Training Exam 1 Questions & Answers
100% Correct
D: prosthetics - ANSWER-artificial limbs
D: orthotics - ANSWER-braces
Prosthetists Job Description - ANSWER-1. design and fit the prosthesis to the patient
2. selects the appropriate materials and components
3. makes all casts, measurements, and
modifications (alignment)
4. evaluates the fit & function of the
prosthesis on the patient
5. teaches patient how to care for the
prosthesis
Orthotists Job Description - ANSWER-1. design, fit, and fabricate the orthoses
2. selects the appropriate components and materials
3. align the orthoses
4. educates patient on the appropriate use and care.
How did the job of the orthotists/prosthetists come to be? - ANSWER-pirates....
or bc of WWI, WWII, and polio epidemic of 1950s
In medieval times, they were blacksmiths, armor makers or skilled artisans using metal,
wood, or leather.
Today's Educational Requirements for Orthotists/Prosthetists - ANSWER-Master's
degree - emphasis research
methodology, kinesiology, biomechanics, MSK/neuromuscular pathology,
communication & current health issues
Complete residency (1 year)
Take certification exam.
Who is the most important member of the team? - ANSWER-the patient
Job of Rehabilitation Teams/Facts - ANSWER-patient education is primary concern
,begin education before amputation and immediately after
unfortunately education only in 50% of cases
children need education just as much as adults
Commonly Used Materials - ANSWER-1. Leather
2. Metal
3. Wood
4. Thermoplastic & thermosetting materials
5. Foamed plastics
6. Viscoelastic polymers
5 Areas to consider when choosing the appropriate material? - ANSWER-1. strength
(max load it can support)
2. Stiffness (amt of bending during loading)
3. Durability (withstand repeated loading, hinges)
4. Density (weight per unit volume, energy cost during activity)
5. Corrosion Resistance (chemical degradation, withstand sweat/urine)
Advantages to Leather - ANSWER-1. Protects skin from irritation
2. Good strength and resiliency
3. Breathability - good for shoe modification & foot orthotics.
4. Very moldable.
4 Most common metals used? - ANSWER-1. Steel
2. Aluminum
3. Titanium
4. Magnesium alloys
Adv/Dis of Steel - ANSWER-Strong, rigid, durable
High density (weight)
Susceptibility to corrosion
High alloy steels difficult to fabricate
Adv/Dis of Aluminum - ANSWER-High strength to weight ratio
Resistant to corrosion
, Not as durable as steel
Adv/Dis of Titanium - ANSWER-As strong as steel w/ 40% less density
more resistant to corrosion than steel
difficult to fabricate
more expensive than steel
Adv/Dis of Magnesium Alloys - ANSWER-Lighter than aluminum
Corrosion resistant
Not widely used bc its difficult to make and expensive
Adv/Dis of Wood - ANSWER-Available
Strong
Light weight
Easily shaped
Adv/Dis of Plastics (Thermoplastics) - ANSWER-formable when heated, rigid when
cooled
can be reheated to be reshaped multiple times
Adv/Dis of Plastics (Thermosetting) - ANSWER-applied over model in liquid form;
chemically cured to solidify.
Cannot be reheated
Adv/Dis of Plastics (Foam) - ANSWER-used as protective interface over the skin
Adv/Dis of Plastics (Viscoelastic polymers) - ANSWER-materials possessing
characteristics of stress relaxation and creep
D: Stress Relaxation - ANSWER-occurs when a material that is subjected to constant
deformation requires decreasing load with time to maintain a stead state
ie. stretching a balloon