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Mean IDP readings at different stages during surgery.
Notes: 1, baseline; 2, spinous processes under distraction with a distractor; 3, a template inserted; 4, DIAM implanted between spinous processes. Data are presented as mean ± SD (n=9). *P<0.0001.
Abbreviations: DIAM, device for intervertebral assisted motion; IDP, intradiskal pressure; SD, standard deviation.
