Forearm and Elbow

Question 1

When performing the AP forearm position, a line drawn through the humeral epicondyles should be –1– to the IR.

Answer 1

PARALLEL

Question 2

The CR should be directed to the –1– when performing lateral forearm exam.

Answer 2

Mid-shaft of ante-brachium

Question 3

The narrowed area just distal to the radial head is known as the –1–.

Answer 3

Radial neck

Question 4

When performing the AP Oblique elbow with medial rotation, the radius and ulna will appear –1–.

Answer 4

crossed

Question 5

What 3 body joints should be in the same plane when performing routine forearm and or elbow?

Answer 5

Shoulder, elbow, wrist

Question 6

Another name for the semi-lunar notch is the –1–.

Answer 6

Trochlear notch

Question 7

What process and fossa fit together when the arm is in extension?

Answer 7

Olecranon process will be within the Olecranon fossa.

Question 8

Why is it important to include soft tissue when collimating for the lateral elbow exam?

Answer 8

For visualization of the posterior fat pads. Indicates injury of the elbow joint.

Question 9

What hand action is performed when a AP projection of the elbow or forearm is performed?

Answer 9

Supinate hand

Question 10

How many degrees of flexion are necessary for the lateral position/projection of the forearm and elbow?

Answer 10

90

Question 11

How many degrees of rotation are necessary to oblique elbow exams?

Answer 11

45

Question 12

Name 2 structures that must be superimposed on a lateral forearm radiograph.

Answer 12

1) distal radius and ulna

2) humeral epicondyles

Question 13

What structure is demonstrated in profile when the AP elbow with medial rotation oblique is performed?

Answer 13

Coronoid process

Question 14

The –1– is demonstrated in profile on a lateral elbow position.

Answer 14

Olecranon process

Question 15

What humeral structure articulates with the radial head?

Answer 15

The capitulum of the humerus articulates with th the flattened head of the radius.

Question 16

What humeral structure articulates with the ulna?

Answer 16

The Trochlea of the humerus articulates with the ulna at Trochlea notch.

Question 17

Which bone of the forearm is the medial structure?

Answer 17

Ulna

Question 18

When performing a forearm study, the collimation should be open to include from the elbow joint to the proximal row of carpals. Name the proximal row of carpals beginning on the lateral side.

Answer 18

Scaphoid or Navicular
Lunate or Semilunar
Triquetrum or Triangular
Pisiform or Is Pisiform

Question 19

Which elbow joint will demonstrate the radial head and neck free of superposition?

Answer 19

AP Oblique with lateral rotation

Question 20

How and where should the CR be directed when performing an elbow study?

Answer 20

Perpendicular and directed to the elbow joint

Question 21

The radial tuberosity should be facing –1– when the lateral forearm or elbow study is performed.

Answer 21

Anteriorly

Question 22

For most CR systems, the green tips should be placed at the –1– for a forearm study.

Answer 22

fingertips

Question 23

For most CR systems, the green strips should be placed at the –1– for an elbow study.

Answer 23

Humerus

Question 24

When performing an AP projection of the forearm/elbow, what might you need to have the patient do in order to obtain a “true” AP view?

Answer 24

Lean laterally to place forearm in a true supinated position

Question 25

When performing a lateral forearm/elbow, what is the position of the hand?

Answer 25

Lateromedial

Question 26

Another name for the Capitulum is the –1– or –2–,

Answer 26

1) Hippo

2) Lateral Condyle

Question 27

Another name for the Trochlea is the –1–.

Answer 27

Medial Condyle

Question 28

The Coronoid Fossa is on the –1– surface of the elbow and will be filled with a bony process when the arm is –2–.

Answer 28

1) Anterior

2) Flexed