OTC Orthopaedic Technologist Certified Upper Extremity Casting 4

Question 1

The proper wrist position for a cock-up (wrist extension) splint is approximately:

Accepted Answer

20–30 degrees of extension

Answer

A cock-up splint places the wrist at 20–30 degrees of extension to relieve carpal tunnel pressure and support the wrist functionally.

Question 2

When applying cast padding (Webril), each layer should overlap the previous layer by approximately what percentage?

Accepted Answer

50%

Answer

Cast padding is applied with approximately 50% overlap to ensure even, consistent padding thickness without gaps or bunching.

Question 3

A Muenster cast differs from a standard long arm cast primarily because it:

Accepted Answer

Locks the elbow at 90 degrees with full forearm rotation restriction

Answer

A Muenster cast extends above the elbow and contours tightly around the medial and lateral epicondyles, restricting forearm rotation while allowing limited elbow flexion.

Question 4

Which nerve is at greatest risk for compression in the region of the ulnar styloid when casting?

Accepted Answer

Ulnar nerve

Answer

The ulnar nerve passes near the ulnar styloid and pisiform and is vulnerable to direct pressure from inadequately padded cast edges.

Question 5

For a pediatric torus (buckle) fracture of the distal radius, the preferred immobilization is typically:

Accepted Answer

Short arm cast or removable splint for 3–4 weeks

Answer

Torus fractures are stable impaction injuries that heal well with short arm casting or a removable splint for 3–4 weeks.

Orthopaedic Technologist Certified Test Practice Test

Orthopaedic Technologist Certified Test Practice Test

OTC Orthopaedic Technologist Certified Upper Extremity Casting 4