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Table 3 Clinical and radiologic data evaluated before surgery and during follow-up

From: A comparison of zero-profile anchored spacer (ROI-C) and plate fixation in 2-level noncontiguous anterior cervical discectomy and fusion- a retrospective study

  Group NoPlate Group Plate
  P valuea   P valueb
JOA scores
 Preoperatvie 8.0 ± 1.5 7.4 ± 1.2
 Postoperative 1 month 13.4 ± 0.7 < 0.001 13.5 ± 1.1 0.001
 Postoperative 3 month 13.6 ± 1.0 < 0.001 13.6 ± 0.9 0.002
 Last follow-up 13.7 ± 1.2 < 0.001 13.9 ± 1.4 0.001
NDI scores
 Preoperatvie 36.3 ± 7.6 35.1 ± 8.2
 Postoperative 1 month 13.7 ± 5.3 < 0.001 13.5 ± 6.1 < 0.001
 Postoperative 3 month 13.1 ± 4.9 < 0.001 13.4 ± 6.0 < 0.001
 Last follow-up 12.5 ± 4.0 < 0.001 13.9 ± 6.8 < 0.001
Cervical lordosis (°)
 Preoperatvie 11.1 ± 10.4 10.4 ± 8.9
 Postoperative 1 month 19.2 ± 9.0 < 0.001 18.3 ± 9.7 0.001
 Postoperative 3 month 18.9 ± 8.0 < 0.001 17.9 ± 9.3 0.002
 Last follow-up 18.7 ± 8.6 0.001 17.7 ± 8.3 0.001
  1. aP value is given for comparison between pre-operative and post-operative values in Group NoPlate
  2. bP value is given for comparison between pre-operative and post-operative values in Group Plate