OTC Orthopaedic Technologist Certified Orthopaedic Appliances and Bracing 3

Question 1

Which wrist-hand orthosis (WHO) position is recommended for immobilizing the wrist after a distal radius fracture to prevent redisplacement?

Accepted Answer

10-20° extension with slight ulnar deviation

Answer

A position of 10-20° wrist extension with slight ulnar deviation maintains fracture reduction while preventing the deforming forces that caused the original displacement.

Question 2

A patient recovering from an ACL reconstruction is prescribed a rehabilitative knee orthosis. At what flexion angle is the hinge typically locked in the early postoperative phase to protect the graft?

Accepted Answer

0° (full extension)

Answer

The knee is locked in full extension (0°) initially to protect the ACL graft and surgical repair from anterior tibial translation forces during early healing.

Question 3

Which of the following is a hallmark feature of a dynamic orthosis compared to a static orthosis?

Accepted Answer

It incorporates springs or elastic components to assist or resist motion

Answer

Dynamic orthoses incorporate elastic, spring, or mechanical components that provide a mobilizing force to assist weak muscles or correct soft tissue contractures.

Question 4

When measuring for a cervical collar, which dimension is most critical for determining proper collar height?

Accepted Answer

Tragus-to-chin distance

Answer

The tragus-to-chin distance corresponds to the vertical height of the neck and determines the appropriate collar height to maintain neutral cervical alignment.

Question 5

A Boston brace is distinguished from a Milwaukee brace primarily by the absence of which component?

Accepted Answer

Cervical superstructure

Answer

The Boston brace is a thoracolumbosacral orthosis with no cervical component, making it appropriate for curves with an apex at T8 or below.

Orthopaedic Technologist Certified Test Practice Test

Orthopaedic Technologist Certified Test Practice Test

OTC Orthopaedic Technologist Certified Orthopaedic Appliances and Bracing 3