Demographics

Hip » Total hip arthroplasty » Demographics » Patient characteristics by diagnosis

TABLE Patient characteristics of all patients with a registered primary total hip arthroplasty by diagnosis in the Netherlands in 2019

Osteoarthritis Fracture  Osteonecrosis Late post-traumatic Dysplasia Reumatoid arthritis  Post-Perthes’ disease Tumour Total
N 28,747 (86.5%) 1,774 (5.3%) 889 (2.7%) 775 (2.3%) 532 (1.6%) 150 (0.5%) 86 (0.3%) 66 (0.2%) 33,248
Mean age (years) (SD) 69.7 (9.7) 69.5 (8.8) 62.8 (14.8) 67.9 (11.9) 52.0 (13.5) 65.3 (12.7) 51.1 (14.0) 67.3 (12.5) 69.1 (10.4)
Age (years) (%)
  <50 3 2 18 8 42 8 49 9 4
  50-59 12 10 20 14 30 22 22 15 12
  60-69 30 35 27 29 19 25 21 30 30
  70-79 40 43 22 34 8 37 8 29 39
  ≥80 15 10 13 15 1 8 0 17 15
Gender (%)
  Men 35 32 47 41 28 22 66 45 36
  Women 65 68 53 59 72 78 34 55 64
ASA score (%)
  I 15 12 12 11 34 2 30 1 15
  II 62 56 52 58 54 62 62 23 61
  III-IV 23 32 36 31 12 36 8 76 24
Type of hospital (%)
  General 86 95 84 91 72 85 78 71 86
  UMC 2 5 10 5 13 11 8 29 3
  Private 12 0 6 4 15 4 14 0 11
Charnley-score (%)
  A One hip joint affected 41 65 57 81 51 27 70 60 43
  B1 Both hip joints affected 32 12 21 9 27 28 15 16 31
  B2 Contralateral hip joint with a total hip prosthesis 24 18 18 7 19 18 12 16 23
  C Multiple joints affected or chronic disease that affects quality of life 3 5 4 3 3 27 3 8 3
Mean Body Mass Index (kg/m²) (SD) 27.5 (5.7) 25.1 (4.0) 26.5 (4.8) 25.8 (4.3) 26.8 (4.9) 26.7 (4.8) 27.9 (5.2) 27.4 (6.8) 27.3 (5.6)
Body Mass Index (kg/m²) (%)
  Underweight (≤18,5) 1 4 3 2 2 1 1 2 1
  Normal weight (>18,5-25) 32 51 41 46 39 42 30 48 34
  Overweight (>25-30) 42 34 35 35 37 36 44 30 41
  Obesity (>30-40) 24 11 20 17 20 20 21 14 23
  Morbid obesity (>40) 1 0 1 0 2 1 4 6 1
Smoking (%)
  No 91 89 79 82 87 87 83 89 90
  Yes 9 11 21 18 13 13 17 11 10

Please note: In 2019, 199 (0.6%) patients received a primary THA after a diagnosis that is not listed in the table. Of 30 (0.1%) primary THAs the diagnosis was not registered.
General: general hospital; UMC: university medical centre; Private: private hospital; SD: standard deviation; THA: total hip arthroplasty.

© LROI 2020

Hip » Total hip arthroplasty » Demographics » Age category 2010-2019

FIGURE Trend (proportion [%] per year) in age category in primary total hip arthroplasties in the Netherlands in 2010-2019

Year

Age category (%)

<50
4.49
4.48
4.63
4.69
4.76
4.73
4.46
4.43
4.32
4.18
4.51
4.51

50-59
12.00
12.48
12.30
12.76
12.34
12.39
12.59
11.99
12.18
12.31
12.33
12.33

60-69
31.16
31.90
32.15
32.29
32.36
32.76
32.81
31.18
30.21
30.13
31.65
31.65

70-79
37.17
36.22
35.71
35.10
35.63
35.05
35.41
37.51
38.01
38.87
36.54
36.54

>80
15.18
14.92
15.22
15.16
14.92
15.06
14.74
14.89
15.28
14.51
14.97
14.97


Total (n):
280,937
23,315
23,865
25,362
26,097
28,150
28,873
29,651
30,449
31,927
33,248

THA: total hip arthroplasty.

© LROI 2020

Hip » Total hip arthroplasty » Demographics » Previous surgery 2014-2019

TABLE Trend (proportion [%] per year) in previous surgeries to the same joint in patients who underwent a primary total hip arthroplasty in the Netherlands in 2014-2019

Year 2014 2015 2016 2017 2018 2019 Total
Primary THA (n) 27,118 27,998 29,577 30,106 31,484 32,682 178,965
Previous surgery to the relevant hip (total)
Proportion¹ (%)
5.0 5.0 4.9 4.8 4.5 4.7 4.8
Osteosynthesis 3.5 3.6 3.6 3.5 3.3 3.5 3.5
Osteotomy 0.8 0.8 0.9 0.9 0.9 0.8 0.9
Arthroscopy 0.3 0.2 0.3 0.2 0.2 0.2 0.2
Girdlestone situation 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Arthrodesis 0.1 0.1 0.1 0.1 0.1 0.0 0.1
Other 1.0 1.0 1.0 0.9 0.8 0.9 0.9

¹ A patient may have undergone multiple previous surgeries to the same joint. As such, the total proportion is more than the total proportion of patients with one or more previous surgeries to the same joint.
THA: total hip arthroplasty.

© LROI 2020