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Table 1 Comparisons of clinical results between the two groups

From: One-stage posterior laminectomy with instrumented fusion and foraminotomy for cervical ossification of posterior longitudinal ligament with radiculopathy pain

Clinical features Group A (n=24) Group B (n=24) p value
Age (years), mean (SD) 61.0±12.6 60.5±10.1 0.89
VAS score for neck
 Preoperative 4.0±1.6 3.7±1.3 0.62
 Postoperative 1.6±0.9 1.6± 1.1 0.89
 2-year follow-up 0.8±0.6 0.9 ± 0.7 0.66
VAS score for arm
 Preoperative 5.9±1.7 5.6±1.9 0.632
 Postoperative 3.5±1.2 2.0±1.0 0.0
 2-year follow-up 1.5±0.7 0.7± 0.6 0.0
Follow-up duration (mon) 31.3 ± 5.0 30.9 ±5.6 0.81
Operative duration (min) 98.9 ± 15.3 112.5 ± 12.0 0.001
Operation blood loss (ml) 176.3± 53.4 188.1±79.4 0.55
Postoperative drainage amount (ml) 298.8± 86.6 275.4± 71.4 0.31
JOA
 Preoperative 9.3± 2.1 9.7± 2.0 0.58
 Postoperative 12.7 ± 2.1 13.6 ± 1.9 0.11
 JOA recovery rates 43.5% ± 22.3% 54.3% ± 19.0% 0.76