Table 2.
The pre- and postoperative results of hemoglobin and hematocrit did not dif-fer significantly. Patients of both groups had a decrease in haemoglobin after surgery, starting from an almost equal basic level of 13.85 g/L (MIS) respectively 13.90 (CON). After the fifth postoperative day the level increased in both groups. The CK-NAC and CRP values showed significant differences on the 1st and 2nd postoperative days for CRP. However, the significance was lost after the results were adjusted for large groups. The mean CRP value reached its highest levels on the 2nd postoperative day and by the 10th postoperative day had fallen to the preoperative starting value. The mean values of CK-NAC reached their highest levels six hours postoperatively and fell by the 10th postoperative day to the preoperative starting value.
| Timing | MIS | CON Hemoglobin | P | MIS | CON Hematocrit | P |
|---|---|---|---|---|---|---|
| Preoperative | 13.85±1.16 | 13.93±1.34 | 0.9109 | 0.39±0.07 | 0.40±0.04 | 0.06485 |
| 2h postoperative | 12.45±1.53 | 11.90±1.58 | 0.3370 | |||
| 4h postoperative | 11.51±1.54 | 12.18±1.18 | 0.1491 | |||
| 6h postoperative | 12.11±1.34 | 12.07±1.34 | 0.9947 | 0.35±0.04 | 0.35±0.04 | 0.7107 |
| 1d postoperative | 11.38±1.48 | 11.33±1.46 | 0.5761 | 0.33±0.04 | 0.33±0.04 | 0.7128 |
| 2d postoperative | 11.25±1.35 | 10.80±1.47 | 0.1656 | 0.33±0.04 | 0.31±0.04 | 0.2358 |
| 5d postoperative | 10.76±1.07 | 10.35±1.44 | 0.2683 | 0.31±0.03 | 0.30±0.04 | 0.1758 |
| 10d postoperative | 11.13±1.19 | 10.67±1.33 | 0.0944 | 0.33±0.03 | 0.31±0.04 | 0.0592 |
| CK-NAC | CRP | |||||
| Preoperative | 94.84±49.81 | 120.46±115.66 | 0.4717 | 0.58±1.86 | 0.32±0.31 | 0.8522 |
| 6h postoperative | 625.10±263.96 | 561.45±319.85 | 0.2435 | 0.96±0.49 | 0.88±0.39 | 0.7286 |
| 1d postoperative | 521.93±211.02 | 469.64±217.60 | 0.1919 | 9.94±4.38 | 12.43±4.18 | 0.0231 |
| 2d postoperative | 381.29±183.14 | 359.61±152.24 | 0.7408 | 17.15±6.81 | 21.07±5.47 | 0.0224 |
| 5d postoperative | 178.16±103.70 | 161.35±85.50 | 0.6317 | 8.51±6.21 | 7.90±3.69 | 0.8951 |
| 10d postoperative | 81.20±47.38 | 79.49±47.65 | 0.8332 | 2.29±2.76 | 2.25±1.20 | 0.1129 |
| Preoperative | 94.84±49.81 | 120.46±115.66 | 0.4717 | 0.58±1.86 | 0.32±0.31 | 0.8522 |
MIS, minimally invasive hip surgery; CON, conventional lateral approach; CRP, C-reactive protein.