lecture 5 Flashcards
pectoral shoulder girdle consist of
clavicle and scapula
pectoral shoulder girdle connects
upper extremity to the thorax via sternoclavicular joint
inferior angle alternative name
inferior pole
root of the spine of the scapula is where?
where the spine meets the medial border
another name for intertubercular groove
intertubercular sulcus
glenoid fossa of scapula faces?
lateral anterior superior
_______ Attaches from the circumference of the glenoid fossa to the anatomical neck of the humerus
GH joint
With arm in full adduction, inferior aspect of capsule (called the axillary recess) is _____________
loose & superior aspect taut
Tendons of _______, ______, _______ and subscapularis blend with the capsule
supraspinatus, infraspinatus, teres minor
glenoid labrum
Comprised of 3 bands: superior, middle, inferior
Glenohumeral Ligament
Glenohumeral Ligament forms a __ shape
Z
Glenohumeral Ligament considered ______
partially capsular
Glenohumeral Ligament limits
horizontal abduction, external/lateral rotation
Coracohumeral Ligament comprised of ___ bands ___ _____
2, superior, inferior
Coracohumeral Ligament is intra or extra capsular
extracapsular
Coracohumeral Ligament limits
external rotation
Transverse Humeral Ligament arches over
the biciptial groove/ sulcus
Transverse Humeral Ligament limits
lateral displacement long head biceps
Coracoacromial Ligament ___ band that arches over ___ ____
one, GH joint
Coracoacromial Ligament limits
Superior displacement of head of humerus, contributes to the coracoacromial arch
_____ are fluid-filled sacs containing synovial fluid, located adjacent to tendons that cross joints. They act to decrease friction between adjacent structures during movement (ie. tendon & joint capsule)
Bursae
Articulating Surfaces, ____, _______
Acromial facet of clavicle, medial acromion
Acromioclavicular Joint classification
Non-axial, plane synovial joint
Superior rotation glenoid faces superior; accompanies ___________
humeral abduction and flexion
Inferior rotation glenoid faces inferior; accompanies ______ and __________
humeral adduction and extension
Superior and Inferior Scapular Rotation what plane
occures in frontal plane
Protraction involves some ______________ in order to allow scapula to appose thoracic wall
medial (internal) scapular rotation
Retraction involves some ____________ in order to allow scapula to appose thoracic wall
lateral (external) scapular rotation
Protraction and Retraction of the Scapula happens in what plane?
transverse (roughly)
Upward Tip/Tilting Scapula rotates so the inferior angle moves ______, and superior border moves ______-
posteriorly, anteriorly
Upward Tip/Tilting of the scap occurs in the ________ plane
sagittal
Capsule and Disc of AC Joint _______; cannot maintain joint integrity independently
Relatively weak
Acromioclavicular Ligament ____ and _____bands maintain joint congruency
Superior , inferior
Acromioclavicular Ligament Limits: One bone _________, _________
overriding another, joint distraction
Superior Transverse Scapular Ligament ______ cross a joint, thus no limitation*
Does not
Superior Transverse Scapular Ligament Arches over the _____________
suprascapular notch
Coracoclavicular Ligament Composed of _____ separate bands
two
Conoid ligament- attaches posteromedial to the ____________
trapezoid ligament
Trapezoid ligament- attaches ______________
anterolateral to conoid
know which AC joint goes horizontal versus verticle
Sternoclavicular Joint articulating surfaces _____,_________,_______
Sternal facet of clavicle, Superolateral manubrium, Superior aspect of costal cartilage of rib 1
SC joint is what type of joint?
saddle joint
SC joint is ____axial
bi
Clavicular Elevation & Depression occur in what plane?
Occurs in frontal/coronal plane; Anterior-posterior axis
Clavicular Protraction & Retraction occur in what plane and axis?
transverse, vertical
Clavicular Rotation what axis
Rotates around mechanical axis of clavicle
SC joint Attaches to the clavicle _______, and to junction of manubrium and first costal cartilage inferiorly
superiorly
Sternoclavicular Ligament ___ and ____bands reinforce the capsule
Anterior and posterior
Costoclavicular Ligament attaches __________ to the clavicle
from first rib superolaterally
Interclavicular Ligament Spans the sternal notch, attaching _________
medial clavicles
which of the following is not an example of a true joint?
scapular thoracic
Interclavicular Ligament Limits: ______,______ clavicular displacement
superior-inferior
