Orthotic CPM Exam - Oral Questions
and Answers Graded A+
Which muscle group is most likely affected if you observe a patient with a
shortened step on the sound side (assuming the patient is unilaterally involved)? -
Correct answer-plantarflexors
What type of AFO would you use for a patient with a tibial nerve lesion? - Correct
answer-Plantarflexion free, dorsiflexion stop
Evaluation of a patient with a gunshot wound to the hip reveals weak hip flexors.
What peripheral nerve is injured? - Correct answer-femoral nerve
A patient exhibits hallux rigidus, at which part of stance phase will the patient have
the most discomfort? - Correct answer-Late stance phase
What does the term foot progression angle refer to? - Correct answer-Relationship
between line of progression and long axis of foot
At which joint and in which plane does the motion of inversion and eversion
occur? - Correct answer-Subtalar (or talocalcaneonavicular) joint, coronal plane
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,What motion and at what phase of gait does a cushioned heel simulate? - Correct
answer-plantarflexion at heel strike, initial contact
Injury to which nerve presents as paralytic equinus during swing phase? - Correct
answer-common peroneal nerve
If the ankle is 90 degrees at initial contact, what type of moment do you have at the
knee? - Correct answer-Knee flexion moment
If the ankle is in 3 degrees of plantarflexion at midstance, what type of moment do
you have at the knee? - Correct answer-knee extension moment
During which phase of gait does the ankle achieve the greatest amount of
dorsiflexion in a healthy individual which normal ROM and muscle functionality?
- Correct answer-terminal stance
Which ligament maintains the medial arch? - Correct answer-spring ligament
(plantarcalcanealnavicular ligament)
What percentage of the gait cycle is spent in double limb support? - Correct
answer-20%
The dorsiflexion stop performs the function of which muscle? - Correct answer-
gastricnemius/soleus
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, The functions of the tibialis anterior muscles are? - Correct answer-dorsiflexion
and inversion
What moment at the knee is created in stance phase of gait in a solid thermoplastic
AFO set to neutral with a rigid full length footplate? Additionally, where in stance
would be this most noticed by the patient? - Correct answer-increase the knee
extension moment, terminal stance
Decrease the alignment at the ankle, knee and hips for crouch gait pattern? -
Correct answer-flexed hips, flexed knees, dorsiflexed ankles
A single gait cycle defined as? - Correct answer-Heel strike on one side to heel
strike on the ipsilateral side
For which diagnoses would you recommend a rocker bottom shoe? - Correct
answer-diabetes, arthritis, ankle fusion, etc. Whenever a patient requires a solid
AFO
How can you prevent a knee orthosis from migrating down? - Correct answer-
Supracondylar wedge, suprapatellar strap, attach a footplate, lightweight belt
What is the best position for a patient to be in when being fitted with a tibial
fracture orthosis? - Correct answer-sitting with legs dangling, knees at 90 degrees
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and Answers Graded A+
Which muscle group is most likely affected if you observe a patient with a
shortened step on the sound side (assuming the patient is unilaterally involved)? -
Correct answer-plantarflexors
What type of AFO would you use for a patient with a tibial nerve lesion? - Correct
answer-Plantarflexion free, dorsiflexion stop
Evaluation of a patient with a gunshot wound to the hip reveals weak hip flexors.
What peripheral nerve is injured? - Correct answer-femoral nerve
A patient exhibits hallux rigidus, at which part of stance phase will the patient have
the most discomfort? - Correct answer-Late stance phase
What does the term foot progression angle refer to? - Correct answer-Relationship
between line of progression and long axis of foot
At which joint and in which plane does the motion of inversion and eversion
occur? - Correct answer-Subtalar (or talocalcaneonavicular) joint, coronal plane
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,What motion and at what phase of gait does a cushioned heel simulate? - Correct
answer-plantarflexion at heel strike, initial contact
Injury to which nerve presents as paralytic equinus during swing phase? - Correct
answer-common peroneal nerve
If the ankle is 90 degrees at initial contact, what type of moment do you have at the
knee? - Correct answer-Knee flexion moment
If the ankle is in 3 degrees of plantarflexion at midstance, what type of moment do
you have at the knee? - Correct answer-knee extension moment
During which phase of gait does the ankle achieve the greatest amount of
dorsiflexion in a healthy individual which normal ROM and muscle functionality?
- Correct answer-terminal stance
Which ligament maintains the medial arch? - Correct answer-spring ligament
(plantarcalcanealnavicular ligament)
What percentage of the gait cycle is spent in double limb support? - Correct
answer-20%
The dorsiflexion stop performs the function of which muscle? - Correct answer-
gastricnemius/soleus
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
, The functions of the tibialis anterior muscles are? - Correct answer-dorsiflexion
and inversion
What moment at the knee is created in stance phase of gait in a solid thermoplastic
AFO set to neutral with a rigid full length footplate? Additionally, where in stance
would be this most noticed by the patient? - Correct answer-increase the knee
extension moment, terminal stance
Decrease the alignment at the ankle, knee and hips for crouch gait pattern? -
Correct answer-flexed hips, flexed knees, dorsiflexed ankles
A single gait cycle defined as? - Correct answer-Heel strike on one side to heel
strike on the ipsilateral side
For which diagnoses would you recommend a rocker bottom shoe? - Correct
answer-diabetes, arthritis, ankle fusion, etc. Whenever a patient requires a solid
AFO
How can you prevent a knee orthosis from migrating down? - Correct answer-
Supracondylar wedge, suprapatellar strap, attach a footplate, lightweight belt
What is the best position for a patient to be in when being fitted with a tibial
fracture orthosis? - Correct answer-sitting with legs dangling, knees at 90 degrees
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
