What does pectoralis minor mean?
The name of the pectoralis minor muscle describes the general location of this muscle.
Pectoralis comes from the Latin word “pectus” meaning breast.
Minor comes from Greek and means “the lesser”.
This is the smaller of the two pectoralis muscles.
Where does the pectoralis minor muscle attach?
It originates on the third, fourth, and fifth rib
It inserts on the coracoid process of the scapula
What actions does the pectoralis minor muscle do?
- Downward Rotation
What are the most common injuries to the pectoralis minor muscle?
The pectoralis minor muscle doesn’t necessarily get injured. However, it is important to note that the nerves, as well as the arteries and veins that feed the arm, all run beneath the pectoralis minor muscle. If the muscle is strained or gets too tight it can compress these structures, causing problems all the way down the arm. At this point it usually fits in under a condition known as Thoracic Outlet Syndrome.
Postures where the pectoralis minor muscle contracts
Postures where the pectoralis minor muscle lengthens
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