Vastus Intermedius

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

Vastus Intermedius         Vastus Intermedias: Origin and InsertionVastus Intermedius

Origin: Anterior and lateral surfaces of shaft of femur

Insertion: Quadriceps tendon onto base of patella and onto the tibial tuberosity via the patella tendon.

Actions: Knee extension.

Innervation: Femoral nerve (L2-4)

Daily uses: Walking upstairs. 

 

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Other muscles…

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

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