NPTE-PTA Equipment, Devices & Technologies 3

Question 1

An ankle-foot orthosis (AFO) that prevents plantarflexion while permitting dorsiflexion is MOST beneficial for a patient with:

Accepted Answer

Foot drop during the swing phase of gait

Answer

Plantar fasciitis

Answer

Achilles tendon rupture requiring immobilization

Answer

Chronic lateral ankle instability

Question 2

A patient with a transtibial (below-knee) amputation demonstrates lateral trunk lean toward the prosthetic side during stance. This is MOST likely caused by a prosthetic foot set in:

Accepted Answer

Excessive plantarflexion

Answer

Excessive dorsiflexion

Answer

Neutral alignment

Answer

Excessive inversion

Question 3

Transcutaneous electrical nerve stimulation (TENS) is MOST appropriate for which patient goal?

Accepted Answer

Reduction of chronic low back pain

Answer

Quadriceps strengthening after ACL reconstruction

Answer

Decreasing muscle spasticity in hemiplegia

Answer

Facilitating open wound healing

Question 4

Which TENS parameter setting is associated with the gate control theory of pain modulation?

Accepted Answer

High frequency (80-150 Hz) at low intensity producing paresthesia

Answer

Low frequency (2-4 Hz) at high intensity to elicit muscle twitch

Answer

Burst mode at high intensity for endorphin release

Answer

Continuous mode at medium intensity for muscle re-education

Question 5

When applying a hydrocollator (moist heat) pack, how many layers of dry toweling are recommended between the pack and the patient's skin?

Accepted Answer

6-8 layers

Answer

1-2 layers

Answer

3-4 layers

Answer

No toweling; direct contact is safe

Question 6

Ultrasound at 1 MHz frequency is used instead of 3 MHz when the treatment goal is to reach tissue at a depth of approximately:

Accepted Answer

3-5 cm

Answer

0.5-1 cm

Answer

1-2 cm

Answer

8-10 cm

Question 7

A knee-ankle-foot orthosis (KAFO) is MOST commonly indicated for patients with:

Accepted Answer

Quadriceps weakness insufficient for independent knee control during stance

Answer

Isolated ankle dorsiflexion weakness

Answer

Plantar fasciitis with secondary arch collapse

Answer

Mild hip abductor weakness causing Trendelenburg gait