Table 1 Patient’s demographic
General | CCK group | RHK group | p value | |
|---|---|---|---|---|
Age (yr) | 75.1 ± 7.3 | 73.1 ± 6.4 | 77.4 ± 7.7 | p = 0.6 |
Gender (Male/female) | 45/74 | 23/38 | 20/36 | p = 0.82 |
Body mass index (kg/m2) | 29.4 ± 7.2 | 28.9 ± 4.3 | 30.3 ± 6.1 | p = 0.54 |
ROM | 85.9º ± 19.3 | 86.7º ± 17.2 | 84.2º ± 24.9 | p = 0.001 |
HKA | 8.4º ± 7.7 | 7.9 ± 5.5 | 8.9 ± 9.5 | p = 0.001 |
Previous revision implant (%) | 16.2% | 8.1% | 25% | p = 0.037 |
Time until revision (month) | 64.8 ± 38.5 | 67.1 ± 43.6 | 61.3 ± 36.9 | p = 0.021 |
Charlson index | 2 (0–9) | 2 (0–8) | 2 (0–9) | p = 0.75 |
ASA class (%) | p = 0.81 | |||
I | 0 | 0 | 0 | |
II | 48 | 41 | 36 | |
III | 62 | 59 | 64 | |
IV | 0 | 0 | 0 | |
Bone defect | p = 0.047 | |||
AORI I | 8 | 5 | 3 | |
AORI II | 75 | 45 | 30 | |
AORI III | 34 | 11 | 23 | |
KSCS | 38 ± 17.1 | 39.4 ± 16.6 | 36 ± 15.1 | p = 0.035 |
KSFS | 31.8 ± 12.1 | 32.1 ± 11.5 | 30.3 ± 13.2 | p = 0.057 |
KOOS | 40.9 ± 13.1 | 43.2 ± 15.1 | 37.4 ± 9.3 | p = 0.031 |
Reason for revision | p = 0.11 | |||
Aseptic loosening | 53% | 60.6% | 39.3% | |
Infection | 30.7% | 22.9% | 39.3% | |
Instability | 16.3% | 11,5% | 21.4% |