Correlation between multifidus muscle atrophy, spinopelvic parameters, and severity of deformity in patients with adult degenerative scoliosis: the parallelogram effect of LMA on the diagonal through the apical vertebra

Table 6 Multiple linear regression analysis of influencing factors and CVA

Influencing factors	Variables	B value	Standard error	t value	P value	R² value
Spinopelvic parameters	PI	0.271	0.20	13.550	< 0.001	0.764
	PT	− 0.237	0.018	− 13.549	< 0.001
	SS	− 0.182	0.018	− 10.156	< 0.001
	Constant	− 1.159	0.361	− 3.215	0.002
Concave or convex LMA at the upper or lower intervertebral level of the apical vertebra	Upper intervertebral level LMA					0.050
	Concave	0.364	0.163	2.229	0.028	–
	Convex	− 0.296	0.116	− 2.545	0.012	–
	Constant	1.700	0.375	4.535	< 0.001	–

PI pelvic incidence, PT pelvic tilt, SS sacral slope, CVA coronal vertical axis, LMA lumbar multifidus atrophy

ISSN: 1749-799X