Table 3.

Occurences of osteonecrosis, redislocation and residual dysplasia

Variable	Open (59 hips)	Arthroscopic (19 hips)	Significance of binary logistic regression
Osteonecrosis, % (n/N)	20 (10/50)	5.9 (1/17)	p = 0.334
Redislocation, % (n/N)	28.8 (17/59)	0 (0/19)	p = 0.005
Residual dysplasia, % (n/N)	62 (31/50)	23.5 (4/17)	p = 0.002
Mean postoperative AC angle (range)	25.96° (13° to 40°)	22.65° (11° to 34°)	p = 0.075*
Pathological AC angle	50 (25/50)	23.5 (4/17)	p = 0.088**

^*Asymptotic (2-sided) chi-square

^**Exact Significance (2-sided) chi-square