Chapter 4 part 2

Grids are generally not required unless the anatomy measures greater than_____ cm in thickness

10

From a pronated position, which of the following is required for a PA oblique projection of the fourth digit of the hand

45 degrees lateral rotation

Which routine projection of the elbow best demonstrated the radial head and tuberosity free of superimposition

AP oblique with external rotation

Which routine projection of the elbow best demonstrates the olecranon process in profile?

Lateral

how should the humeral epicondyles be aligned for a lateral projection of he elbow?

Perpendicular to image receptor

the interphalangeal joints have an ____ type of joint movement.

ginglymus

What are the names of the two depressions found in the anterior aspect of the distal humerus

radial and coronoid fossa

Which of the following structures is considered to be most posterior

radial tuberosity

The first carpometacarpal joint is classified as a ____joint

saddle

How many projection are required for the AP-acute flexion study of the elbow

two

The CR placement for an AP axial projection (modified Robert's method) of the thumb is at the

first carpometacarpal joint

A PT enters the ED with a possible scaphoid fracture. The PT is unable to assume the ulnar deviation position. Which of the following positions should be performed to confirm the diagnosis

Modified Stecher

Which special projection of the wrist will open up the interspaces on the ulnar side of the wrist?

Radial deviation

What CR angle is required with the modified Robert's method

15 degree proximally (toward the Wrist)

How much rotation of the humeral epicondyles is required for the AP medial oblique projection of the elbow

45 degrees

How much Cr angulation to the long axis of the head is required for the tangential, inferosuperior projection to demonstrate the carpal sulcus(canal)?

25-30 degrees

How many carpal bones are found in the wrist

8

Where is the CR placed for PA projection of the third digit

At the proximal interphalangeal joint

Where is the CR centered for a PA projection of the hand

At the third metacarpophalangeal joint

Which of the following structures is considered to be most lateral?

Capitulum

A PT enters the ED with an elbow injury. The partially flexed AP and lateral positions reveal a possible fracture of the coronoid process. The PT elbow is partially flexed and he refuses to extend it farther. Which the of the following positions/projections should be performed to confirm the fracture of the coronoid process.

Coyle method with 80 degree flexion, CR angled 45 degree away from shoulder

A radiograph of na AP projection of the elbow reveals that there is complete separation of the proximal radius and ulna. What positioning error has been committed?

Excessive lateral rotation

A PT with a history of carpal tunnel syndrome comes to radiology. The physician wants to rule out abnormal calcification in the carpal sulcus. Which of the following projections would best demonstrate this region?

Gaynor-Hart method

A radiograph of the PA scaphoid projection revels extensive superimposition of the scaphoid and adjacent carpals. Which of the following factors can lead to this position

Insufficient Ulnar Deviation

What is the name of the joint found between the proximal and distal phalanges of the first digit?

Interphalangeal

Which of the following structures is considered to be the most proximal

Olecranon process

A patient enters the ED in severe pain with a possible dislocation of the elbow. The patient has the elbow flexed more than 90 degree. Which one of the following routines should be performed to confirm the diagnosis?

Partially flexed AP and limited lateral projection

Why is it important to keep the phalanges parallel to the IR for a PA oblique projection of the hand

Prevents foreshortening of phalanges and obscuring of interphalangeal joint

Which of the following actions will lead to the proximal radius crossing over the ulna?

Pronation of the hand

A radiograph of a tangential, infersuperior projection of the carpal canal reveals that the hamular process is superimposed over the pisiform. Which of the following measures will correct this problem?

Rotate the wrist and hand 10 degrees internally

Which two structures primarily from the hinge-like structure and movement of the elbow joint?

Trochlea and Olecranon process

With the radial head-lateromedial projection, what is the only difference between the four projections

The position of the head and/ or wrist

The central area of the long cylindrical shaft of the radius, ulna, and humerus is called the

body

Which special projection of the wrist is ideal for demonstrating possible calcification in the dorsal aspect of the carpals.

carpal bridge

The joint found between the base of the metacarpal and carpal bone is the

carpometacarpal

The first metacarpophelengeal joint has an type of joint movement

ellipsoidal

Which carpal bone is the smallest

pisiform

A "skier's thumb" is an injury of the

unlar collateral ligament

Which of the following best demonstrates the radial head using the trauma lateral Coyle Method routine

Elbow flexed 90 degrees, CR angled 45 degrees toward shoulder

Which of the following bony structures is found on the distal aspect of the ulna

Head

Which basic projection of he elbow best demonstrates the trochlear notch in profile

Lateral

A lateral elbow radiograph demonstrates about half of the radial head superimposed by the coronoid process of the ulna. Which of the following occurred?

No positioning errors occurred

Which is the most commonly fractured carpal bone

Scaphoid

A PT enters the ED with a possible Bennett's fracture. Which of the following routines should be performed to confirm this diagnosis.

Thumb

What is the purpose of performing the AP partially flexed projections of the elbow?

To provide an AP perspective if the PT cannot fully extend the elbow

A radiograph of the elbow demonstrates the radius directly superimposed over the ulna and the coronoid process in profile. Which projection of the elbow has been performed

medial(internal) rotation oblique

The AP oblique- bilateral hands projection (ball-catcher's position) is performed to evaluate for early signs of

rheumatoid arthritis