Posterior neurovascular triangles

Question 1

What is the quadrangular space?

Answer 1

teres major
teres minor
long head of triceps
surgical neck of the humerus

Question 2

What comes through the quadrangular space?

Answer 2

terminal branches of:
circumflex humeral artery & vein
axillary nerve endings to teres minor and deltoids

Question 3

What does injury of the surgical neck of the humerus may result in?

Answer 3

injury to the axillary nerve

Question 4

What is the triangular space?

Answer 4

teres minor
teres major
long head of triceps

Question 5

What is inside of the triangular space?

Answer 5

circumflex scapular artery

medial to quadrangular space

Question 6

What is the triangular interval?

Answer 6

humerus
long head of triceps
teres major

Question 7

What is inside the triangular interval?

Answer 7

deep brachial artery

Question 8

What is SLAP lesion of the shoulder?

Answer 8

Superior Labrum Anterior to Posterior

upper labrum is torn away from the glenoid fossa

Question 9

How is SLAP lesion of the shoulder caused?

Answer 9

too much force going over the long head of the biceps brachii
this causes it to be torn away from the supraglenoid attachment tearing some of the labrum from the supraglenoid fossa as well

Question 10

What is the scapular foramen?

Answer 10

the sub scapular notch enclosed by the scapular ligament

Question 11

What passes on through the scapular foramen and on top?

Answer 11

suprascapular nerve pass through the foramen
suprascapular artery and vein passes superior to the foramen
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