RESULTS	Postoperative posterior salient and compression of anterior border of vertebral body improved in two groups ( P < 0.01 ) , there was no significant difference in degree of improvement between two groups ( P > 0.05 ) ; but both loss existed at final follow-up ( P < 0.01 ) , there was no significant difference in loss of posterior salient between two groups ( P > 0.05 ) .\