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AOI Chart- Shoulder/ Upper Back

Rhomboid Minor and Major

Minor:

  • A: Retracts and elevates Scapula
  • O: Spinous Process of C7- T1
  • I: Medial boarder of Scapula

Major:

  • A: Retracts and elevates Scapula
  • O: Spinous Process of T2-T5
  • I:Medial boarder of Scapula

Trapezius

Pectoralis Minor and Major

Minor:

  • A: Scapular depression, protraction, downward rotation, and tilt
  • O: Anterior surface, 3rd through 5th ribs
  • I: Scapula

A: Scapular elevation and upward rotation, Scapular retraction, Scapular depression

O: Occipital bone and Spinous processes of C7 through lower Thoracic vertebrae

I: Clavicle and Scapular spine

Major:

  • A: Shoulder flexion - first 60 degrees; Shoulder extension - first 60 degrees
  • O: Clavicle and Sternum, costal cartilages of first 6 ribs
  • I: Lateral lip of humerus

Deltoid

A: Shoulder abduction, flexion, medial rotation, and horizontal adduction

O: Lateral 3rd of clavicle and Scapula

I: Humerus

Latissimus Dorsi

A: Shoulder extension, adduction, medial rotation, hyperextension

O: Spinous processes of T7 through L5, posterior surface of sacrum, iliac crest, and lower 3 ribs

I: Medial groove of humerus

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