Question

what are the muscles that stabilize the scapula?

Answer 1

Muscles stabilizing scapula are

1)TRAPEZIUS -

** origin:medial third of superior nuchal line,external protuberance, ligamentum nuchae, C7 to C12 vertebrae

**Insertion :superior fibres to clavicle, middle fibres to acromion and crest of spine of scapula, lower fibres to deltoid tubercle.

**Action:upward rotation and elevation for superior fibres. Middle fibres helps in retraction. Lower fibres helps in upward rotation and depression.

2) RHOMBOIDEUS MAJOR AND MINOR

**Origin :Rhomboideus major from second to fifth thoracic vertebrae. Minor originates from spines of 7th cervical and 1st thoracic vertebrae.

**Insertion :Major to medial border of scapula. Minor to root of spine of scapula.

**Action: Retraction and medial rotation

3) SERRATUS ANTERIOR

**Origin :1st eight ribs

**Insertion :Antero medial aspect of scapula

**Action :Protraction, Lateral rotation

4)LEVATOR SCAPULAE

**Origin :Transverse processes of C1 to C4

**Insertion :Medial border of scapula

**Action:Elevation, Medial rotation

****Pectoralis minor also helps in protraction and depression of scapula.