Orthoroentgenography: Key Concepts and Techniques in Radiography

may cause back pain

indications for leg length discrepancies in adults

developmental growth, more common in lower limbs

indications for leg length discrepancies in Children

Epiphysiodesis

surgery of premature fusion of epiphysis that retards growth

Orthoroentgenography

Radiography of long bones

with minimal magnification using a ruler

-Epiphysiodesis

-Leg lengthening

corrections for leg length discrepancies

x-ray bones seperaetly

in Orthoroentgenography what do you do if there if the unilateral images of lower limb has a discrepancy of more than 1" difference

• Both limbs imaged for comparison

• Bell Thompson ruler used, taped to table

• Possible unilateral images if lower limb discrepancy is more than 1" difference

Orthoroentgenography procedure

Bell Thompson ruler used, taped to table

what type of ruler is used for Orthoroentgenography

with bucky

Bucky or no bucky for Orthoroentgenography

• Shielding

• Close collimation

• No movement of patient or ruler between images

Pt protection for Orthoroentgenography

14 X 17" IR/ 3 views

casssette size for Orthoroentgenography

70- 80 kV

KV range for Orthoroentgenography

- AP hip - CR to neck of femur

- AP knee - ¾" distal to apex of patella

- AP ankle - midway between malleoli

lower limb images

AP Shoulder - CR 2" inferior & medial to lateral border of shoulder

AP elbow - CR to mid elbow

AP wrist - Mid wrist

upper limb views

1. hip

2. knee

3. ankle

1. shoulder

2. elbow

3. wrist

what joints are included in a long bone study of the legs and arms.

premature fusion of epiphysis that retards growth

What does epiphysiodesis refer to

when limb has a discrepancy of more than 1" difference

When would unilateral images be taken of the lower leg? Usually they are done together on the same IR. When is it recommended that they are imaged separately?