Standard Knee Views

Question 1

AP Knee: SID

Answer 1

39”

Question 2

AP Knee: Tube Tilt

Answer 2

-5 degrees cephalic (small to average sized patients)
-0 to 5 degrees caudal (thicker patients)

Question 3

AP Knee: Image Receptor Size

Answer 3

-Smallest image receptor available (8 x 10” or 10 x 12”)

Question 4

AP Knee: Patient Position

Answer 4

-Patient lies with the posterior aspect of the affected knee touching the grind and centered to the image receptor.
-The lower extremity on the affected side is internally rotated 15 degrees

Question 5

AP Knee: Central Ray Position

Answer 5

1/2” distal to the apex of the patella

Question 6

AP Knee: Collimation

Answer 6

To the lateral margins of the soft tissues horizontally and to image receptor size (10 x 12”) vertically

Question 7

AP Knee: Breathing Instructions

Answer 7

Suspended Motion (“Don’t Move”)

Question 8

AP Knee: Patient Measurement

Answer 8

Anterior to Posterior, through the knee joint 1/2 distal to the apex of the patella

Question 9

Lateral Knee: Patient Measurement

Answer 9

Laterally, 1” distal to the medial epicondyle

Question 10

Lateral Knee: SID

Answer 10

39”

Question 11

Lateral Knee: Tube Tilt

Answer 11

5 degrees cephalic

Question 12

Lateral Knee: Image Receptor Size

Answer 12

8 x 10” or 10 x 12” in portrait orientation

Question 13

Lateral Knee: Patient Positioning

Answer 13

-Patient lies with affected side with knee flexed 20-30 degrees and on image receptor
-Lateral aspect of the knee if touching image receptor
-Femoral condyles lined ip and long axis of femur is parallel to length of image receptor
-CL leg may be crossed over the thigh of the affected side

Question 14

Lateral Knee: Central Ray Position

Answer 14

1” distal to the center of the medial epicondyle

Question 15

Lateral Knee: Collimation

Answer 15

8 x 10” or 10 x 12”

Question 16

Lateral Knee: Breathing Instructions

Answer 16

Suspended motion (“Don’t move”)

Question 17

Tunnel View (Homblad) : Patient Measurement

Answer 17

A-P through the knee joint at the level of the popliteal fossa

Question 18

Tunnel View (Homblad): SID

Answer 18

40”

Question 19

Tunnel View (Homblad): Image Receptor Size

Answer 19

8 x 10” or 10 x 12”

Question 20

Tunnel View (Homblad): Patient Positioning

Answer 20

-Patient kneels on hands and knees on table so that the femoral shaft is 20-25 degree angle to the central ray with anterior aspect of knee at receptor

Question 21

Tunnel View (Homblad): Central Ray

Answer 21

Through the center of the popliteal fossa

Question 22

Tunnel View (Homblad): Collimation

Answer 22

10 x 12”

Question 23

Tunnel View (Homblad): Breathing Instructions

Answer 23

Suspended motion (“Don’t move”)

Question 24

Tunnel View (CC): Patient Measurement

Answer 24

A-P through the knee joint at the level of the popliteal fossa

Question 25

Tunnel View (CC): SID

Answer 25

31”

Question 26

Tunnel View: Tube Tilt

Answer 26

45 degrees Caudal

Question 27

Tunnel View (CC): Image Receptor Size

Answer 27

8 x 10” or 10-12”

Question 28

Tunnel View (CC): Patient Positioning

Answer 28

Patient lies prone with the affected knee flexed to 45 degrees and ankle supported by object

Question 29

Tunnel View (CC): Central Ray Position

Answer 29

Through the center of the popliteal fossa