Synonyms
Latin: M. infraspinatus
- Back musculature overview
- To the musculature overview
The underbone muscle (Musculus infraspinatus) is a three-sided, elongated muscle. Like the trapezius muscle, it has three different parts.
Approach/origin/innervation
Approach: Middle facet of the large humerus (Tuberculum mjus humeri) Origin: Fossa infraspinata scapulae (shoulder blade fossa) Innervation: N. suprascapularis, C2The underbone muscle is not a muscle that is specifically trained. It develops with the conventional training of the back muscles. Only in bodybuilding exercises are used, which train the sub-bone muscle specifically. These exercises train the muscle infraspinatus.
- Latissimus extract
- Back insulator
Function
The sub-bone muscle (Musculus infraspinatus) is primarily an external rotator. The upper part of the sub-bone muscle works as a lifter, the lower part as an abductor of the shoulder joint.
