Lower Extremity Lab Test

What are the foot projections that will be done?

AP Axial, AP Oblique in medial rotation, and mediolateral lateral

What are the ankle projections that will be done?

AP, AP Oblique mortise joint, and mediolateral lateral

What are the calcaneus and lower leg projections that will be done?

Axial Calcaneus, lateral calcaneus, and AP lower leg

What are the knee and patella projections that will be done?

AP Oblique in medial rotation knee, lateral knee, and tangential settegast patella

What are the pelvis and hip projections that will be done?

AP Pelvis, AP hip, and lateral (lauenstein) hip

What is the collimation for AP Axial foot?

1” on sides and 1” beyond calcaneus & distal tip of toes

What is the collimation for AP Oblique (medial rotation) foot?

1” on sides and 1” beyond calcaneus & distal tip of toes

What is the collimation for lateral (mediolateral) foot?

1” on all sides including 1” above medial malleolus

What is the collimation for AP ankle?

1” on sides of ankle & 8” lengthwise to include heel

What is the collimation for AP Oblique Mortise Joint (ankle)?

1” on sides of ankle & 8” lengthwise to include heel

What is the collimation for AP lateral (mediolateral) ankle?

1” on sides of ankle & 8” lengthwise to include heel and 5th metatarsal

What is the collimation for axial calcaneus?

1” above medial malleolus

What is the collimation for lateral calcaneus?

1” past the posterior & inferior shadow of calcaneus

What is the collimation for AP lower leg?

1” on both sides and 1½” beyond ankle and knee joints

What is the collimation for AP Oblique (medial rotation) knee?

10" x 12" lw

What is the collimation for lateral knee?

10" x 12" lw

What is the collimation for tangential (settegast) patella?

5" x 5"

What is the collimation for AP Pelvis?

14" x 17" cw

What is the collimation for AP Hip?

10" x 12" lw

What is the collimation for lateral (lauenstein) hip?

10" x 12" cw

What is the ray angulation for an AP axial foot projection?

10º toward the heel

What is the SID for the AP axial foot projection?

38"

What is the degree of angulation for an axial calcaneus projection?

40º toward head (cephalic)

What is the SID for an axial calcaneus projection?

32"

What is the degree of angulation for a lateral knee projection?

5º towards head (cephalic)3

What is the SID for a lateral knee projection?

39"

What is the centering point for all three foot projections?

Base of 3rd metatarsal

What is the centering point for axial calcaneus?

Near base of 3rd metatarsal

What is the centering point for lateral calcaneus?

1" below malleolus

What is the centering point for AP and AP Oblique Mortise Joint (medial rotation) ankle?

Midpointo

What is the centering point for lateral ankle?

Medial malleolus

What is the centering point for AP lower leg?

What is the centering point for AP oblique (medial rotation) knee?

1/2" inferior to patellar apex

What is the centering point for lateral knee?

1" distal to (below) medial epicondyle

What is the centering point for tangential (settegast) patella?

Is the settegast projection taken in or out of buckey?

Out of bucky

What is the centering point for AP and lateral hip?

Midway between crease in the leg where the pelvis meets the femur

What is the centering point for AP pelvis?

2" below ASIS, overthe symphysis pubis

What is the IR positioning for AP pelvis?

Crosswise (in bucky)

What is the IR positioning for AP hip?

Lengthwise (in bucky)

What is the IR positioning for lateral hip?

Crosswise (in bucky)

How much should you internally rotate the lower limb for AP hip and AP pelvis projections?

15º