Table 1 Baseline characteristics, within one month prior to knee arthroplasty. Patients are grouped according to postoperative change in knee-related Quality of Life
Good outcome group, n = 19 | Poor outcome group, n = 9 | Difference between groups, p-value | |
|---|---|---|---|
Female, n | 12 | 6 | 0.856 |
Age, years, mean (SD) | 67.3 (7.7) | 62.4 (5.4) | 0.1 |
Height (cm), median (range) | 170 (156-184) | 163 (159-181) | 0.438 |
Weight (kg), mean (SD) | 82.8 (11.8) | 83.5 (14.3) | 0.892 |
BMI (m2/kg), mean (SD) | 29 (4.6) | 30 (5.1) | 0.614 |
Symptom duration, years, median (range) | 10 (1.5-26) | 8 (1-20) | 0.263 |
Kellgren and Lawrence score (1-4b) | |||
1-2 | - | - | |
3a, n | 0 | 1 | 0.321 |
3b, n | 1 | 3 | 0.084 |
4a, n | 7 | 1 | 0.214 |
4b, n | 11 | 4 | 0.689 |
Knee Injury and Osteoarthritis Outcome Score, 0-100 | |||
Pain, mean (SD) | 48 (14) | 40 (17) | 0.218 |
Symptoms, median (range) | 32 (18-89) | 32 (18-75) | 0.699 |
Activities of Daily Living, mean (SD) | 62 (11) | 46 (19) | 0.007 |
Sport and Recreation, median (range) | 15 (0-60) | 15 (0-80) | 0.809 |
Knee-related Quality of Life, mean (SD) | 30 (13) | 24 (9) | 0.251 |