ACROMIOCLAVICULAR JOINT

 

 
Acromioclavicular joint

DESCRIPTION: The articular structures are acromial end of clavicle and the medial end of the acromion. It has a fibrous capsule strengthened by ligaments. It also has an intra-articular disc.

LIGAMENTS:

NERVE SUPPLY:

BLOOD SUPPLY:

MOVEMENTS: Generally related to movements of the shoulder girdle but limited. The movements of the scapula are as follows

         Shrugging (ie elevation and depression)  by gravity aided by serratus anterior and pectoralis minor.

         Protraction by serratus anterior and pectoralis minor aided minimally by latissimus dorsi.

         Retraction is by trapezius, rhomboideus major and minors assisted by gravity.

         Forward rotation is by trapezius and serratus anterior.

         Backward rotation is brought about by relaxation of trapezius and serratus anterior but in active backward rotation  levator scapulae, rhomboids and pectoralis minor are used.

Gallery

Neutral

Elevation (shrugging)

Depression

Forward rotation

Backward rotation

Skin

Interior

Bones

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Creator: Oluwole Ogunranti