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. Author manuscript; available in PMC: 2016 Feb 11.
Published in final edited form as: J Neurosurg Spine. 2015 May 8;23(2):144–152. doi: 10.3171/2014.12.SPINE14535

Table 2. Comparison of radiographic data of 27 patients with a minimum of 12 months of follow-up.

Group & Measurement Preop Immediate Postop Postop p Value*
Allograft (n = 19)
Diagnostic measurements
 C1–2 lordosis (°) 36.4 31.1 32.1 0.228
 C2–7 lordosis (°) 15.2 16.1 15.0 0.541
 C2–7 SVA (mm) 27.3 27.5 32.2 0.005
 POCA (°) 100.9 101.6 100.1 0.234
Autograft (n = 8)
Diagnostic measurements
 C1–2 lordosis (°) 317 29.1 29.4 058
 C2–7 lordosis (°) 20.2 8.6 9.6 0932
 C2–7 SVA (mm) 19 18.3 217 0.028
 POCA (°) 100 105.7 104.9 0.344

POCA = posterior occipitocervical angle.

*

Difference between immediate postoperative imaging and final postoperative imaging according to Wilcoxon signed-rank test. Boldface indicates significance.