Table 4 Postoperative complications and patient-reported outcomes to 6 months post-surgery according to BMI category and arthroplasty type
Overall (n = 1,337) | THA (n = 399) | TKA (n = 938) | BMI < 35 (n = 882) | BMI ≥ 35 (n = 455) | |
|---|---|---|---|---|---|
Complications, n (%) | |||||
Acute to 6 months post-surgery | 508 (38.0) | 130 (32.6) | 378 (40.3) | 325 (36.8) | 183 (40.2) |
Major complications, n (%) | |||||
Acute to 6 months post-surgery | 143 (10.7) | 45 (11.3) | 98 (10.4) | 94 (10.7) | 49 (10.8) |
Acute to discharge | 68 (5.1) | 22 (5.5) | 46 (4.9) | 45 (5.1) | 23 (5.1) |
From discharge to 6 months post-surgery | 78 (5.8) | 23 (5.8) | 55 (5.9) | 50 (5.7) | 28 (6.2) |
Oxford Score at 6 months post-surgery, (0–48), mean (SD)l | |||||
Oxford Hip Score | 41.7 (7.50)a | 41.7 (7.50)a | - | 41.5 (7.82)b | 42.4 (6.25)c |
Oxford Knee Score | 38.2 (7.99)d | - | 38.2 (7.99)d | 38.6 (7.90)e | 37.8 (8.13)f |
EQ-VAS at 6 months post-surgery (0–100), mean (SD)l | 75.1 (18.7)g | 76.6 (18.1)h | 74.5 (18.9)i | 76.5 (18.1)j | 72.5 (19.6)k |
Patient-rated improvement from surgery, n (%) | |||||
Much worse | 22 (1.6) | 3 (0.8) | 19 (2.0) | 13 (1.5) | 9 (2.0) |
A little worse | 18 (1.3) | 4 (1.0) | 14 (1.5) | 14 (1.6) | 4 (0.9) |
About the same | 39 (2.9) | 9 (2.3) | 30 (3.2) | 27 (3.1) | 12 (2.6) |
A little better | 161 (12.0) | 38 (9.5) | 123 (13.1) | 102 (11.6) | 59 (13.0) |
Much better | 987 (73.8) | 319 (79.9) | 668 (71.2) | 646 (73.2) | 341 (74.9) |
Missing | 110 (8.2) | 26 (6.5) | 84 (9.0) | 80 (9.1) | 30 (6.6) |