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Table 5 Surgery outcomes of patients divided by axial ossification type and sagittal ossification type

From: The influence of ossification morphology on surgery outcomes in patients with thoracic ossification of ligamentum flavum (TOLF)

  Unilateral (n = 14) Bilateral (n = 18) Bridged (n = 16) P value Beak (n = 19) Round (n = 29) P value
JOA score        
Preop JOA score, mean ± SD 6.11 ± 2.22 6.92 ± 1.22 6.63 ± 1.77 0.430 6.03 ± 1.84 6.95 ± 1.59 0.710
Postop JOA score, mean ± SD 7.93 ± 2.29 8.83 ± 1.06 8.50 ± 1.75 0.342 7.74 ± 1.91 8.93 ± 1.43 0.017*
P  < 0.001*  < 0.001*  < 0.001*  < 0.001*  < 0.001*
RR, mean ± SD, % 44.63 ± 22.70 47.88 ± 19.40 48.91 ± 30.27 0.884 38.27 ± 18.52 53.18 ± 25.55 0.034*
Hematoma, no. (%) 0 0 0 0(0) 0(0)
CSF leakage, no. (%) 1(7.1) 2(11.1) 2(12.5) 0.773 2(10.5) 3(10.3) 1.000
Immediate neurologic deterioration, no. (%) 0(0) 2(11.1) 1(6.25) 0.767 0(0) 3(10.3) 0.267
Superficial infection, no. (%) 1(7.1) 1(5.6) 0(0) 0.745 1(5.3) 1(3.4) 1.000
Deep infection, no. (%) 0(0) 0(0) 0(0) 0(0) 0(0)
  1. RR recovery rate, CSF Cerebrospinal Fluid, SD standard deviation
  2. *Statistically significant difference (P < 0.05)