Article Figures & Data
Figures
- Fig. 1
Axial view of transosseous pathway.
- Fig. 2
Dorsal view of transosseous pathway.
- Fig. 3
CT scan visualizing transosseous tunnel at level of isthmus and disc space.
- Fig. 4
The specimen has been sectioned perpendicular to the transosseous tunnel (arrow), indicating that the tunnel is within bone within its entirety. The S1 endplate is visualized (oval), and the tunnel can be seen posterior to the sacroiliac joint (asterisk).
- Fig. 5
CT scan, sagittal view, of patient presenting with dislodged interbody spacer and infection.
- Fig. 6
Lateral X-ray showing infected hardware removed, clearance of infection, reinstrumentation, and fusion of spine.
- Fig. 7
Sagittal CT myelogram showing post-laminectomy spine.
- Fig. 8
StealthStation navigation image with curette in L5-S1 disc.
- Fig. 9
Lateral postoperative radiograph.
- Fig. 10
Postoperative axial CT image of interbody device position.
Tables
Canal length (mm) Axial width of isthmus (mm) Coronal width of isthmus (mm) Sagittal width of isthmus (mm) Pelvis 1 Right 70 21 27 22 Left 75 20 27 21 Pelvis 2 Right 68 18 26 26 Left 68 19 26 19 Pelvis 3 Right 68 18 25 21 Left 67 17 24 19 NOTE. Each isthmus was the narrowest point of the pathway and an indication of maximal pathway size.
- Table 2
Angles required to obtain transosseous canal from iliac crest to intervertebral disc space
Axial angle (°) Coronal angle (°) Pelvis 1 Right 45 25 Left 45 25 Pelvis 2 Right 43 25 Left 45 23 Pelvis 3 Right 43 22 Left 43 25 - Table 3
Dimensions of first sacral superior vertebral endplate and angle between L5 and S1
S1 endplate dimensions (mm) L5-S1 endplate angle (°) Pelvis 1 15 AP 68 Lateral 45 Pelvis 2 10 AP 56 Lateral 31 Pelvis 3 18 AP 60 Lateral 39 Abbreviation: AP, anteroposterior.
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