Table 3 Multiple regression analysis for predicting femoral rotation after surgery in revision total hip arthroplasty patients
Variable | B | β | P-value |
|---|---|---|---|
Constant | 29.5 | – | 0.000 |
2 stage revision | − 3.291 | − 0.26 | 0.01 |
Postoperative Anatomical stem anteversion | − 0.399 | − 0.46 | 0.000 |
CT density of psoas muscle | − 0.129 | − 0.31 | 0.000 |
CT density of gluteus maximus (Gmax) | 0.129 | 0.26 | 0.03 |
CT density of gluteus medius (Gmed) | − 0.172 | − 0.48 | 0.000 |
Regression formula for angle of postoperative femoral rotation | 29.5 − 0.399 × postoperative anatomical stem anteversion − 0.129 × CT density of psoas + 0.129 × CT density of Gmax − 0.172 × CT density of Gmed (− 3.291 with 2 stage revision) (R2 = 0.559) | ||