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Muscles of Shoulder
FAB - Muscles OIAN
| Question | Answer |
|---|---|
| Trapezius O | Superior Nuchal line; EOP; Ligamentum nucae; SP's of C7-T12 |
| Trapezius I | Lat. 1/3 of superior clavicle; acromion; spine of scap. |
| Trapezius N | CN 11/Accessory C3-C4 |
| Trapezius A | Elevation; retraction; depress |
| Deltoid O | Lateral 1/3 of clavicle; lat margin of acromion; inf. edge of spine of scap. |
| Deltoid I | deltoid tuberosity of humerus |
| Deltoid N | Axillary nerve, C5-C6 |
| Deltoid A | Flexes and med. rotates arm; abducts arm; extends arm |
| Rhomboid Minor O | SP's of C7-T1; bottom of ligamentum nuchae |
| Rhomboid Minor I | Medial border of Scap base @ root |
| Rhomboid Minor N | dorsal scapular C5 |
| Rhomboid Minor A | retraction; rotates lat. angle of scap inferiorly |
| Rhomboid Major O | SP's T2-T5 |
| Rhomboid Major I | Medial border of scap base |
| Rhomboid Major N | Dorsal scanpular C5 |
| Rhomboid Major A | retraction; rotates lat. angle of scap inferiorly |
| Levator Scapulae O | TP's of C1-C4 |
| Levator Scapulae I | medial border of scap base btwn spinal root & superior angle. |
| Levator Scapulae N | Dorsal Scapular C5; Ventral rami C3-C4 |
| Levator Scapulae A | Elevation; Rotates lat. angle of scap inferiorly |
| Infraspinatus O | Medial 2/3 of infraspinatus fossa of Scap. |
| Infraspinatus I | Mid facet on posterior greater tubercle of humerus |
| Infraspinatus A | Rotator cuff muscle - lat rotation of arm |
| Infraspinatus N | Suprascapular nerve C5-C6 |
| Supraspinatus O | Medial 2/3 of supraspinatus fossa of Scap |
| Supraspinatus I | Superior facet on greater tubercle of humerus |
| Supraspinatus N | suprascapular nerve C5-C6 |
| Supraspinatus A | Rotator cuff muscle - abduction of arm |
| Teres Minor O | Lateral portion - Upper 2/3 of the flattened area of Scap. |
| Teres Minor I | Inf. facet of posterior greater tubercle of humerus |
| Teres Minor N | Axillary nerve C5-C6 |
| Teres Minor A | Rotator cuff muscle - lat. rotation of arm |
| Teres major O | lat. border - lower 1/3 of scap. |
| Teres major I | Medial lip of intertubercular groove of humerus |
| Teres major N | Lower subscapular nerve C5-C7 |
| Teres major A | Rotator cuff muscle - medial rotation & extension of arm |
| Subscapularis O | Medial 2/3 of subscapular fossa |
| Subscapularis I | Lesser tubercle of humerus |
| Subscapularis N | Upper and Lower Subscapular nerves - C5-C7 |
| Subscapularis A | Rotator cuff muscle - medial rotation of arm |
| Serratus Anterior O | Lateral surface of Ribs 1-8/9 |
| Serratus Anterior I | costal surface of medial border of scap |
| Serratus Anterior N | Long thoracic nerve C6-C7 |
| Serratus Anterior A | protraction and upward rotation of scapula, abduction above 90 degrees |
| Latissimus Dorsi O | SP's T6-L5; Iliac crests; Ribs 9-12; Thoracolumbar fascia |
| Latissimus Dorsi I | Interturbercular groove of humerus |
| Latissimus Dorsi N | Thoracodorsal nerve C6-C8 |
| Latissimus Dorsi A | Adduction; internal rotation; extension |
| Pectoralis Major O | Medial 1/2 of clavicle; ant surface of sternum; 1st 7 costal cartilages; aponeur. of Extern. oblq. |
| Pectoralis Major I | lateral lip of intertubercular groove of humerus |
| Pectoralis Major N | Medial & lateral pectoral nerves |
| Pectoralis Major A | Adduction, medial rotation, flexion of arm |
| Pec Minor O | ant/sup borders of ribs 3-6 |
| Pec Minor I | coracoid process of scap |
| Pectoralis Minor A | Depress, protract scapula |
| Pectoralis Minor N | Medial pectoral nerve (C6, C7, C8) |
| Subclavius O | 1st rib |
| Subclavius I | groove on inferior surface of mid 1/3 of clavicle |
| Subclavius A | Depress clavicle; stabilize SC joint |
| Subclavius N | Nerve to the subclavius |