Table 2.

Per and postoperative complications.

	Total	Group senior	Group trainee	p
No. of hips	488	341	147
Operation time (min)
Mean ± SD [min; max]	80 ± 18 [34; 172]	74 ± 14 [34; 133]	93 ± 20 [38; 172]	<0.01*
Peroperative complications (%)	18 (3.7%)	14 (4.1%)	4 (2.7%)
Greater trochanteric fractures	11 (2.3%)	8 (2.3%)	3 (2%)	1.00
Femoral perforation	1 (0.2%)	1 (0.3%)	0	1.00
PFF	5 (1%)	4 (1.2%)	1 (0.7%)	1.00
Postoperative complications (%)	44(8.6%)	26 (7.8%)	18 (12.7%)
Dislocation	1 (0.2%)	1 (0.3%)	0	0.30
Infection	8 (1.6%)	1 (0.3%)	7 (4.8%)	0.01*
Aseptic loosening	3 (0.6%)	3 (0.8%)	0	0.56
IPI/psoas pain	22 (4.5%)	18 (5.3%)	4 (2.7%)	0.21
Medius gluteus tendinitis	10 (2%)	8 (2.3%)	2 (1.4%)	0.73
LFCN neuropraxia	12 (2.5%)	2 (0.6%)	10 (6.8%)	<0.01*
LLD unacceptable
Mean LLD (mm)	7 (1.4%)	4 (1.2%)	3 (2%)	0.43
Mean ± SD [min; max]	0.4 ± 1.8 [−1; 19]	0.3 ± 1.5 [−1; 16]	0.6 ± 2.3 [−1; 19]	0.41
Revision (%)	19 (3.9%)	10 (2.9%)	9 (6.1%)	0.095
Revision with implant removal (%)	8 (1.6%)	4 (1.2%)	4 (2.7%)	0.25

SD: standard deviation, PFF: peri-prosthetic fracture, IPI: iliopsoas impingement, LFCN: lateral femorocutaneous nerve, LLD: leg length discrepancy.

^*Significant.