ORTHOTIC ABC EXAM REAL QUESTIONS + DETAILED ANSWERS -
LATEST VERSION - TOP RATED 2026
What is the ideal distance between the eyebrows and ears for the HALO ring? -
ANSWER 1 cm
Do the headblocks on a HALO extend above or below the ring? ANSWER
ABOVE
How much torque should be applied to the pins of a pedatric HALO?
ANSWER : 1 inch/pound annually
How much torque should be applied to the pins of an adult HALO? ANSWER :
8 in*lbs, 6 for osteoporotic or elderly
How much torque should be applied to the superstructure of a HALO?
ANSWER : 30 pounds
The tibialis posterior muscle performs the following tasks: ANSWER Plantar
flexion and inversion
The ANSWER talus and fibula articulate with the distal aspect of the tibia.
Which column or columns are involved in an anterior compression fracture of
the spine? ANSWER Anterior Column
The adductor magnus inserts where? ANSWER tubercle adductor
Where is the body weight line in respect to the knee and ankle at first contact?
The ANSWER is behind the knee and behind the ankle.
ANSWER Hemivertebra is a congenital malformation of the spine when one
side of the vertebra is not fully formed.
On a hand orthosis, the C-Bar serves as a thumb adduction stop.
, For a patient with good (4/5) dorsiflexion strength and fair (2/5) plantar flexion
strength, which double adjustable arrangement is appropriate? - ANSWER
Posterior Springs and Anterior Pins
Which rocker in an AFO will be most affected by cutting the footplate closest to
the met heads? The third rocker's response
When treating moderate adolescent idiopathic scoliosis, the main objective of a
corrective scoliosis orthosis is to: ANSWER to stop the curve from
progressing.
Following hip replacement surgery, the patient is recurrently experiencing
positional posterior dislocation. What is the main objective of a hip abduction
orthosis? ANSWER : Flexion of the hips
The mechanical ankle joints should be positioned at the level of the medial
maleolus' distal edge when creating a thermoplastic articulated AFO.
For a single piece anterior opening custom LSO, the conventional lateral
inferior trimline is: ANSWER 2 cm or 3/4 inch superior to the greater
trochanter.
When installing a ground reaction AFO, you see that the patient's knee is well
controlled in the agitated position, but the patient complains that the orthosis is
making it hard for them to swing sideways. The following change might be the
most suitable: ANSWER Insert a 1/4-inch heel wedge beneath the AFO
A posterior off-set unlocked knee joint's primary functional objective is to:
response Increase stability during stance (this is a better response than
preventing buckling at initial contact).
You see that the right side of an ambulatory child with cerebral palsy does not
have dorsiflexion range of motion (-5 degrees) with the knee extended when the
child is being cast for custom bilateral solid ankle AFOs. The best course of
action is to: ANSWER Add an external heel wedge and cast in a -5 degree
dorsiflexion.
You observe redness at the right navicular during a follow-up appointment for a
patient who had bilateral solid ankle AFOs fitted. What changes ought to be
made to the AFO? ANSWER : Place cushioning and a ST pad directly above
the medial maleolus.
Two weeks ago, a patient had a pair of custom semi-rigid orthoses fitted. They
LATEST VERSION - TOP RATED 2026
What is the ideal distance between the eyebrows and ears for the HALO ring? -
ANSWER 1 cm
Do the headblocks on a HALO extend above or below the ring? ANSWER
ABOVE
How much torque should be applied to the pins of a pedatric HALO?
ANSWER : 1 inch/pound annually
How much torque should be applied to the pins of an adult HALO? ANSWER :
8 in*lbs, 6 for osteoporotic or elderly
How much torque should be applied to the superstructure of a HALO?
ANSWER : 30 pounds
The tibialis posterior muscle performs the following tasks: ANSWER Plantar
flexion and inversion
The ANSWER talus and fibula articulate with the distal aspect of the tibia.
Which column or columns are involved in an anterior compression fracture of
the spine? ANSWER Anterior Column
The adductor magnus inserts where? ANSWER tubercle adductor
Where is the body weight line in respect to the knee and ankle at first contact?
The ANSWER is behind the knee and behind the ankle.
ANSWER Hemivertebra is a congenital malformation of the spine when one
side of the vertebra is not fully formed.
On a hand orthosis, the C-Bar serves as a thumb adduction stop.
, For a patient with good (4/5) dorsiflexion strength and fair (2/5) plantar flexion
strength, which double adjustable arrangement is appropriate? - ANSWER
Posterior Springs and Anterior Pins
Which rocker in an AFO will be most affected by cutting the footplate closest to
the met heads? The third rocker's response
When treating moderate adolescent idiopathic scoliosis, the main objective of a
corrective scoliosis orthosis is to: ANSWER to stop the curve from
progressing.
Following hip replacement surgery, the patient is recurrently experiencing
positional posterior dislocation. What is the main objective of a hip abduction
orthosis? ANSWER : Flexion of the hips
The mechanical ankle joints should be positioned at the level of the medial
maleolus' distal edge when creating a thermoplastic articulated AFO.
For a single piece anterior opening custom LSO, the conventional lateral
inferior trimline is: ANSWER 2 cm or 3/4 inch superior to the greater
trochanter.
When installing a ground reaction AFO, you see that the patient's knee is well
controlled in the agitated position, but the patient complains that the orthosis is
making it hard for them to swing sideways. The following change might be the
most suitable: ANSWER Insert a 1/4-inch heel wedge beneath the AFO
A posterior off-set unlocked knee joint's primary functional objective is to:
response Increase stability during stance (this is a better response than
preventing buckling at initial contact).
You see that the right side of an ambulatory child with cerebral palsy does not
have dorsiflexion range of motion (-5 degrees) with the knee extended when the
child is being cast for custom bilateral solid ankle AFOs. The best course of
action is to: ANSWER Add an external heel wedge and cast in a -5 degree
dorsiflexion.
You observe redness at the right navicular during a follow-up appointment for a
patient who had bilateral solid ankle AFOs fitted. What changes ought to be
made to the AFO? ANSWER : Place cushioning and a ST pad directly above
the medial maleolus.
Two weeks ago, a patient had a pair of custom semi-rigid orthoses fitted. They
