Dioggo Lectures

Question 1

Which spot of humerus is most susceptible to breaking? Which spot almost never breaks?

Answer 1

Surgical neck

Head

Question 2

The ___________nerve is exposed to a fracture of the surgical neck of the humerus.

Answer 2

Axillary

Question 3

All movements of the shoulder are done at which joint?

Answer 3

Sternoclavicular

Question 4

Which ligament is important when talking about shoulder separation?

Answer 4

Coracolavicular ligament

Question 5

3 grades of shoulder separation

Answer 5

1. A slight displacement of the joint. The acromioclavicular ligament may be stretched or partially torn (no space change)
2. A partial dislocation of the joint in which the acromioclavicular ligament is completely torn, while the coracoclavicular ligaments remain intact.
   * Space is 50% greater than normal
3. A complete separation of the joint. The acromioclavicular ligament, the coracoclavicular ligaments, and the capsule surrounding the joint are torn.

Question 6

6 movements of the Scapula

Answer 6

1. Elevation
2. Depression
3. Flexion
4. Extension
5. Upward Rotation
6. Downward Rotation

Question 7

Acessory nerve has ________innervation. Cervical nerve has _________innervation.

Answer 7

Motor; sensory

Question 8

What nerve innervates rhomboid major and minor?

Answer 8

Dorsal scapula nerve

Question 9

Rhomboid major

Origin

Insertion

Nerve

Function

Answer 9

Origin: Spinous process

Insertion: Medial border of the scapula

Nerve: Dorsal scapula nerve

Function: Retraction of the scapula (adduction)

Question 10

Rhomboid minor

Origin

Insertion

Nerve

Function

Answer 10

Origin: Nucal ligaments and spinous process

Insertion: Medial border of the scapula

Nerve: Dorsal scapula nerve

Function: Retracts and rotates scapula, fixes scapula to thoracic wall

Question 11

Which part of the scapula articulates with the head of the humerus?

Answer 11

Glenoid cavity, forms glenohumoral joint