Table 2 Intraclass correlation coefficient for radiographic measurements
Variable | Intraclass correlation | 95% CI | p value | |
|---|---|---|---|---|
Center-Edge (CE) angle (°) | Left | 0.909 | 0.878 to 0.933 | < 0.001 |
Right | 0.968 | 0.957 to 0.977 | < 0.001 | |
Sharp angle (°) | Left | 0.949 | 0.931 to 0.963 | < 0.001 |
Right | 0.921 | 0.894 to 0.941 | < 0.001 | |
Acetabular coverage (%) | Left | 0.917 | 0.888 to 0.938 | < 0.001 |
Right | 0.955 | 0.938 to 0.967 | < 0.001 | |
Tönnis angle (°) | Left | 0.855 | 0.807 to 0.892 | < 0.001 |
Right | 0.919 | 0.891 to 0.940 | < 0.001 | |
Femoral neck-shaft angle (°) | Left | 0.959 | 0.944 to 0.970 | < 0.001 |
Right | 0.943 | 0.922 to 0.958 | < 0.001 | |
Inclination (°) | ||||
Preoperative | Left | 0.992 | 0.989 to 0.994 | < 0.001 |
Right | 0.991 | 0.988 to 0.994 | < 0.001 | |
Postoperative | Left | 0.992 | 0.990 to 0.994 | < 0.001 |
Right | 0.988 | 0.984 to 0.991 | < 0.001 | |
Anteversion (°) | ||||
Preoperative | Left | 0.975 | 0.965 to 0.981 | < 0.001 |
Right | 0.979 | 0.972 to 0.985 | < 0.001 | |
Postoperative | Left | 0.966 | 0.954 to 0.975 | < 0.001 |
Right | 0.965 | 0.952 to 0.974 | < 0.001 | |
Ante-Inclination (AI) (standing) (°) | ||||
Preoperative | Left | 0.958 | 0.942 to 0.970 | < 0.001 |
Right | 0.969 | 0.958 to 0.977 | < 0.001 | |
Postoperative | Left | 0.960 | 0.945 to 0.970 | < 0.001 |
Right | 0.965 | 0.953 to 0.975 | < 0.001 | |
Ante-Inclination (AI) (sitting) (°) | ||||
Preoperative | Left | 0.976 | 0.967 to 0.982 | < 0.001 |
Right | 0.975 | 0.966 to 0.982 | < 0.001 | |
Postoperative | Left | 0.972 | 0.962 to 0.979 | < 0.001 |
Right | 0.971 | 0.961 to 0.979 | < 0.001 | |
Pelvic tilt (PT) (°) | ||||
Preoperative | standing | 0.984 | 0.979 to 0.989 | < 0.001 |
sitting | 0.986 | 0.981 to 0.990 | < 0.001 | |
Postoperative | standing | 0.983 | 0.977 to 0.988 | < 0.001 |
sitting | 0.987 | 0.983 to 0.991 | < 0.001 | |
Pelvic incidence (PI) (°) | 0.981 | 0.974 to 0.986 | < 0.001 | |
Sacral slope (SS) (°) | ||||
Preoperative | standing | 0.980 | 0.973 to 0.985 | < 0.001 |
sitting | 0.987 | 0.982 to 0.990 | < 0.001 | |
Postoperative | standing | 0.985 | 0.979 to 0.989 | < 0.001 |
sitting | 0.988 | 0.984 to 0.991 | < 0.001 | |
Lumbar lordosis (LL) (°) | ||||
Preoperative | 0.983 | 0.977 to 0.988 | < 0.001 | |
Postoperative | 0.985 | 0.978 to 0.989 | < 0.001 | |
Sagittal vertical axis (SVA) (mm) | ||||
Preoperative | 0.997 | 0.996 to 0.998 | < 0.001 | |
Postoperative | 0.999 | 0.998 to 0.999 | < 0.001 | |