1. Shoulder Flashcards
What is the SID for shoulder projections
SID = 110cm
what is the kV for shoulder views
for with and without grids
70-75kV (w/ grid)
70-85kV (no grid)
do you use a grid for shoulder projections
yes
What is the breathing technique for shoulder views
Suspend respiration at end of inhalation
How can you tell that its a anterior shoulder dislocation
humeral head not aligned with glenoid fossa
How can you tell that its a posterior shoulder dislocation
light bulb sign
What are the 2 components of a Hill-Sach lesion
Posterolateral humeral head compression #
Humeral head rests against anteroinferior glenoid
what is a Bankarts trauma and what type of shoulder dislocation is it due to
Anterior-inferior labrum shoulder injury
Due to anterior shoulder dislocation
What direction are the Greater and Lesser tubercles when the shoulder is externally rotated?
Can you see the tubercles
G-Tubercle lateral
L-tubercle anterior (not seen)
What direction are the Greater and Lesser tubercles when the shoulder is internally rotated?
Can you see the tubercles
G-tubercle anterior (not seen)
L-tubercle medial
What direction are the Greater and Lesser tubercles when the shoulder is neutrally rotated?
Can you see the tubercles
G-tubercle & L-tubercle (anterior) not in profile
both cant be seen
what are the 3 points to consider when positioning a patient for the AP Shoulder
Affected shoulder touching IR
Scapulohumeral joint @ centre of IR
Abduct extended arm slightly
How should the shoulder be rotated for an AP shoulder view
which rotation should be used if hill-sachs is suspected
internally or externally
internal if hill sachs
What is the CP for a AP Shoulder view
perpendicular 2.5cm inferior to coracoid
5cm inferior to acromion (& a bit lateral)
What are the 2 positioning evaluation things to look for in a AP Shoulder external rotation
G-tubercle in profile lateral
L-tubercle superimposed over humeral head
