TEST 3 Flashcards
A hand is displaced correctly in supination or pronation? which position?
pronation - PA
Among all 5 digits, which digit have 2 phalanges?
thumb - 1st digit
Which digit has 3 phalanges?
2 to 5th
A sesamoid bone is located near which digit?
1st digit
What is the movement for 1st CMC joint?
Saddle
List the 3 joints for 1st digit from proximal to distal
CMC - MCP - IP
The head of the metacarpal articulates with the proximal phalanx makes up which joint
MCP
The head of proximal phalanx articulates with the base of distal phalanx make up which joint?
1st IP joint
The base of distal phalanx articulates with the head of middle phalanx make up which joint?
DIP joint (2-5)
The base of the middle phalanx articulates with the head of the proximal phalanx make up which joint?
PIP ( 2- 5)
Give the movement for the following joints:
1. IP
2. MCP
3. CMC
- ginglymus
- ellipsoidal
- sellar
Is the movement for CMC joint different in each digit? If so, determine the movement for each of them.
YES
CMC in thumb: saddle (sellar)
CMC in 2-5: plane (gliding)
List the techniques (SID, kVp, CR, patient position, collimation includes which anatomy) for PA HAND
SID: 40”
kVp: 50-60
CR: 3rd MCP
Pt position: pronate hand, slightly abduct digits
Collimate: include wrist + 1” of distal forearm
When you are doing a PA for an AFFECTED DIGIT (2-5), where is the CR?
CR at PIP (2-5)
Can you do a PA for 1st digit? If not, what is the alternative?
NO due to increased OID
AP
Where is the CR for 1st digit
CR: MCP joint
What anatomy you should include when collimating the digits?
distal metacarpal
Which digits are taken in the Mediolateral projection?
2
Which digit/s are taken in the Lateromedial PA Oblique projection?
3-5
4 & 5th digits are taken in which projection
Lateromedial
How do you distinguish normal PA from Oblique PA for HAND ?
Look at head and space of/between MCP joint
What are the position for 1st digit
AP & Lateral
List the techniques (SID, kVp, CR, IR size, patient position, collimation includes which anatomy) for 1st DIGIT
SID: 40
50-60 kVp
CR: MCP
IR: 8 x 10
position:
-internally rotate & place dorsal aspect on IR (AP)
-pronate hand & rotate till lateral (L)
Collimation: 1st metacarpal & trapezium
What anatomy do you need to include when taking image for 1st digit
1st metacarpal & trapezium