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Table 2 Improvement of kyphosis and statistical results

From: Halo traction combined with posterior-only approach correction for cervical kyphosis with Neurofibromatosis-1: minimum 2 years follow-up

Parameters

Mean ± SD

T value

P value

Pre-Tc vs. Post-Tc

61.3 ± 19.7 vs. 33.2 ± 11.2

12.71

<0.01

Post-Tc vs. Post-Op

33.2 ± 11.2 vs. 10.6 ± 3.7

10.56

<0.01

Pre-Tc vs. Post-Op

61.3 ± 19.7 vs.10.6 ± 3.7

13.90

<0.01

Post-Op vs. Follow-up

10.6 ± 3.7 vs.9.7 ± 5.2

1.68

0.11