Establishment of a nomogram for predicting the surgical difficulty of anterior cervical spine surgery

BMC Surgery

Table 1 Comparison of the low-difficulty and high-difficulty groups

Factor	Low-difficulty group (N = 151)	High-difficulty group (N = 140)	P
Age*(years)	50.99 ± 10.60	53.84 ± 9.62	0.017
Sex* (male: female)	82:69	98:42	0.006
BMI	24.15 ± 3.07	24.74 ± 2.82	0.154
Number of operation levels*
1	86	7
2	56	77
3	9	53
4	0	3	< 0.001
High signal intensity of spinal cord*
Yes	52	96	< 0.001
No	94	49
OPLL*
Yes	17	74	< 0.001
No	136	64
Sagittal Cervical Circumference	14.36 ± 1.99	14.86 ± 2.14	0.053
Coronal Cervical Circumference	12.41 ± 1.41	12.74 ± 1.38	0.057
Cervical Length	14.56 ± 2.10	14.63 ± 1.83	0.819
Occupying Ratio*	0.37 ± 0.15	0.49 ± 0.11	< 0.001
PT	11.70 ± 0.66	11.74 ± 0.71	0.708
INR	1.01 ± 0.05	1.02 ± 0.06	0.660
APTT	28.06 ± 2.50	27.90 ± 2.71	0.684
FIB	2.64 ± 0.98	2.44 ± 0.73	0.130
TT	18.26 ± 1.03	18.50 ± 1.46	0.189
DD2	0.32 ± 0.37	0.33 ± 0.59	0.924
PLT	213.82 ± 79.45	201.49 ± 51.96	0.210

BMI body mass index, OPLL ossification of the posterior longitudinal ligament
*Statistically significant difference

ISSN: 1471-2482