POAT311 UE Quiz

Which of the following is a distinguishing feature of a body-powered prosthesis?

• Controlled via EMG signals

• Operated through myoelectric sensors

• Utilizes scapular and shoulder movements

• Powered by servo motors

• Provides multiple grasp patterns

The primary purpose of a passive prosthesis is to:

• Enable fine motor dexterity

• Improve grip strength

• Enhance appearance and psychological acceptance

• Provide advanced sensory feedback

• Allow lifting of heavy objects

A 30-year-old construction worker with a transradial amputation requires a prosthesis with high durability and minimal maintenance. Which is most appropriate?

• Myoelectric hand

• Hybrid system

• Cosmetic prosthesis

• Body-powered prosthesis

• Activity-specific prosthesis

Which of the following factors most significantly differentiates a voluntary-opening hook from a voluntary-closing hook?

• Pinch strength and grip control

• Use of EMG signal for control

• Presence of a terminal socket

• Use in shoulder disarticulation

• Type of suspension system

Which patient would be the least ideal candidate for a myoelectric prosthesis?

• A 25-year-old with wrist flexor EMG signals

• A 60-year-old with cognitive impairment

• A 40-year-old with favorable residual limb length

• A 35-year-old seeking high cosmetic appearance

• A 50-year-old with unstable residual limb volume

You are designing a UE prosthesis for a patient who desires active elbow movement with minimal shoulder harness use. Which system is best?

• Passive prosthesis

• Myoelectric prosthesis

• Body-powered prosthesis

• Hybrid prosthesis

• Activity-specific prosthesis

During assessment for a body-powered transradial prosthesis, which physical requirement is most critical?

• Finger dexterity

• Skin pigmentation

• Scapular motion and shoulder strength

• EMG signal strength

• Passive ROM in the wrist

What is the biomechanical rationale behind using high trimlines in transhumeral sockets?

• To reduce the weight of the prosthesis

• To enclose the wrist and increase mobility

• To improve weight distribution over the shoulder

• To allow self-suspension in transradial users

• To facilitate easier donning

Which of the following patients would benefit most from an activity-specific prosthesis?

• A musician wanting to play piano again

• A person seeking cosmesis

• A sedentary office worker

• A patient with poor skin tolerance for sockets

• A child with poor cognitive capacity

Why are vacuum-assisted suspension systems beneficial in prosthetics?

• Reduce cost

• Improve proprioception and reduce pistoning

• Increase socket temperature

• Eliminate the need for maintenance

• Improve cosmetic appearance only