
29,828
31,003
32,424
33,054
34,037
287,813

© LROI 2020

Out of 30,968 primary knee arthroplasties that were performed in 2019,
3% (n=981) was performed bilaterally.

Knee » Numbers » Type of procedure per hospital

FIGURE Number of primary knee arthroplasties and knee revision arthroplasties per hospital in the Netherlands in 2019 (n=33991)

Hospital (n=91)

TKA: total knee arthroplasty; UKA: unicondylar knee arthroplasty; PKA: patellofemoral knee arthroplasty.

© LROI 2020

Knee » Numbers » Type of procedure by type of hospital

FIGURE Primary knee arthroplasties and knee revision arthroplasties (proportion [%] per category) by type of hospital in the Netherlands in 2019

Type of hospital

Type of procedure (%)

Primary knee
91.03
65.94
94.88
90.98
90.98

Knee revision
8.97
34.06
5.12
9.02
9.02

Total (n):
28,208
4,998
34,037
831

Please note: In 2019, 67 general hospitals, 7 UMCs and 17 private hospitals performed knee arthroplasties.
General: general hospital; UMC: university medical centre; Private: private hospital.

© LROI 2020

Knee » Numbers » Type of primary knee prosthesis by type of hospital

FIGURE Type of hospital (proportion [%] per catergory) by type of primary knee arthroplasty in the Netherlands in 2019

Type of primary KA

Type of hospital (%)

General
84.30
76.00
82.86
82.98
82.98

UMC
1.96
0.53
1.14
1.73
1.73

Private
13.74
23.47
16.00
15.29
15.29

Total (n):
175
25,859
30,922
4,888

Please note: In 2019, 26 (0.08%) primary knee arthroplasties were registered in the LROI as other type of primary knee arthroplasty. Of 20 (0.06%) primary knee arthroplasties, the type of prosthesis was not registered.
KA: knee arthroplasty; TKA: total knee arthroplasty; UKA: unicondylar knee arthroplasty; PKA: patellofemoral knee arthroplasty.
General: general hospital; UMC: university medical centre; Private: private hospital.

© LROI 2020

Knee » Numbers » Type of primary knee prosthesis by age category

FIGURE Type of primary knee arthroplasty (proportion [%] per category) of patients who underwent a primary knee arthroplasty by age category in the Netherlands in 2019

Age category

Type of primary knee arthroplasty (%)

TKA
65.32
71.90
81.47
88.42
93.71
83.55
83.55

UKA
26.09
26.26
18.19
11.39
6.17
15.80
15.80

PKA
8.08
1.65
0.29
0.13
0.06
0.57
0.57

Other
0.51
0.19
0.05
0.06
0.06
0.08
0.08

Total (n):
594
3,163
4,730
10,850
11,607
30,944

KA: knee arthroplasty; TKA: total knee arthroplasty; UKA: unicondylar knee arthroplasty; PKA: patellofemoral knee arthroplasty.

© LROI 2020