CPT Materials, Tools, & Safety in Prosthetics

Question 1

Which material is most commonly used for creating a rigid prosthetic socket?

Accepted Answer

Epoxy resin

Answer

Epoxy resin is commonly used for creating rigid prosthetic sockets due to its excellent strength-to-weight ratio, durability, and ability to be molded precisely. It provides the necessary structural integrity and stiffness to support the patient's limb and transfer forces effectively during ambulation.

Question 2

What is the purpose of using a cast saw in prosthetic fabrication?

Accepted Answer

To cut and trim cast materials

Answer

A cast saw is a specialized tool used in prosthetic fabrication to safely and precisely cut and trim plaster or fiberglass cast materials. This is crucial during the initial stages of creating a mold from the patient's residual limb, allowing for accurate shaping and removal of excess material.

Question 3

Which personal protective equipment (PPE) is most important when working with volatile adhesives?

Accepted Answer

Respirator mask

Answer

When working with volatile adhesives, which often release harmful fumes and organic vapors, a respirator mask is the most critical piece of PPE. It protects the technician's respiratory system from inhaling these toxic substances, preventing potential health issues like dizziness, nausea, or long-term respiratory damage.

Question 4

What tool is used to smooth edges and surfaces of plastic sockets?

Accepted Answer

Bench sander

Answer

A bench sander is a fundamental tool in prosthetic fabrication used to smooth and refine the edges and surfaces of plastic sockets and other components. It allows technicians to remove rough spots, achieve precise contours, and ensure a comfortable, irritation-free fit for the patient.

Question 5

Why is silicone frequently used in prosthetic liners?

Accepted Answer

It improves shock absorption and comfort

Answer

Silicone is frequently used in prosthetic liners because its viscoelastic properties allow it to effectively absorb shock and distribute pressure. This material conforms well to the residual limb, providing a soft, cushioning interface that significantly enhances comfort and reduces skin irritation for the user during daily activities.

(CPT) Certified Prosthetic Technician Practice Test

(CPT) Certified Prosthetic Technician Practice Test

CPT Materials, Tools, & Safety in Prosthetics