Shoulder Flashcards
Upper trapezius
O: medial superior nuchal line & external occipital protuberance
I: lateral clavicle
INN: CN XI (motor spinal part)
A: clavicular elevation; scapular elev, ADD, upward rot’n
Middle trapezius
O: ligamentum nuchae & C7-T12 spinous processes
I: acromion process & spine of scapula
INN: CN XI (motor spinal part)
A: scapular retraction/ADD
Lower trapezius
O: ligamentum nuchae & C7-T12 spinous processes
I: medial spine of scapula
INN: CN XI (motor spinal part)
A: scapular depression & upward rotation
Levator scapulae
O: C1-4 transverse processes
I: medial border scapula above medial spine of scapula
INN: C3,4 ventral rami + dorsal scapular (C5)
A: scapular elevation, adduction & downward rotation
Rhomboid minor
O: ligamentum nuchae, C7 & T1
I: medial border scapula medial spine of scapula
INN: dorsal scapular (C5)
A: scapular elevation, adduction & downward rotation
Rhomboid major
O: T2-5 spinous processes
I: medial border scapula below medial spine of scapula
INN: dorsal scapular (C5)
A: scapular elevation, adduction & downward rotation
Serratus anterior
O: anterolateral ribs 1 to 10 I: medial, ventral border of scapula INN: long thoracic (C5-7) A: scapular protraction/ABD, upward rot’n, scapular elevation
Pectoralis minor
O: anterior ribs 3-5
I: corocoid process
INN: medial and lateral pectoral nerves (C6-T1)
A: scapular anterior tilt
Pectoralis major (SC head)
O: sternum & 1st to 7th costal cartilages
I: lateral lip intertubercular sulcus of humerus
INN: medial & lateral pectoral nerves (C7-T1)
A: Ext, medial rotation
Pectoralis major (C head)
O: medial 2/3 clavicle
I: lateral lip intertubercular sulcus of humerus
INN: medial & lateral pectoral nerves (C5-6)
A: Fx, medial rotation
Latissimus dorsi
O: T7-12, lumbar & sacral spinous processes, posterior iliac crest & lower 3 ribs
I: intertubercular sulcus, inferior angle of scapula
INN: thoracodorsal (C6-8)
A: Ex, ADD, medial rot’n
Supraspinatus
O: supraspinous fossa of scapula
I: greater tubercle of humerus
INN: suprascapular (C5,6)
A: GHJ ABD & stabilisation
Infraspinatus
O: infraspinous fossa of scapula
I: greater tubercle of humerus
INN: suprascapular (C5,6)
A: GHJ lateral rotation & stabilisation
Teres minor
O: lateral dorsal scapula
I: greater tubercle of humerus
INN: axillary (C5,6)
A: GHJ lateral rot’n & stabilisation
Subscapularis
O: subscapular fossa
I: lesser tubercle of humerus
INN: upper & lower subscapular (C5-6)
A: GHJ medial rotation; stabilisation
