Article Figures & Data
Figures
- Figure 1
(A) A sagittal, midline view of the cervical spine following a C3–C6 laminoplasty without dome laminotomies. The dorsal migration of the spinal cord following the decompressive effect of the laminoplasty at the C3–C6 levels leads to kinking and compression (red-shaded areas) of the spinal cord by the caudal edge of the C2 lamina and the cranial edge of the C7 lamina. The kinking can be static and/or dynamic. Adding C2 and C7 laminotomies, defined by the red lines, leads to an improved decompression, which is depicted in panel B. (B) The additional decompression afforded by the dome laminotomies prevents any spinal cord kinking. Illustration by Jill K. Gregory, used with permission of ©Mount Sinai Health System.
- Figure 2
A dorsolateral view of the osseous structures at the completion of C3–C6 laminoplasty and C2/C7 dome laminotomies. Illustration by Jill K. Gregory, used with permission of ©Mount Sinai Health System.
- Figure 3
Axial pain before and after C3–C6 laminoplasty with dome laminotomy. Results are proportions of patients with no, mild, moderate, or severe pain. Baseline and early postoperative visit (n = 21): mean, 2.9 months; late postoperative visit (n = 16): mean, 14.9 months.
- Figure 4
Change in mean axial pain score at early and late postoperative time points. There was a significant reduction in the mean pain score at both the early and late postoperative examinations compared with mean baseline pain score. *P < .05 compared to baseline mean axial pain.
- Figure 5
Recovery of neurologic function following C3–C6 laminoplasty with dome laminotomy. There was a significant improvement in hand function at the early and late examinations, and balance impairment improved significantly at the late examination. *P = .0001; +P = .001; ++P < .05 compared to baseline proportion.
- Figure 6
(A) Preoperative sagittal T2 magnetic resonance image which revealed degenerative, superimposed on congenital stenosis with anterior-posterior diameter as low as 4.4 mm. (B) Decompressed C2–C3 level. (C) Decompressed C6–C7 level.
- Figure 7
(A) Preoperative stenosis at the C6–C7 level with an AP diameter of the spinal canal of only 6 mm. (B) Image was obtained after a fall experienced 10 months after surgery which was associated with subjective weakness. It shows an increase in AP diameter of the spinal canal to 10.3 mm with adequate decompression of the spinal cord at the C6–C7 level. Of note, the patient had a stable mild spondylolisthesis at C7–T1 that remained unaltered postoperatively.
- Figure 8
(A) Preoperative sagittal CT. At the C6 level the AP diameter of the osseous spinal canal is 10 mm. (B) The dome laminotomy at C7 as well as the enlargement of the AP diameter of the osseous spinal canal to 14 mm. This is a case relatively early in this case series. The amount of bony resection was relatively more extensive in patients operated on later in the series.
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