Why the patients with Hirayama disease have abnormal cervical sagittal alignment? A radiological measurement analysis of posterior cervical extensors

Table 3 Comparison of all parameters of different muscles in two groups

	LKD (n = 31)	Non-LKD (n = 29)	T value	p Value
Height	175.03 ± 1.07	1.73 ± 1.27	1.17	0.25
Weight	64.18 ± 2.018	64.84 ± 1.72	− 0.25	0.80
BMI	20.86 ± 0.50	21.68 ± 0.57	− 1.06	0.29
CSA (mm²)	1348.52 ± 236.24	1349.47 ± 240.85	− 0.02	0.99
VBA (mm²)	401.46 ± 72.62	366.62 ± 50.21	2.15	0.04*
R-CSA	3.45 ± 0.79	3.76 ± 0.94	^aZ = − 1.22	0.22
C2–C7 Cobb angle (°)	− 1.41 ± 8.19	12.40 ± 12.32	^aZ = − 4.42	0.00**
T1 slope (°)	15.23 ± 5.54	18.11 ± 5.91	− 1.94	0.06
C2–C7 SVA (mm)	17.37 ± 7.72	17.43 ± 9.85	− 0.02	0.98

ISSN: 1749-799X