The Subscapularis Muscle: A Proposed Classification System

Table 1

Distribution of muscle bellies according to sex and body side.

Muscle type	Sex [ (%)].		Body side [ (%)].
	Female	Male	Right	Left
I	1 (2.2)	0 (0.0)	0 (0.0)	1 (3.2)
II	2 (4.4)	0 (0.0)	1 (2.9)	1 (3.2)
III	17 (37.8)	4 (19.1)	12 (34.3)	9 (23.0)
IV	15 (33.3)	5 (23.8)	11 (31.4)	9 (23.0)
V	6 (13.3)	6 (28.6)	5 (14.3)	7 (22.6)
VI	2 (4.4)	3 (14.3)	3 (8.6)	2 (6.5)
VII	0 (0.0)	2 (9.5)	1 (2.9)	1 (3.2)
VIII	0 (0.0)	1 (4.8)	1 (2.9)	0 (0.0)
IX	2 (4.4)	0 (0.0)	1 (2.9)	1 (3.2)