Mitch Medical Healthcare

Articulation

Muscle

Origin

Insertion

Action

Claviculohumeral

Anterior deltoid

Lateral Vs of clavicle, anterior border

Deltoid tuberosity of humerus

Abduction of shoulder joint

Pectoralis major, upper

Anterior surface of sternal Yi of clavicle

Crest of greater tubercle of humerus

Flexion, medial rotation, and horizontal adduction

Sternohumeral

Pectoralis major, lower

Sternum, cartilages of six or seven ribs

Crest of greater tubercle of humerus

Depression of shoulder girdle and adduction of humerus obliquely downward

Scapulohumeral

Coracobrachial"

Apex of coracoid process of scapula

Middle shaft of humerus, opposite deltoid tuberosity

Flexion and adduction of shoulder joint

Middle deltoid

Acromion, lateral margin and superior surface

Deltoid tuberosity of humerus

Abduction of shoulder joint

Posterior deltoid

Spine of scapula, inferior lip of posterior border

Deltoid tuberosity of humerus

Abduction of shoulder joint

Supraspinatus

Supraspinus fossa of scapula, medial 2/J

Greater tubercle of humerus, shoulder joint capsule

Abduction of shoulder joint

Infraspinatus

(nfraspinous fossa of scapula, medial 'h

Greater tubercle of humerus, shoulder joint capsule

Lateral rotation of shoulder joint

Subscapularis

Subscapular fossa of scapula

Lesser tubercle of humerus, shoulder joint capsule

Medial rotation of shoulder joint

Teres major

Inferior angle and lateral border of scapula

Crest of lesser tubercle of humerus

Medial rotation, adduction and extension of shoulder joint

Teres minor

Dorsal surface, lateral border of scapula, upper %

Greater tubercle of humerus, shoulder joint capsule

Lateral rotation of shoulder joint

Vertebrocostohumeral

Latissimus dorsi

Spinous processes of seventh through 12th thoracic vertebrae, through fascia from the lumbar and sacral vertebrae, last three or four ribs, posterior VJ of iliac crest, and slip from inferior angle of scapula

Intertubercular grooves of humerus

Medial rotation, adduction and extension of shoulder joint

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Articulation

Muscle

Origin

Insertion

Action

Costoclavicular

Subclavius

First costal cartilage

Inferior surface of acromial end of clavicle

Pulls shoulder forward and downward

Costoscapular

Pectoralis minor

Third through fifth ribs near the cartilage

Coracoid process of scapula

Pulls shoulder forward and downward

Serratus anterior

Upper eight or nine ribs

Medial border, costal surface of scapula

Scapular abduction and rotation (upward by upper fibers and downward by lower fibers)

Scapuloradial

Biceps, long head

Supraglenoid tubercle of scapula

Tuberosity of radius and lacertus fibrosus

Flexion and assistance with abduction of shoulder joint

Biceps, short head

Apex of coracoid process of scapula

Tuberosity of radius and lacertus fibrosus

Flexion and assistance with adduction of the shoulder joint

Scapuloufnar

Triceps, long head

Infraglenoid tubercle of scapula

Olecranon process of ulna, antebrachial fascia

Shoulder adduction and extension; elbow extension

Vertebroclavicular

Trapezius, upper anterior part

Occiput and cervical vertebrae

Lateral 16 of clavicle

Elevation of clavicle

Vertebroscapular

Trapezius, upper posterior part

Occipital protuberance, superior nuchal line, ligamentum nuchae, spinous process C7

Acromial process of scapula

Elevation and lateral rotation of scapula

Trapezius, middle

Spinous processes of T1-5

Medial margin of acromion and superior lip of spine

Adduction and assistance with lateral rotation of scapula

Trapezius, lower

Spinous processes of T6-12

Tubercle at apex of spine of scapula

Adduction, depression, and assistance with lateral rotation of scapula

Levator scapulae

Transverse processes of C1-4

Medial border between superior angle and root of spine

Elevation and assistance with downward rotation of the scapula

Rhomboid minor

Ligamentum nuchae and spinous processes C7, T1

Root of spine of scapula, medial border

Adduction, elevation, and downward rotation of scapula

Rhomboid major

Thoracic vertebrae, spinous processes T1-5

Scapula, medial border between spine and inferior angle

Adduction, elevation, and downward rotation of scapula