Table 5.
Cumulative minor and major 8-year revision rates of cemented fixed bearing total knee arthroplasties for osteoarthritis by type of TKA system, stratified for sex and age, in the Netherlands in 2007–2016 (n = 133,841)
| Type of revision, sex | CR TKA system 8-year revision |
PS TKA system 8-year revision |
||
|---|---|---|---|---|
| Age, years | n | rate (%) (CI) | n | rate (%) (CI) |
| Minor (only insert and/or patella exchangea) | ||||
| Male | ||||
| < 60 | 4,015 | 1.8 (1.4–2.5)b | 4,842 | 3.7 (3.0–4.7)b |
| 60–69 | 8,193 | 1.1 (0.8–1.5) | 9,835 | 1.8 (1.4–2.2) |
| ≥ 70 | 8,624 | 0.7 (0.4–1.2) | 10,365 | 1.3 (1.0–1.7) |
| Total | 20,844 | 1.1 (0.9–1.3)b | 25,061 | 2.0 (1.7–2.3)b |
| Female | ||||
| < 60 | 5,876 | 1.2 (0.9–1.6)b | 7,648 | 2.7 (2.1–3.4)b |
| 60–69 | 13,499 | 0.8 (0.6–1.1) | 16,400 | 1.2 (0.9–1.5) |
| ≥ 70 | 20,187 | 0.4 (0.3–0.6)b | 23,984 | 0.8 (0.7–1.0)b |
| Total | 39,596 | 0.7 (0.6–0.8)b | 48,064 | 1.3 (1.1–1.4)b |
| Major (including femur or tibia) | ||||
| Male | ||||
| < 60 | 4,015 | 4.2 (3.3–5.3)b | 4,842 | 7.0 (5.6–8.7)b |
| 60–69 | 8,193 | 2.0 (1.6–2.5)b | 9,835 | 3.3 (2.7–3.9)b |
| ≥ 70 | 8,624 | 1.1 (0.9–1.5) | 10,365 | 1.5 (1.2–2.0) |
| Total | 20,844 | 2.1 (1.8–2.4)b | 25,061 | 3.4 (3.0–3.8)b |
| Female | ||||
| < 60 | 5,876 | 5.2 (4.4–6.2) | 7,648 | 4.7 (4.0–5.5) |
| 60–69 | 13,499 | 2.6 (2.2–3.1)b | 16,400 | 3.8 (3.3–4.4)b |
| ≥ 70 | 20,187 | 1.7 (1.5–2.0) | 23,984 | 2.0 (1.8–2.3) |
| Total | 39,596 | 2.5 (2.3–2.7)b | 48,064 | 3.0 (2.8–3.3)b |
a
Excluding patella addition.
b
p < 0.05 for PS compared with CR TKAs.