Knee (B) Flashcards
(12 cards)
1
Q
standard projections for knee
A
trauma: AP + HBL (on bed)
non-trauma: standing AP + lateral
2
Q
AP knee patient position (trauma)
A
supine on the table with knee and ankle joint in contact with the table, leg extended and knee is not rotated
3
Q
centring point
A
1.5cm distal to the apex of the patella (AP), middle of the superior border of the medial tibial condyle (lateral)
4
Q
collimation
A
- superior to include the distal femur
- inferior to include proximal tibia/fibula
- lateral and medial to include skin margins
5
Q
detector size
A
24cm x 30cm
6
Q
Exposure factors
A
60 kV/ 2.8 mAs
7
Q
SID
A
100-115cm
8
Q
grid
A
no
9
Q
anatomical markers
A
R/L within the primary beam and label “weight bearing” on standing views
10
Q
patient positioning
A
patella should be central and include head of fibula.
11
Q
alternative projections
A
intercondylar patella, skyline patella
12
Q
typical injuries
A
tibial plateau, patella fracture, fibula head, dislocation
