Table 2.

Average operative time, blood loss, pre-operative and post-operative lumbo-sacral angles, and lumbo-sacral angles at the last follow-up in the antero-posterior (AP) and anterior (A) groups

	Average operative time (min)	Average blood loss (ml)	Average pre-operative lumbo-sacral angles (°)	Average post-operative lumbo-sacral angles (°)	Lumbo-sacral angles at the last follow-up (°)
AP	497 (380–600)	980 (820-1500)	22.3 (21-24.5)	29.8 (25-31)	28.3 (23-29)
A	190(128-210)*	410 (350-600)*	20.6 (18-23)**	25.7 (24-30)**	23.6 (20-28)**

*p < 0.05, significant difference; **p > 0.05, no significant difference