CCEP CCEP Radiology & Imaging for Extremities 2

Question 1

A 'sail sign' on a lateral elbow radiograph is caused by which finding?

Accepted Answer

Anterior fat pad elevation from joint effusion

Answer

The sail sign is elevation of the anterior fat pad on a lateral elbow X-ray, indicating joint effusion often from an occult fracture such as a radial head fracture.

Question 2

Which radiographic measurement assesses acetabular coverage of the femoral head and identifies hip dysplasia?

Accepted Answer

Center-edge angle of Wiberg

Answer

The center-edge angle of Wiberg measures acetabular coverage of the femoral head; values below 25° indicate insufficient coverage consistent with dysplasia.

Question 3

Which extremity condition benefits most from real-time dynamic ultrasound evaluation?

Accepted Answer

Tendon tears and dynamic tendon instability

Answer

Ultrasound allows dynamic real-time imaging of tendons during movement, revealing tears, subluxation, and tendon instability not apparent on static imaging.

Question 4

A 'light bulb' sign on an AP shoulder radiograph suggests which diagnosis?

Accepted Answer

Posterior shoulder dislocation

Answer

In posterior shoulder dislocation, the humeral head is locked in internal rotation, creating a symmetric 'light bulb' appearance on the AP view.

Question 5

Bohler's tuber joint angle on a lateral calcaneus X-ray normally measures which range?

Accepted Answer

20–40°

Answer

Bohler's angle normally measures 20–40°; a decrease below 20° suggests a calcaneal compression fracture with collapse of the posterior facet.

(CCEP) Certified Chiropractic Extremity Practitioner Practice Test

(CCEP) Certified Chiropractic Extremity Practitioner Practice Test

CCEP CCEP Radiology & Imaging for Extremities 2