Scapular Region Learning Objectives Flashcards
neurovascular tract: scapular notch
-contents: suprascapular nerve and suprascapular artery
-transverse scapular ligament –> nerve is inferior, artery is superior (usually)
neurovascular tract: medial border of scapula
-contents: dorsal scapular nerve and dorsal scapular artery
-both run right along border
neurovascular tract: triangular space
-contents: circumflex scapular artery
-created by inferior teres minor, superior teres major, and long head of triceps brachii
neurovascular tracts: triceps hiatus
-contains radial nerve and profundal brachii artery
-between long head of tricep and inferior teres major
neurovascular tracts: quadrangular space
-contains axillary nerve and posterior circumflex humeral artery
-formed by inferior teres minor, long head of triceps brachii, superior teres major, and shaft of humerus
bursae
sac filled with synovial fluid and lined by synovial membrane
bursae functions
provide cushion to reduce friction between bone and tendon
scapular region bursae
-subacromial
-subdeltoid
-subtendinous
subacromial bursae
decreases friction between supraspinatus tendon and acromion
subdeltoid bursae
between deltoid tendon and greater tubercle of humerus
subtendinous of subscapularis bursae
between subscapularis tendon and coracoid process
subacromial space
-supraspinatus muscle
-scapular bursae
coracoacromial ligament and coracoid process
-GH joint capusle
see pictures in slides
what neurovascular structures would be injured based on bone fracture at medial border of scapula?
dorsal scapular nerve and artery
collateral circulation
-scapular anastomosis –> connection of 2 arteries
-allows for different pattern of blood flow if there is a “road block” from joint position, occlusion, surgical ligation, etc.
see picture on slides for diagram on scapula
