Article Figures & Data
Figures
- Figure 1
The SurgiFile tool is demonstrated with the thin area of the exposed (a) cutting surface, (b) main toroidal drive body, (c) irrigation inlet, and (d) the surgical drill motor.
- Figure 2
(a) The SurgiFile tool is demonstrated here completing an inside-to-outside decompression along the entire length of the neural foraminal corridor. Because only the dorsal surface of the working blade is active, the SurgiFile tip can be used directly over the exposed (b) thecal sac and nerve root. (c) SurgiFile side. (d) Standard side. (e) Facet joint.
- Figure 3
The landmarks of the neural foramen are shown in the axial CT scan image. (a) Lateral foramen; (b) proximal recess.
- Figure 4
(a) Axial A-P foraminal sizes; and (b) sagittal foraminal areas are shown.
- Figure 5
Comparison of sagittal CT scans showing (a) medial proximal recess areas before (left) and after (right) use of SurgiFile tool; (b) lateral foraminal areas before (left) and after (right) use of SurgiFile tool; (c) medial foraminal areas before (left) and after (right) use of standard tools; and (d) lateral foraminal areas before (left) and after (right) use of standard tools.
- Figure 6
(a) Postoperative change in Axial A-P foraminal distance; and (b) percentage of change in the sagittal foraminal area.
- Figure 7
(a) Preoperative macroscopic visual comparison of the SurgiFile versus the standard sides demonstrates the greater facet preservation overall in the SurgiFile side after neural decompression; (b) Postoperative comparisons of the; (c) Standard side on axial CT demonstrates greater qualitative preservation of the facet joints; and the (d) SurgiFile side.
Tables
Proximal Recess Lateral Foramen SurgiFile Standard SurgiFile Standard Preop Postop Preop Postop Preop Postop Preop Postop Cadaver 1 L2—3 81 119 75 110 82 132 95 105 Cadaver 1 L3—4 60 132 60 100 75 130 75 100 Cadaver 1 L4—5 93 166 98 130 97 160 107 130 Cadaver 1 L5—S1 95 140 95 124 96 162 100 120 Cadaver 2 L2—3 62 95 70 75 75 100 80 85 Cadaver 2 L3—4 70 105 65 85 70 100 70 80 Cadaver 2 L4—5 50 100 70 95 70 110 75 106 Cadaver 2 L5—S1 80 105 80 100 100 120 100 100 Average 73.875 120.25 76.625 102.38 83.125 126.75 87.75 103.25 Proximal Recess Lateral Foramen SurgiFile Standard SurgiFile Standard Preop Postop Preop Postop Preop Postop Preop Postop Cadaver 1 L2—3 1800 3700 2100 3000 1900 4000 2400 2900 Cadaver 1 L3—4 1700 4300 1950 3200 2200 4500 2800 3200 Cadaver 1 L4—5 1450 4100 1850 3100 1700 4000 2700 3000 Cadaver 1 L5—S1 1400 3000 1600 2400 1500 3500 2600 2600 Cadaver 2 L2—3 1900 3500 1750 3000 2000 2900 1900 1900 Cadaver 2 L3—4 2400 3200 1550 3000 3200 3800 1800 2100 Cadaver 2 L4—5 1900 2700 1350 2200 2500 2900 2000 2400 Cadaver 2 L5—S1 1900 2600 1700 2400 2300 2900 1850 1900 Average 1,806.25 3,387.50 1,731.25 2,787.50 2,162.5 3,562.5 2,256.30 2,500.00 Proximal Recess Lateral Foramen SurgiFile Standard SurgiFile Standard Cadaver 1 L2—3 1800 3700 2100 3000 Cadaver 1 L3—4 1700 4300 1950 3200 Cadaver 1 L4—5 1450 4100 1850 3100 Cadaver 1 L5—S1 1400 3000 1600 2400 Cadaver 2 L2—3 1900 3500 1750 3000 Cadaver 2 L3—4 2400 3200 1550 3000 Cadaver 2 L4—5 1900 2700 1350 2200 Cadaver 2 L5—S1 1900 2600 1700 2400 Average 1,806.25 3,387.50 1,731.25 2,787.50 Proximal Recess Lateral Foramen SurgiFile Standard SurgiFile Standard Cadaver 1 L2—3 105 42 110 20 Cadaver 1 L3—4 150 45 104 15 Cadaver 1 L4—5 182 65 135 11 Cadaver 1 L5—S1 114 50 133 0 Cadaver 2 L2—3 84 71 45 0 Cadaver 2 L3—4 34 100 20 16 Cadaver 2 L4—5 42 62 16 20 Cadaver 2 L5—S1 37 41 26 2 Average 93,5 59,5 73,625 10,5
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