UE Neurovascular

Question 1

What are the borders of the quadrangular space and what resides in it?

Answer 1

Superior border: teres minor
Inferior border: teres major
Medial border: triceps long head
Lateral border: humerus
Contents: posterior humeral circumflex A and axillary N

Question 2

What are the borders of the triangular space and what resides in it?

Answer 2

Superior border: teres minor
Inferior border: teres major
Lateral border: triceps long head
Contents: circumflex scapular A

Question 3

What are the borders of the triceps hiatus and what resides in it?

Answer 3

Superior border: teres major
Lateral border: humerus
Medial border: triceps long head
Contents: profunda brachii A and radial N

Question 4

What injuries can happen if you injury your radial N at the axilla?

Answer 4

• tricep weakness
• wrist drop
• digit extension impaired

Question 5

What is one nerve not in the brachial plexus that has cutaneous innervations and runs w/ medial brachial cutaneous N? What is its segmentation? What does it supply?

Answer 5

• intercostobrachial
• branches from intercostal N from ventral rami T2-T3
• supplies anterior shoulder and brachium

Question 6

What is the parent nerves of intercostal nerves?

Answer 6

ventral rami turn in to intercostal nerves