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The impact of COVID-19 on the orthopaedic patient in Slovenia: Hip and knee replacement surgery, 90-Day mortality, outpatient visits and waiting times

Vesna Levašič
Vesna Levašič
, 
Denia Savarin
Denia Savarin
 and 
Simon Kovač
Simon Kovač
   | Jun 28, 2022
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Article Category: Research Article
Published Online: Jun 28, 2022
Page range: 155 - 162
Received: Aug 02, 2021
Accepted: May 16, 2022
DOI: https://doi.org/10.2478/sjph-2022-0021
Keywords
© 2022 National Institute of Public Health, Slovenia, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Figure 1.

Comparison of surgery volumes of THR in 2019 and 2020 per month.
Comparison of surgery volumes of THR in 2019 and 2020 per month.

Figure 2.

Simple Error Bar comparing 95% CI of two medians of THR per month in 2019 and 2020.
Simple Error Bar comparing 95% CI of two medians of THR per month in 2019 and 2020.

Figure 3.

Comparison of surgery volumes of KR in 2019 and 2020 per month.
Comparison of surgery volumes of KR in 2019 and 2020 per month.

Figure 4.

Simple Error Bar comparing 95% CI of two medians of KR per month in 2019 and 2020.
Simple Error Bar comparing 95% CI of two medians of KR per month in 2019 and 2020.

Demographics of patients in 2019 and 2020.

Type of operation Gender 2019 2020
N° % Age at operation (±SD) N° % Age at operation (±SD)
Primary THR Male 1610 46% 66.64 (±10.26) 1269 45% 66.14 (±10.87)
Female 1920 54% 69.18 (±10.24) 1523 55% 69.71 (±10.50)
Primary Total and Partial KR Male 1157 36% 67.80 (±8.54) 929 38% 67.97 (±8.84)
Female 2034 64% 70.12 (±8.38) 1494 62% 70.19 (±8.67)
Revision HR Male 168 48% 69.28 (±11.13) 123 39% 69.84 (±11.99)
Female 184 52% 73.99 (±9.23) 194 61% 75.03 (±10.52)
Revision KR Male 84 39% 68.13 (±9.74) 65 41% 68.40 (±7.84)
Female 129 61% 69.83 (±10.01) 94 59% 71.53 (±8.80)
Sum of THR and KR Male 3019 41% 67.96 (±9.92) 2386 42% 68.09 (±9.89)
Female 4267 59% 70.78 (±9.47) 3305 58% 71.62 (±9.62)

Reasons for revision for hip and knee replacements.

Reason for revision Hips
 Knees
2019
 2020
 x2df(1)
 2019
 2020
 x2df(1)
N° N° p-value N° N° p-value
2-stage revision 20 22 0.503 22 21 0.390
Aseptic loosening 117 99 0.579 34 32 0.298
Deep infection 42 48 0.224 82 50 0.160
Dislocation 37 21 0.074 0 0 NA
Broken Implant 12 9 0.673 0 0 NA
Malalignment 0 0 NA 21 21 0.313
Other 41 28 0.232 29 19 0.636
Pain 10 27 0.001 20 6 0.036
Periprosthetic fracture 73 63 0.781 5 10 0.056
Chi-square test x2df(7) p=0.025 x2df(6) p=0.073

90-day mortality after primary and revision HR and KR.

Type of operation 2019 2020 x2df(1)
N° of operations N° of deaths in 90-days % of deaths N° of operations N° of deaths in 90-days % of deaths p-value
Primary THR 3691 15 0.4 3436 14 0.4 0.994
Primary Total and Partial KR 3191 4 0.1 2423 8 0.3 0.100
Revision HR 352 11 3.1 317 14 4.4 0.379
Revision KR 213 5 2.4 159 2 1.3 0.444
x2df(3) p=0.408
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Language:
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Medicine, Clinical Medicine, Hygiene and Environmental Medicine
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