Table 5. The changes of pre- and post-operative Harris hip scores (HSS) and complications.
| Variables | Crowe I | Crowe II | Crowe III | Crowe IV | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PSI | CO | P* | PSI | CO | P* | PSI | CO | P* | PSI | CO | P* | ||||
| Harris hip scores | |||||||||||||||
| Pre-op | 56.52±10.42 (n=21) | 55.81±13.28 (n=21) | 0.847 | 52.92±13.05 (n=13) | 54.29±8.96 (n=14) | 0.757 | 44.88±17.11 (n=8) | 43.00±16.91 (n=7) | 0.835 | 40.30±13.76 (n=10) | 41.00±11.22 (n=10) | 0.902 | |||
| Post-op (3 months) | 85.24±3.59 (n=21) | 84.50±3.33 (n=20)† | 0.499 | 85.85±4.36 (n=13) | 84.29±6.28 (n=14) | 0.458 | 83.13±5.06 (n=8) | 77.71±4.31 (n=7) | 0.043 | 71.90±6.71 (n=10) | 70.10±7.06 (n=10) | 0.566 | |||
| Post-op (1 year) | 88.42±4.68 (n=21) | 90.45±3.79 (n=20)† | 0.088 | 89.75±5.33 (n=12)‡ | 87.21±3.31 (n=14) | 0.170 | 88.88±5.46 (n=8) | 82.43±2.94 (n=7) | 0.015 | 87.30±3.53 (n=10) | 83.20±4.26 (n=10) | 0.031 | |||
| Complications (case) | |||||||||||||||
| Deep venous thrombosis | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | |||||||
| Transient paralysis of common peroneal nerve | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | |||||||
| Transient paralysis of femoral nerve | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | |||||||
| Others | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||||||
*, P: P values (Harris hip score: independent-samples t-test); †, because lost to follow-up, a Crowe I patient withdrew from the follow-up 10 weeks after surgery; ‡, because lost to follow-up, a Crowe II patient emigrated to other country 5 months after surgery. PSI, patient-specific guide group; CO, conventional operation group; Pre-op, preoperative; Post-op, postoperative.