Shoulder Complex Joint Rot Cuff Flashcards
Anatomy
sensory supply to shoulder: supraclavicular nerves from the?
cervical plexus C3-4
sensory supply to shoulder: supraclavicular nerves supply?
the skin over clavicle and over the superior-lateral aspect of the pectoralis major
sensory supply to shoulder: cutaneous branches of dorsal rami penetrate?
deep and superficial back muscles
sensory supply to shoulder: cutaneous branches of dorsal rami supply?
skin on either side of midline of back
joints of the shoulder complex: 3
1 sternoclavicular
2 acromioclavicular
3 glenohumeral
sternoclavicular: articulating bones (3)
1 articular notch on sternum
2 sternal end of clavicle
3 first costal cartilage
sternoclavicular: structural type
synovial, shallow/saddle, articular disc
sternoclavicular: articular disc aka
fibrocartilage meniscus
sternoclavicular: articular disc attatched to
superior to clavicle
inferior to manubrium and first costal cartilage
sternoclavicular: functional type
diarthrotic, triaxial
acromioclavicular: articulating bones (2)
1 concave facet of acromion process
2 convex facet on lateral end of clavicle
acromioclavicular: structural type
synovial, plane
acromioclavicular: functional type
triaxial, diarthrotic, gliding and rotation
acromioclavicular: movements (3)
1 scapular rotation
2 winging
3 tipping
glenohumeral: articulating bones (2)
1 glenoid fossa of scapula
2 head of humerus
glenohumeral: structural type
synovial, ball and socket
glenohumeral: functional type
triaxial, diarthrotic, flexion/extension, abduction/adduction, circumduction, rotation
glenohumeral: ligaments (3)
1 glenohumeral
2 coracohumeral
3 coracoacromial
glenohumeral: glenoid labrum
fribrocartilage meniscus
superficial extrinsic muscles include: (5)
1 trapezius 2 latissimus dorsi 3 levator scapulae 4 rhomboideus major 5 rhomboideus minor
superficial extrinsic muscles connect what to what?
upper limb to axial skeleton
superficial extrinsic muscles innervated by
ventral rami/CN XI
trapezius innervation
CN XI and ventral rai of 3rd and 4th cervical nerves
trapezius proximal attachment: upper
external occipital protuberance, superior nuchal line, and ligamentum nuchae, and spinous process of CV 7
trapezius proximal attachment: middle
spinous processes of TV 1-6
trapezius proximal attachment: lower
spinous processes of TV 7-12
trapezius distal attachment: upper
lateral 3rd of clavicle
trapezius distal attachment: middle
acromion and crest of scapular spine
trapezius distal attachment: lower
tubercle of scapular spine
trapezius action: upper
elevates scapula
trapezius action: middle
adducts (retracts) scapula
trapezius action: lower
depresses scapula
trapezius action: upward rotate scapula via
upper and lower fibers
trapezius: blood supply
dorsal scapular artery
latissimus dorsi: innervation
thoracodorsal nerve (C6-8)
latissimus dorsi: proximal attachment
spines of TV 7-12 and lumbar sacral vertebrae, posterior iliac crest, and ribs 9-12
latissimus dorsi: distal attachment
floor of intertubercular (bicipital) groove
latissimus dorsi: action
extends, addducts, and internally rotates the humerus
latissimus dorsi: blood supply
thoracodorsal artery and a branch of the subscapular artery
levator scapulae: innervation
cervical nerves C3-5 and dorsal scapular nerve C5
levator scapulae: proximal attachment
transverse processes of CV 1-4
levator scapulae: distal attachment
medial border of scapula at level of and above the spine
levator scapulae: action
elevates the scapula at the superior (medial) angle and assists in the downward rotation of the scapula
levator scapulae: blood supply
dorsal scapular artery
rhomboids: innervation
dorsal scapular nerve (C5)
rhomboids: proximal attachment
spines of CV 7 and TV 1 and lower end of ligamentum nuchae (minor)
spines of TV 2-4 (major)
rhomboids: distal attachment
medial border of scapula from level of the spine inferiorly to the inferior angle
rhomboids: action
adducts scapula
rotates glenoid fossa downward
fixes scapula thoracic wall
rhomboids: blood supply
dorsal scapular artery