UNIT II Practice Quiz

How many bones make up the hand and wrist?

• 14

• 32

• 27

• 28

Answer explanation

27 bones make up the hand and wrist

5 digits (fingers)

5 Metacarpals (palm)

8 carpals (wrist)

How many phalanges does the 1st digit have?

• 1

• 2

• 3

• 5

Answer explanation

The 1s digit (thumb)- has only 2 phalanges

Proximal and distal phalanages

Digits 2-5 have 3 phalanges

Proximal, middle, and distal phalanages

In anatomical position the thumb is medial?

• True

• False

Answer explanation

In anatomical position, the thumb is located on the lateral side

What is the name of the joint between the distal and middle phalanx of digits 2-5 called?

• Interphalangeal joint (IP)

• Distal Interphalangeal joint (DIP)

• Proximal Interphalanageal joint (PIP)

• Carpometacarpal joint (CMC)

Answer explanation

DIP- joint between distal and middle phalanx

PIP- joint between middle and proximal phalanx

MCP- joint between proximal phalanx and metacarpal

CMC- joint between metacarpal and carpal

IP- joint between distal and middle phalanx of the THUIMB

List the proximal row of carpal bones

• trapezium, trapezoid capitate, hamate

• scaphoid, lunate, trapezium, hamate

• scaphoid, lunate, triquetrum, pisiform

• pisiform, lunate, capitate, hamate

Answer explanation

Proximal row: (Starting from the thumb)- Scaphoid, lunate, triquetrum, pisiform

Distal row: Trapezium, trapezoid, capitate, hamate

Use the Acronym:

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If wanting to demonstrate the scaphoid better which form of deviation would be done?

• Ulnar deviation

• Radial deviation

• Cephalic deviation

• Caudal deviation

Answer explanation

Ulnar deviation would demonstrate the scaphoid. By deviating the wrist toward the ulnar side will help to open up and reduce foreshortening of the scaphoid bone

IF we wanted to see the bones on the medial aspect of the wrist (hamate, pisiform, triquetrum, and lunate), we would want to perform radial deviation

Which two carpal bones articulate with the radius?

• scaphoid and pisiform

• scaphoid and lunate

• lunate and pisiform

• lunate and triquetrum

Answer explanation

The radius articulates directly with the Scaphoid and Lunate. The articular disk separates the triquetrum from the radius and ulna

This entire area makes up the Radiocarpal Joint

I should review the bones and joints of the hand?

• True

• False

Answer explanation

It is important to know the anatomy of the hand and wrist. Not only for your Unit exam but in general as a Rad Tech.

This image is located on page 127 in Bontrager. I highly suggest reviewing it

Thumb projection

• PA, PA Oblique, Lateral

• PA, AP Oblique, Lateral

• AP, PA Oblique, Lateral

• AP/PA, Pa Oblique, Lateral

Answer explanation

Protocol for a thumb: CR @ 1st MCP joint

AP, PA Oblique, Lateral

AP- flip the thumb completely over. Done to Reduce OID

PA Oblique- hand is in a natural 45 degree position when flat

Lateral-rotate until thumb is at 90 degrees

Demonstrates: Distal phalanx to trapezium

2-5 digit anatomy must include _______ phalanx to distal ______ with visible joint

• proximal, proximal

• distal, proximal

• proximal, distal

• distal, distal

Answer explanation

2nd-5t digits must include distal phalnx to distal metacarpal with visible joints.

Fingers: PA, PA Oblique, and Lateral

Digit 2 rotated medially

Digit 3-5 rotate laterally

Oblique view-45 degrees

CR @ PIP joint