OCC OCC Fracture Types & Casting Indications

Question 1

A Colles fracture is a distal radius fracture with which characteristic displacement?

Accepted Answer

Dorsal displacement and angulation of the distal fragment (dinner fork deformity)

Answer

The classic Colles fracture produces dorsal tilt of the distal fragment, creating the dinner fork silhouette on lateral X-ray.

Question 2

Which cast is the standard immobilization for an uncomplicated Colles fracture after reduction?

Accepted Answer

Short arm cast in slight flexion and ulnar deviation

Answer

A short arm cast with the wrist in slight flexion and ulnar deviation counteracts the deforming forces of a Colles fracture.

Question 3

A scaphoid fracture is typically immobilized in which cast?

Accepted Answer

Thumb spica cast

Answer

Thumb spica immobilization includes the thumb and wrist to protect the scaphoid's tenuous blood supply and prevent non-union.

Question 4

Which fracture pattern describes a bone that bends but does not completely break, seen primarily in children?

Accepted Answer

Greenstick fracture

Answer

Greenstick fractures occur in pediatric patients whose immature, flexible bone bends and fractures on one cortex while the other remains intact.

Question 5

A boxer's fracture involves which bone?

Accepted Answer

Neck of the fifth metacarpal

Answer

A boxer's fracture is a fracture of the neck of the fifth metacarpal, typically from striking with a closed fist.

(OCC) Orthopedic Casting Certification Practice Test