Positioning Review Ch. 4

True/False: The hands are placed in a 45 degree AP oblique position when using the Norgaard method.

False

Name of the joint between the first metacarpal and proximal phalanx of the thumb

First Metacarpal phalangeal (1st MCP)

The name of the joint between the middle and distal phalanges of the forth digit?

Forth distal interphalangeal (4th DIP)

Which carpal contains a "hooklike" process

Hamate

In an erect anatomical position which structure is considered to be most inferior or distal?

Head of Ulna

What is the major disadvantage of performing a PA projection of the thumb rather than a AP?

Increase OID, causing more magnification, and less detail.

Which two bony landmarks are palpated to assist with positioning of the upper limb?

Lateral and medial epicondyles

True/False: Anterior and posterior fat pads of the elbow are best seen on correctly postponed and correctly lateral (AP) elbow projections.

False

True/False: Placing multiple images on the same digital IP is recommended.

False

Which bone of the upper limb contains the coronoid process?

Ulna

What is the total number of bones that make up the entire hand?

27

how many bones make up the phalanges of the hand?

14

How many bones make up the carpal canal?

5

Which clinical indications requires a decrease in a manual exposure factors?

Advanced osteroprosis

where is the central ray centered for a PA projection of the second digit?

Affected PIP joint

Where are the coronoid and radial fuss located

Anterior aspect of the distal humerus

Name of the joint between the forearm and the carpals

Radiocarpal

Name of the joint between the distal radius and ulna

Distal radioulnar

The long axis of the anatomic part being imaged should be placed

Parallel to the long axis of the IR

In what position should the hand be for an PA oblique thumb position?

Pronated

Which carpal is most commonly fractured?

Scaphoid

Which two carpal bones are located most anteriorly as seen on a lateral wrist radiograph?

Scaphoid and trapezium

In what position should the hand be for an AP elbow projection?

Supinated

where is the central ray placed for a PA projection of the hand?

Third MCP joint

True/False: Both hands are examined with one single exposure when using the Norgaard method.

True

True/False: To visualize fat pads surrounding the elbow, exposure factors must be adjusted to see both bony and soft tissue structures.

True

Name of the joint between the two phalanges of the first digit

first interphalangeal (1st IP)

Why should a forearm never be taken as a PA projection?

the radius and ulna cross. (superimposition)

Why is it important to keep the long axis of the digit parallel to the IR?

to reduce distortion of the phalanges, to properly visualize joints, and to demonstrate small fractures