Volume and fat infiltration of spino-pelvic musculature in adults with spinal deformity

Table 4 Muscular Volumes of each muscle group

	Muscular volume
	Min	Max	Mean	SD	95%CI
					Lower	Upper
Spine extensor	0.92	1.89	1.46	0.27	1.33	1.59
Spine flexor	0.85	1.67	1.24	0.22	1.13	1.34
Hip extensor	3.42	6.00	4.83	0.63	4.52	5.13
Hip flexor	4.79	7.13	5.91	0.71	5.57	6.25
Knee extensor	3.70	6.95	5.15	0.86	4.73	5.57
Knee flexor	2.18	3.41	2.88	0.33	2.72	3.04
Total muscles	12.87	19.44	16.67	1.87	15.77	17.57

Reported values are normalized based upon the volume of the right femur of each patient (for example, the mean “Total Muscles” volume = 16.67 femurs volume).