CCEP Radiology & Imaging for Extremities Flashcards
6 cards from real CCEP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CCEP Radiology & Imaging for Extremities flashcards as text
A 'sail sign' on a lateral elbow radiograph is caused by which finding?
Answer: Anterior fat pad elevation from joint effusion
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.
Which radiographic measurement assesses acetabular coverage of the femoral head and identifies hip dysplasia?
Answer: Center-edge angle of Wiberg
The center-edge angle of Wiberg measures acetabular coverage of the femoral head; values below 25° indicate insufficient coverage consistent with dysplasia.
Which extremity condition benefits most from real-time dynamic ultrasound evaluation?
Answer: Tendon tears and dynamic tendon instability
Ultrasound allows dynamic real-time imaging of tendons during movement, revealing tears, subluxation, and tendon instability not apparent on static imaging.
A 'light bulb' sign on an AP shoulder radiograph suggests which diagnosis?
Answer: Posterior shoulder dislocation
In posterior shoulder dislocation, the humeral head is locked in internal rotation, creating a symmetric 'light bulb' appearance on the AP view.
Bohler's tuber joint angle on a lateral calcaneus X-ray normally measures which range?
Answer: 20–40°
Bohler's angle normally measures 20–40°; a decrease below 20° suggests a calcaneal compression fracture with collapse of the posterior facet.
Adhesive capsulitis (frozen shoulder) demonstrates which characteristic finding on shoulder arthrography?
Answer: Reduced joint volume and contracted capsule (rim sign)
Adhesive capsulitis shows markedly reduced joint volume on arthrography with a contracted capsule and reduced contrast filling known as the rim sign.