Table 2 Comparison of the parameters according to the age group in male
Male | 50–69 years (n = 114) | 70–89 years (n = 118) | p value |
|---|---|---|---|
Hip–knee–ankle angle (HKA, °) | 5.6 ± 7.3 (− 19.6 to 24.5) | 7.8 ± 6.0 (− 11.6 to 27.6) | 0.033* |
Neck–shaft angle (NSA, °) | 125.2 ± 5.4 (109.9 to 137.1) | 124.8 ± 5.7 (112.7 to 137.2) | 0.583 |
pSAD (°) | 6.0 ± 1.8 (1.1 to 12.2) | 5.7 ± 1.6 (1.2 to 10.3) | 0.210 |
mSAD (°) | 6.1 ± 1.1 (3.8 to 8.8) | 6.1 ± 1.1 (3.5 to 8.8) | 0.954 |
dSAD (°) | 5.2 ± 1.7 (2.1 to 10.3) | 5.4 ± 1.6 (2.1 to 9.5) | 0.349 |
PB (mSAD–pSAD, °) | 0.1 ± 1.9 (− 6.3 to 4.6) | 0.4 ± 1.7 (− 4.5 to 5.2) | 0.212 |
DB (dSAD–mSAD, °) | − 0.9 ± 1.9 (− 4.9 to 5.8) | − 0.7 ± 1.7 (− 6.0 to 3.2) | 0.370 |
GB (dSAD–pSAD, °) | − 0.8 ± 2.9 (− 7.7 to 9.1) | − 0.3 ± 2.8 (− 6.7 to 6.6) | 0.180 |
mLDFA (°) | 88.0 ± 2.8 (80.7 to 96.7) | 88.8 ± 2.4 (82.6 to 96.7) | 0.028* |
Femur length (mm) | 433.9 ± 24.3 (368.9 to 501.5) | 430.8 ± 23.6 (365.1 to 517.1) | 0.335 |
Isthmic distance (mm) | 246.5 ± 22.1 (207.1 to 309.0) | 243.5 ± 25.4 (136.7 to 321.7) | 0.323 |
Isthmic location (%) | 56.7 ± 3.4 (48.9 to 66.7) | 56.6 ± 4.6 (34.1 to 68.7) | 0.975 |
Isthmic diameter (mm) | 12.2 ± 2.0 (8.6 to 18.3) | 12.2 ± 1.9 (8.8 to 19.1) | 0.787 |