Orthotic ABC Exam Practice Questions
and Answers Graded A+ 2025
A boutonniere deformity consists of : - ANSWER-PIP flexion and DIP hyperextension
A burst fracture is the most unstable in what plane? - ANSWER-transverse
A custom AFO/KAFO must have one of what 5 requirements in addition to the non-
ambulatory requirements for medicare? - ANSWER-1. Could not be fit with pre-fab, 2.
Condition expected to be permanent or longstanding (more then 6 months), .3. Need for
control in more then one place 4. documented neurologic, circulatory, or orthopaedic
requires custom to prevent tissue injury. 5. Pt has healing fracture that lacks normal
anatomy or proportions.
A leg length discrepency over what length is enough to cause symptoms and require
correction? - ANSWER-2 cm
A lower motor neuron injury causes what type of paralysis? - ANSWER-Flaccid
A lower motor neuron neuron injury to C5 affects what muscles? - ANSWER-Deltoid
and biceps brachii
A lower motor neuron neuron injury to C6 affects what muscles? - ANSWER-Biceps and
radial extensor
A lower motor neuron neuron injury to C7 affects what muscles? - ANSWER-Triceps,
wrist flexors, and finger extensors
A lower motor neuron neuron injury to C8 affects what muscles? - ANSWER-Flexor
digitorum superficialis, flexor digitorum profundis, lumbrcles
A lower motor neuron neuron injury to T1 affects what muscles? - ANSWER-Palmar
interossei, dorsal interossei
A patient was fit with a pair of custom semi-rigid orthoses two weeks ago. They are now
complaining of discomfort on the plantar aspect of their feet, just proximal to the 1st met
heads. The MOST likely cause of this problem is what? - ANSWER-Lack of relief for the
flexor hallicus longus tendon.
A patient who has relocated to your area comes in with a device fabricated at another
orthotics and prosthetics facility. The patient is in our office because of discomfort and
dissatisfaction with the overall fit. Upon evaluation you notice some minor fitting
, problems but the main problem is that the assembly of the device is structurally
unsound. What should you do? - ANSWER-Offer to provide immediate structural repais
A patient with positional plagiocephaly has been wearing a custom cranial remolding
orthosis for the past 8 months. The patient is not 15 months old and has outgornw the
orthosis. The practitioner should expect the physician will: - ANSWER-Discontinue
orthotic treatment since the childs head growth has plateaued.
According to Medicare, diabetic shoes and inserts must be fit within how many months
of original visit? - ANSWER-6 months, eval and delivery must be in person
After providing a device to a Medicare beneficiary, the practitioner must provide any
adjustments or repairs without charge for how long? - ANSWER-90 Days
An orthosis for a burst fracture requires control in how many planes? - ANSWER-All 3,
burst fractures are the most unstable.
An upper motor neuron injury causes what type of paralysis? - ANSWER-Spastic
Anterior compression fracture of the spine involves which column(s) - ANSWER-
Anterior Column
Ape hand is another name for what presentation? - ANSWER-Hand of benediction
At a follow up visit for a patient who was fit with bilateral solid ankle AFOs, you note
redness at the navicular on the right side. What modifications should you make to the
AFO? - ANSWER-Add an ST pad and padding just superior to the medial maleolus
At initial contact the body weight line is where in relation to the knee and ankle? -
ANSWER-posterior to the ankle and posterior to the knee
Carpal Tunnel Syndrome results from the compression of what nerve? - ANSWER-
Median
Damage to what nerve causes scapular winging? - ANSWER-Long Thoracic nerve
Damage to which nerve causes Carpal Tunnel Syndrome? - ANSWER-the median
nerve
Describe a boutoniere deformity - ANSWER-PIP flexion, DIP hyperextension, inferior
sublaxation of lateral bands of extensor tendon
Describe a Dens 1 (anterior compression fracture) - ANSWER-Anterior column
damaged only, flexion plus complession, posterior ligaments damaged
and Answers Graded A+ 2025
A boutonniere deformity consists of : - ANSWER-PIP flexion and DIP hyperextension
A burst fracture is the most unstable in what plane? - ANSWER-transverse
A custom AFO/KAFO must have one of what 5 requirements in addition to the non-
ambulatory requirements for medicare? - ANSWER-1. Could not be fit with pre-fab, 2.
Condition expected to be permanent or longstanding (more then 6 months), .3. Need for
control in more then one place 4. documented neurologic, circulatory, or orthopaedic
requires custom to prevent tissue injury. 5. Pt has healing fracture that lacks normal
anatomy or proportions.
A leg length discrepency over what length is enough to cause symptoms and require
correction? - ANSWER-2 cm
A lower motor neuron injury causes what type of paralysis? - ANSWER-Flaccid
A lower motor neuron neuron injury to C5 affects what muscles? - ANSWER-Deltoid
and biceps brachii
A lower motor neuron neuron injury to C6 affects what muscles? - ANSWER-Biceps and
radial extensor
A lower motor neuron neuron injury to C7 affects what muscles? - ANSWER-Triceps,
wrist flexors, and finger extensors
A lower motor neuron neuron injury to C8 affects what muscles? - ANSWER-Flexor
digitorum superficialis, flexor digitorum profundis, lumbrcles
A lower motor neuron neuron injury to T1 affects what muscles? - ANSWER-Palmar
interossei, dorsal interossei
A patient was fit with a pair of custom semi-rigid orthoses two weeks ago. They are now
complaining of discomfort on the plantar aspect of their feet, just proximal to the 1st met
heads. The MOST likely cause of this problem is what? - ANSWER-Lack of relief for the
flexor hallicus longus tendon.
A patient who has relocated to your area comes in with a device fabricated at another
orthotics and prosthetics facility. The patient is in our office because of discomfort and
dissatisfaction with the overall fit. Upon evaluation you notice some minor fitting
, problems but the main problem is that the assembly of the device is structurally
unsound. What should you do? - ANSWER-Offer to provide immediate structural repais
A patient with positional plagiocephaly has been wearing a custom cranial remolding
orthosis for the past 8 months. The patient is not 15 months old and has outgornw the
orthosis. The practitioner should expect the physician will: - ANSWER-Discontinue
orthotic treatment since the childs head growth has plateaued.
According to Medicare, diabetic shoes and inserts must be fit within how many months
of original visit? - ANSWER-6 months, eval and delivery must be in person
After providing a device to a Medicare beneficiary, the practitioner must provide any
adjustments or repairs without charge for how long? - ANSWER-90 Days
An orthosis for a burst fracture requires control in how many planes? - ANSWER-All 3,
burst fractures are the most unstable.
An upper motor neuron injury causes what type of paralysis? - ANSWER-Spastic
Anterior compression fracture of the spine involves which column(s) - ANSWER-
Anterior Column
Ape hand is another name for what presentation? - ANSWER-Hand of benediction
At a follow up visit for a patient who was fit with bilateral solid ankle AFOs, you note
redness at the navicular on the right side. What modifications should you make to the
AFO? - ANSWER-Add an ST pad and padding just superior to the medial maleolus
At initial contact the body weight line is where in relation to the knee and ankle? -
ANSWER-posterior to the ankle and posterior to the knee
Carpal Tunnel Syndrome results from the compression of what nerve? - ANSWER-
Median
Damage to what nerve causes scapular winging? - ANSWER-Long Thoracic nerve
Damage to which nerve causes Carpal Tunnel Syndrome? - ANSWER-the median
nerve
Describe a boutoniere deformity - ANSWER-PIP flexion, DIP hyperextension, inferior
sublaxation of lateral bands of extensor tendon
Describe a Dens 1 (anterior compression fracture) - ANSWER-Anterior column
damaged only, flexion plus complession, posterior ligaments damaged
