Table 6.
Reasons for minor or major revisions of cruciate retaining and posterior stabilized cemented fixed bearing TKA systems for osteoarthritis in the Netherlands in 2007–2016
| Minor revisiona (n = 1,046) |
Major revisionb (n = 2,149) |
Any revisionc (n = 4,377) |
||||
|---|---|---|---|---|---|---|
| CR (n = 333) PS (n = 713) |
CR (n = 911) PS (n = 1,238) |
CR (n = 1,718) PS (n = 2,659) |
||||
| Reason for revision | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) |
| Patellar pain | 102 (30.6) | 18 (26.2) | 84 (9.2) | 145 (11.7) | 549 (32.0) | 842 (31.7) |
| Instability | 138 (41.4) | 263 (36.9) | 327 (35.9) | 284 (22.9)g, h | 477 (27.8) | 567 (21.3)g, h |
| Loosening tibial component | 0 (0.0) | 3 (0.4) | 242 (26.6) | 505 (40.8)g, h | 243 (14.1) | 513 (19.3)g, h |
| Infection | 67 (20.1) | 207 (29.0)f | 161 (17.7) | 252 (20.4) | 244 (14.2) | 499 (18.8)g, h |
| Malalignment | 6 (1.8) | 11 (1.5) | 254 (27.9) | 371 (30.0) | 265 (15.4) | 387 (14.6) |
| Loosening femoral component | 1 (0.3) | 1 (0.1) | 78 (8.6) | 117 (9.5) | 80 (4.7) | 119 (4.5) |
| Arthrofibrosis | 20 (6.0) | 30 (4.2) | 32 (3.5) | 55 (4.4) | 61 (3.6) | 93 (3.5) |
| Revision after removal | 0 (0.0) | 1 (0.1) | 48 (5.3) | 97 (7.8)e | 48 (2.8) | 98 (3.7) |
| Patellar dislocation | 10 (3.0) | 15 (2.1) | 37 (4.1) | 30 (2.4)e | 74 (4.3) | 71 (2.7)e |
| Wear of inlay | 18 (5.4) | 33 (4.6) | 18 (2.0) | 25 (2.0) | 37 (2.2) | 61 (2.3) |
| Periprosthetic fracture | 0 (0.0) | 6 (0.8) | 21 (2.3) | 69 (5.6)f | 21 (1.2) | 75 (2.8)f |
| Loosening patellar component | 10 (3.0) | 14 (2.0) | 6 (0.7) | 9 (0.7) | 20 (1.2) | 31 (1.2) |
| Other reason for revision | 53 (15.6) | 118 (15.3) | 112 (12.3) | 122 (9.9)d | 219 (12.7) | 315 (11.8) |
a
Only insert and/or patella exchange (excluding patella addition).
b
Revision of at least femur or tibia.
c
Any type of revision, including patella addition (CR n = 402; PS n = 555). A patellar component was placed during the primary proce-dure of 17.7% (n = 10,668) of cruciate retaining TKAs and of 28.5% (n = 20.831) of posterior stabilized TKAs.
d
p = 0.03
e
p = 0.01
f
p = 0.001
g
p < 0.001
h
Categories differ significantly for PS compared with CR TKAs after applying a Bonferroni correction (p = 0.05/39 = 0.001).