The relationship between the degeneration and asymmetry of the lumbar multifidus and erector spinae muscles in patients with lumbar disc herniation with and without root compression

Table 3 Results of the correlation analyses between the CSA values of the groups and clinical features

Group		Age	BMI	Duration of LBP	VAS resting	VAS activity
Non-rad	Right MF (CSA, mm²)	0.104	0.023	− 0.031	− 0.219	− 0.055
	Left MF (CSA, mm²)	0.089	− 0.024	− 0.093	− 0.181	− 0.002
	Right ES (CSA, mm²)	0.174	0.520^*	− 0.059	− 0.119	− 0.022
	Left ES (CSA, mm²)	0.270^*	0.482^*	− 0.093	− 0.052	0.062
	Right TCSA (Right MF + Right ES, mm²)	0.184	0.462^*	− 0.061	− 0.170	− 0.036
	Left TCSA (Left MF + Left ES, mm²)	0.271^*	0.422^*	− 0.114	− 0.108	0.055
Rad	Right MF (CSA, mm²)	− 0.281^*	0.120	− 0.165	− 0.093	− 0.138
	Left MF (CSA, mm²)	− 0.125	0.220	− 0.007	− 0.089	− 0.051
	Right ES (CSA, mm²)	− 0.027	0.088	− 0.073	0.183	0.133
	Left ES (CSA, mm²)	0.016	− 0.004	− 0.074	0.270	0.208
	Right TCSA (Right MF + Right ES, mm²)	− 0.110	0.116	− 0.116	0.135	0.076
	Left TCSA (Left MF + Left ES, mm²)	− 0.032	0.079	− 0.070	0.211	0.169

*Significant correlation at the level of 1%, MF: lumbar musculus multifidus, ES: lumbar musculus erector spinae, VAS: visual analogue scale, LBP: low back pain

ISSN: 1749-799X