Week 2 - Finger and Thumb Projections

Flashcards about finger and thumb projections

What is the CR direction and CP for a PA finger projection?

CR is perpendicular; CP is the PIP joint.

How is the finger positioned for a PA projection?

Hand flat, finger centered and aligned with IR.

What structures should be included in a PA finger projection?

Affected finger, half of the metacarpal, and adjacent finger.

What is the CR direction and CP for an oblique finger projection?

CR is perpendicular; CP is the PIP joint.

How is the finger positioned for an oblique projection?

Hand prone, finger rotated 45° to IR, separated from other fingers, in same plane.

What structures are included in an oblique finger image?

Affected finger and distal half of the metacarpal.

What is the CR direction and CP for a lateral finger projection?

CR is perpendicular; CP is the PIP joint.

How is the finger positioned for a lateral view?

Affected finger as close to IR as possible, aligned and separated from other fingers.

What structures must be included in a lateral finger projection?

Affected finger and distal half of the metacarpal.

How is the thumb positioned for an AP view?

Internally rotate the hand until the thumb is flat on the IR, with no rotation.

What is the CR direction and CP for an AP thumb?

CR is perpendicular; CP is the MCP joint.

What structures should be visible in an AP thumb projection?

Entire thumb, entire metacarpal, and trapezium.

How is the thumb positioned for a PA projection?

Hand is in lateral position, thumb aligned to IR, entire thumb in same plane.

What is the CP for a PA thumb?

MCP joint.

What structures must be included in a PA thumb image?

Entire thumb, metacarpal, and trapezium.

How is the thumb positioned for an oblique view?

Hand prone, thumb aligned and naturally oblique (45°) to the IR.

What is the CR direction and CP for an oblique thumb?

CR is perpendicular; CP is the MCP joint.

What should be seen in an oblique thumb projection?

Entire thumb, entire metacarpal, and trapezium.

How is the thumb positioned for a lateral view?

Hand prone, fingers curled to bring thumb into true lateral position.

What is the CR direction and CP for a lateral thumb?

CR is perpendicular; CP is the MCP joint.

What structures are included in a lateral thumb projection?

Entire thumb, metacarpal, and trapezium.