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All data were expressed as the mean ROM ± SD. The ODI score (A) and VAS score (B) were evaluated and compared between MC-PMMA group and PMMA group preoperatively, postoperatively, 1 month, 6 months and 12 months postoperatively. * (P < 0.05) indicates a significant difference between the corresponding groups (as indicated by the horizontal bar). The VAS and ODI were evaluated by three doctors
