Blue Boxes 1: Pectoral Scapular and Deltoid Regions

Question 1

What is a sign of an absence of pectoralis major?

Answer 1

The anterior axillary fold is absent and the nipple is more inferior than usual

Question 2

Injury to the long thoracic nerve paralyzes what muscle?

Answer 2

Serratus anterior

Question 3

Injury to what nerve/muscle causes winged scapula?

Answer 3

Long thoracic nerve/serratus anterior

Question 4

What nerve is often injured during knife fights when the limbs would be elevated?

Answer 4

Long thoracic nerve

Question 5

What is the primary clinical manifestation of spinal accessory nerve palsy?

Answer 5

Weakness when shrugging shourlders against resistance, “trapezious”

Question 6

What nerve is vulnerable to injury during mastectomies when the axillary tail of the breast is removed? also during inferior part of axilla surgeries

Answer 6

Thoracodorsal

Question 7

What nerve innervates the rhomboids?

Answer 7

Dorsal scapular

Question 8

The deltoid atrophies when what nerve is damaged?

Answer 8

axillary (C5 - C6)

Question 9

What nerve is usually injured during a fracture of the humerous at the surgical neck?

Answer 9

Axillary

Question 10

What is the cutaneous branch of the axillary nerve?

Answer 10

superior lateral cutaneous nerve of the arm

Question 11

What is the reason for fracture-dislocation of the proximal humeral epiphysis in children?

Answer 11

The joint capsule of the glenohumeral joint, reinforced by the rotator cuff, is stronger than the epiphysial plate

Question 12

What is the most commonly ruptured rotator cuff tendon?

Answer 12

supraspinatus