CPT Materials, Tools, & Safety in Prosthetics 4

Question 1

A prosthetic technician develops a skin rash after repeated contact with uncured epoxy. What is the MOST appropriate corrective action?

Accepted Answer

Use nitrile gloves and barrier cream; consult occupational health

Answer

Epoxy sensitization requires eliminating skin contact through proper PPE; continued exposure worsens sensitization and occupational health evaluation is warranted.

Question 2

Which fastener type is preferred when attaching metal components to carbon fiber sockets to prevent galvanic corrosion?

Accepted Answer

Titanium or stainless steel fasteners with isolating washers

Answer

Titanium or stainless steel fasteners with isolating washers prevent galvanic corrosion at the dissimilar metal interface with carbon fiber.

Question 3

What is the primary purpose of applying a release agent to a positive mold before lamination?

Accepted Answer

To prevent the lamination from permanently bonding to the mold

Answer

Release agents create a barrier between the mold surface and the laminate, allowing clean separation after curing without damaging either.

Question 4

When using a heat gun to spot-modify a polypropylene socket, holding the gun too close primarily risks which outcome?

Accepted Answer

Scorching or burning the polymer

Answer

Excessive heat concentration from a heat gun held too close scorches and degrades polypropylene, weakening the structural integrity of the socket.

Question 5

Which standard does the FDA reference for testing the biocompatibility of materials used in direct skin contact prosthetic components?

Accepted Answer

ISO 10993

Answer

ISO 10993 provides a framework for evaluating the biological safety of medical device materials, including skin-contact prosthetic components.

(CPT) Certified Prosthetic Technician Practice Test

(CPT) Certified Prosthetic Technician Practice Test

CPT Materials, Tools, & Safety in Prosthetics 4