Latissimus Dorsi

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Lattissimius Dorsi mm    Lattissimius Dorsi: Origin and Insertion

Latissimus Dorsi

Origin: Posterior crest of the ilium (via the Thoracolumbar fascia) 
Posterior sacrum. 
Spinous processes of T7-L5

Insertion: Intertubercular groove (between the greater and lesser tuberosities) of the humerus

Actions: Extension. 
Internal rotation. 
Adduction

Innervation: Thoracodorsal nerve
.

Daily uses: Pushing on the arms of a chair when standing up



 

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Other muscles of the Upper Limb

Infraspinatus

Origin: Posterior surface of the scapula (below the spine of the scapula)
.

Insertion: Greater tuberosity on the humerus
.

Actions: Shoulder abduction, 
External rotation.

Innervation: Suprascapular nerve
.

Daily uses: Brushing hair.

Teres Minor

Origin: Mid section of the lateral border of the scapula

Insertion: Greater tuberosity on the humerus

Actions:External rotation, 
Shoulder adduction

Innervation: Axillary nerve

Daily uses: Brushing hair

Supraspinatus

Origin: Supraspinous fossa

Insertion: Greater tuberosity of the humerus

Actions: Abduction 
Stabilisation of the humerus

Innervation: Suprascapular nerve

Daily uses: Holding shopping bags away from the body

More Anatomy

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Ligaments

Check out strengthening exercises for the rotator cuff

 

This information has been displayed with the kind permission of  SportsInjuryClinic and Get Body Smart who can be found at the links below:

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