Parameter | Standard approach | Mini-posterior ap. | p |
---|---|---|---|
CPK-diff 24 h - preop [U/l] | 569.8 ± 535.1 | 551.0 ± 295.6 | p = 0.829 |
CKMM-diff 24 h - preop [U/l] | 553.8 ± 530.0 | 548.7 ± 290.2 | p = 0.952 |
Myoglobin-diff 24 h - preop [μg/l] | 205.4 ± 195.0 | 178.6 ± 143.4 | p = 0.336 |
CPK-diff 48 h - preop [U/l] | 378.4 ± 218.4 | 446.3 ± 236.9 | p = 0.141 |
CKMM-diff 48 h - preop [U/l] | 378.2 ± 218.5 | 437.4 ± 241.9 | p = 0.204 |
Myoglobin-diff 48 h - preop [μg/l] | 78.8 ± 88.4 | 59.9 ± 74.2 | p = 0.254 |
CRP-diff day 3 - preop [mg/l] | 77.5 ± 38.5 | 80.1 ± 56.6 | p = 0.633 |
Operation time [minutes] | 50.9 ± 10.2 | 51.9 ± 11.4 | p = 0.892 |
Blood loss intraoperative [ml] | 382.0 ± 179.9 | 262.7 ± 149.7 | p < 0.001 |
Blood loss Cell Saver 6 hours postop [ml] | 515.2 ± 348.8 | 279.0 ± 194.1 | p < 0.001 |
Blood loss Redon [ml] | 434.0 ± 188.6 | 352.4 ± 207.2 | p = 0.043 |
Blood loss total [ml] | 1331.2 ± 538.6 | 894.2 ± 363.3 | p < 0.001 |
Retransfusion cellsaver [n of patients] | 13 | 5 | p = 0.037 |
Transfusion foreign blood [n of patients] | 3 | 3 | p = 1.0 |
Hb-diff day 3 - preop [g/dl] | 3.5 ± 1.57 | 3.48 ± 1.42 | p = 0.953 |
Pain at rest [VAS] | 1.11 ± 1.1 | 0.63 ± 0.67 | p = 0.01 |
Pain in motion [VAS] | 2.82 ± 1.49 | 2.57 ± 1.45 | p = 0.386 |
Mobilisation alone on ward [days] | 3.72 ± 2.03 | 2.7 ± 1.92 | p = 0.049 |
Using stairs alone [days] | 6.84 ± 2.35 | 5.37 ± 1.95 | p = 0.011 |
Hospital stay [days] | 11.56 ± 3.45 | 9.96 ± 3.02 | p = 0.016 |
SF-36 functional score preop | 26.43 ± 11.79 | 26.37 ± 10.69 | p = 0.901 |
SF-36 funct. score 6 weeks post | 37.45 ± 15.78 | 37.53 ± 16.24 | p = 0.89 |
SF-36 psychological score preop | 43.47 ± 25.87 | 48.18 ± 27.45 | p = 0.523 |
SF-36 psych. Score 6 weeks post | 51.39 ± 29.58 | 52.28 ± 29.62 | p = 0.763 |
WOMAC preop | 62.7 ± 23.6 | 60.5 ± 19.8 | p = 0.824 |
WOMAC 6 weeks postop | 24.1 ± 21.7 | 22.8 ± 17.2 | p = 0.777 |
Oxford hip score preop | 41.6 ± 9.2 | 40.7 ± 6.6 | p = 0.665 |
Oxford hip score 6 weeks postop | 28.6 ± 10.6 | 25.5 ± 8.1 | p = 0.126 |
Cup inclination [degrees] | 42.8 ± 6.6 | 43.7 ± 5.9 | p = 0.583 |
Cup anteversion [degrees] | 24.6 ± 4.9 | 25.1 ± 5.2 | p = 0.644 |
Stem alignment [degrees in varus] | 0.9 ± 1.2 | 1.1 ± 1.1 | p = 0.682 |
Limb length discrepancy [mm] | 0.6 ± 2.7 | 0.4 ± 1.2 | p = 0.581 |
Offset [mm] | 2.8 ± 5.2 | 2.9 ± 4.3 | p = 0.931 |