Article Figures & Data
Figures
- Figure 1
Small incisions were made on the skin, and screws were inserted percutaneously through small holes.
- Figure 2
Appearance of guidewires in the C-arm.
- Figure 3
Anteroposterior image of the screws placed on the spine over the guidewires.
- Figure 4
Lateral image of the screws placed on the spine over the guidewires.
- Figure 5
Six months after surgery, osteointegration of the screws to the bone was observed on computed tomography images. In the entire vertebral body, the bone tissue was observed to be populated between the screw threads (red arrows).
- Figure 6
Lateral x-ray image after surgery shows the connection of the Dynesys system after osteointegration.
- Figure 7
Anteroposterior x-ray image after surgery.
Tables
Patient No Age Gender Level Type Stabilization Levels Bone Density T Scores 1 61 M L4 Degenerative disc disease L3-L5 −3.56 2 74 M L2 and L4 Spinal stenosis L2-L5 −2.86 3 58 M L3 Spinal instability (operated) L2-L5 −2.57 4 67 F L3 and L4 Spinal stenosis L2-iliac −3.08 5 60 F L4 Degenerative disc disease L3-L5 −2.88 6 62 M L4 Spondylolisthesis L3-L5 −2.76 7 66 F L2 Spondylolysis T12-iliac −2.69 8 72 M L3 and L4 Spinal stenosis L2-S1 −3.08 9 75 F L4 Spondylolisthesis L3-S1 −3.11 10 69 M L5 Spinal instability (operated) L4-S1 −2.73 11 56 F L2 Spondylolysis T12-S1 −2.81 12 65 F L3 Degenerative disc disease T10-S1 −2.95 13 64 F L4 and L5 Spinal stenosis T10-S1 −2.66 14 62 F L4 Spinal instability (operated) L3-S1 −2.82 15 60 M L4 Degenerative disc disease L2-S1 −2.63 16 69 F L4 and L5 Spinal stenosis T10-iliac −2.58 17 63 M L5 and S1 Spondylolisthesis L4-İliac −2.51 18 62 F L4 Spinal instability (operated) L3-L5 −2.59 19 76 F L3 and L4 Spinal stenosis L2-iliac −3.24 20 72 M L4 Spondylolisthesis L3-L5 −3.41 21 58 F L2 Spinal stenosis L1-L3 −2.62 22 60 F L5 Spinal stenosis L4-S1 −2.54 23 77 M L4 and L5 Spinal stenosis L4-S1 −3.02 Patient No VAS Preoperative VAS Early Postoperative VAS 2-Y Postoperative ODI Preoperative ODI Early Postoperative ODI 2-Y Postoperative 1 8 2 1 68% 17% 3% 2 9 3 1 80% 26% 7% 3 10 3 2 84% 32% 9% 4 8 2 1 64% 14% 6% 5 7 1 0 44% 6% 0% 6 7 2 1 54% 12% 5% 7 7 2 0 52% 11% 0% 8 9 3 0 74% 28% 8% 9 9 3 2 76% 24% 6% 10 8 2 1 70% 22% 6% 11 8 2 0 72% 19% 1% 12 8 3 1 80% 27% 4% 13 7 1 0 48% 9% 0% 14 7 2 1 66% 17% 5% 15 7 2 0 66% 17% 4% 16 8 3 2 76% 23% 7% 17 9 7 7 74% 68% 62% 18 7 2 1 62% 18% 6% 19 7 2 1 64% 16% 4% 20 7 2 1 58% 14% 3% 21 7 2 1 56% 13% 2% 22 8 3 1 66% 17% 6% 23 8 2 1 70% 17% 4% Abbreviations: ODI, Oswestry Disability Index; VAS, visual analog scale.
Descriptive Statistics VAS Mean SD N VAS preoperative 7.83 0.88 23 VAS early operative 2.43 1.16 23 VAS 2-y postoperative 1.13 1.42 23 Pairwise Comparisons Measure: VAS (I) Time (J) Time Mean Difference (IJ) Std. Error P Valueb 95% CI for Differenceb Lower Bound Upper Bound 1 2 5.39a 0.19 <0.001 4.88 5.90 3 6.69a 0.27 <0.001 5.99 7.39 2 1 −5.39a 0.19 <0.001 −5.90 −4.88 3 1.30a 0.13 <0.001 0.96 1.64 3 1 −6.69a 0.27 <0.001 −7.39 −5.99 2 −1.30a 0.13 <0.001 −1.64 −0.96 Descriptive Statistics ODI Mean SD N ODI preoperative 66.26 10.554 23 ODI early operative 20.30 12.197 23 ODI 2-y postoperative 6.87 12.282 23 Pairwise Comparisons Measure: ODI (I) Time (J) Time Mean Difference (IJ) Std. Error P Valueb 95% CI for Differenceb Lower Bound Upper Bound 1 2 45.957a 2.075 <0.001 40.579 51.334 3 59.391a 2.823 <0.001 52.077 66.705 2 1 −45.957a 2.075 <0.001 −51.334 −40.579 3 13.435a 1.037 <0.001 10.749 16.121 3 1 −59.391a 2.823 <0.001 −66.705 −52.077 2 −13.435a 1.037 <0.001 −16.121 −10.749 Measure VAS Preoperative ODI Preoperative VAS preoperative Pearson correlation 1 0.811a P value (2-tailed) <0.001 N 23 23 ODI preoperative Pearson correlation 0.811a 1 P value (2-tailed) <0.001 N 23 23 Abbreviations: ODI, Oswestry Disability Index; VAS, visual analog scale.
↵a Correlation is significant at the 0.01 level (2-tailed).
Measure VAS Early Postoperative ODI Early Postoperative VAS early postoperative Pearson correlation 1 0.960a P value (2-tailed) <0.001 N 23 23 ODI early postoperative Pearson correlation 0.960a 1 P value (2-tailed) <0.001 N 23 23 Abbreviations: ODI, Oswestry Disability Index; VAS, visual analog scale.
↵a Correlation is significant at the 0.01 level (2-tailed).
Measure ODI 2-y Postoperative VAS 2-y Postoperative ODI 2-y postoperative Pearson correlation 1 0.937a P value (2-tailed) <0.001 N 23 23 VAS 2-y postoperative Pearson correlation 0.937a 1 P value (2-tailed) <0.001 N 23 23 Abbreviations: ODI, Oswestry Disability Index; VAS, visual analog scale.
↵a Correlation is significant at the 0.01 level (2-tailed).
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