The present study intends to: 1）establish a multi-center large-sample randomized controlled trial to explore the technical advantages and surgical indications of the novel surgical technique of CLIF correction for ASD compared with the conventional correction strategy; 2）analyze the postoperative clinical and imaging results, and to explore the related complications and preventive measures; 3） establish 2-year follow-up to further quantify the clinical and radiographical outcomes of CLIF correction.
adult spinal deformtiy;
40yrs≤age≤80yrs;
Lenke-Silva classification II-V grade;
ineffective with conservative treatment;
severe osteoprosis with T value <-2.5;
with preliminary spinal surgery;
ASA score≥III grade;
more than II degree spondylisthesis;