Table 1 Comparison of radiographic parameters between the group with a JLCA change < 2° (group I) and the group with a JLCA decrease ≥ 2° (group II)
JLCA change < 2° (N = 64) | JLCA decrease ≥ 2° (N = 16) | P value | |
|---|---|---|---|
Preoperative mFTA | − 4.7° ± 2.6° | − 9.1° ± 3.8° | < 0.001 |
Postoperative mFTA | 3.4° ± 2.6° | 2.6° ± 3.0° | 0.301 |
Preoperative JLCA (standing) | 2.1° ± 1.1° | 4.9° ± 1.1° | < 0.001 |
Postoperative JLCA (standing) | 1.7° ± 1.1° | 2.1° ± 1.1° | 0.262 |
Preoperative JLCA (supine) | 1.4° ± 1.0° | 2.1° ± 1.2° | 0.042 |
Postoperative JLCA (supine) | 1.5° ± 1.1° | 1.7° ± 1.2° | 0.530 |
Preoperative differences of JLCA on standing and when supine | 0.7° ± 0.7° | 2.8° ± 1.0° | < 0.001 |
Postoperative differences of JLCA on standing and when supine | 0.2° ± 0.9° | 0.3° ± 0.8° | 0.563 |
Preoperative mMPTA | 85.7° ± 1.9° | 84.7° ± 1.7° | 0.061 |
Postoperative mMPTA | 93.2° ± 2.8° | 94.5° ± 2.7 | 0.088 |
Preoperative mLDFA | 88.2° ± 1.7° | 89.0° ± 2.7° | 0.314 |
Preoperative TPS | 10.0° ± 2.9° | 10.9° ± 3.5° | 0.261 |
Postoperative TPS | 10.5° ± 3.1° | 11.8° ± 3.8° | 0.179 |
Postoperative outlier (mFTA < 0° or > 6°) | 14 (22%) | 5 (31%) | 0.514 |
Postoperative outlier (WBL < 50% or > 70%) | 24 (38%) | 9 (56%) | 0.173 |