Efficacy and safety of anterior cervical discectomy and fusion (ACDF) through mini-incision and posterior laminoplasty (LAMP) for treatment of long-level cervical spondylosis: a retrospective cohort study

Table 2 NDI, JOA Scores and VAS of the upper limb of Groups A and B

	Group	Preoperation	2 years after operation	P-value
NDI score	Group A	59.3 ± 5.7	59.3 ± 5.7	0.784
	Group B	59.3 ± 5.7	29.8 ± 10.1	0.854
	P value	0.814	0.758
JOA score	Group A	10.2 ± 3.6	14.6 ± 1.2	0.048*
	Group B	9.7 ± 4.2	14.2 ± 1.7	0.035*
	P value	0.757	0.325
VAS of the upper limb	Group A	5(3–8)	2(2–3)	0.026*
	Group B	5(3–7)	2(2–3)	0.037*
	P value	0.685	0.568

NDI the neek disability index, JOA Japanese Orthopaedic Association, VAS visual analogue scale
*P < 0.05 versus Group B using t-test

ISSN: 1471-2482