Table 3.
Comparison of projected 2020 to 2030 primary and revision hip and knee arthroplasties and surgical site infections (SSIs) with and without an increasing rate of obesity in the baseline population
| 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 | 2027 | 2028 | 2029 | 2030 | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hip Arthroplasties | ||||||||||||
| Increasing obesity rate | 492,153 | 498,827 | 505,966 | 513,163 | 520,269 | 528,167 | 535,599 | 542,853 | 550,251 | 556,946 | 563,437 | 5,807,631 |
| Stable obesity rate | 490,818 | 497,235 | 504,119 | 511,066 | 517,925 | 525,576 | 532,767 | 539,785 | 546,954 | 553,422 | 559,682 | 5,779,349 |
| Difference | 1,335 | 1,592 | 1,847 | 2,097 | 2,344 | 2,591 | 2,832 | 3,068 | 3,297 | 3,524 | 3,755 | 28,282 |
| Hip SSIs | ||||||||||||
| Increasing obesity rate | 2,693 | 2,748 | 2,805 | 2,862 | 2,919 | 2,980 | 3,039 | 3,097 | 3,157 | 3,212 | 3,266 | 32,778 |
| Stable obesity rate | 2,583 | 2,616 | 2,651 | 2,687 | 2,722 | 2,761 | 2,799 | 2,836 | 2,874 | 2,908 | 2,941 | 30,378 |
| Difference | 110 | 132 | 154 | 175 | 197 | 219 | 240 | 261 | 283 | 304 | 325 | 2,400 |
| Knee Arthroplasties | ||||||||||||
| Increasing obesity rate | 674,187 | 688,618 | 703,574 | 718,031 | 732,332 | 747,413 | 761,366 | 774,253 | 785,882 | 797,411 | 808,183 | 8,191,250 |
| Stable obesity rate | 637,982 | 645,427 | 653,436 | 661,052 | 668,595 | 676,913 | 684,270 | 690,744 | 696,182 | 701,618 | 706,473 | 7,422,692 |
| Difference | 36,205 | 43,191 | 50,138 | 56,979 | 63,737 | 70,500 | 77,096 | 83,509 | 89,700 | 95,793 | 101,710 | 768,558 |
| Knee SSIs | ||||||||||||
| Increasing obesity rate | 2,059 | 2,105 | 2,153 | 2,199 | 2,245 | 2,294 | 2,339 | 2,382 | 2,421 | 2,460 | 2,497 | 25,154 |
| Stable obesity rate | 1,909 | 1,926 | 1,946 | 1,964 | 1,982 | 2,003 | 2,021 | 2,038 | 2,052 | 2,065 | 2,078 | 21,984 |
| Difference | 150 | 179 | 207 | 235 | 263 | 291 | 318 | 344 | 369 | 395 | 419 | 3,170 |