ORTHOTIC WRITTEN SIMULATION EXAM (REAL EXAM 2026/2027) | COMPLETE QUESTIONS AND CORRECT ANSWERS | BRAND NEW VERSION!!!

ORTHOTIC WRITTEN SIMULATION
EXAM (REAL EXAM 2026/2027) |
COMPLETE QUESTIONS AND CORRECT
ANSWERS | BRAND NEW VERSION!!!

ORTHOTIC WRITTEN SIMULATION EXAM (REAL EXAM 2026/2027)
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INSTRUCTIONS: This examination consists of 100 multiple- mn mn mn mn mn mn




choice questions. Select the single best answer for each question. Each question is designed
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to test clinical reasoning, material science, biomechanics, and patient management specific t
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o the field of Orthotics and Prosthetics.
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SECTION I: BIOMECHANICS & KINESIOLOGY mn mn mn mn




1. A patient presents with a C6 spinal cord injury. Which of the following describes th
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e primary biomechanical goal of a wrist-
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driven flexor hinge orthosis (WDFHO) for this patient?
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A) To provide wrist extension to tenodesis grasp.
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B) To provide wrist flexion to power a prehension pattern.
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C) To lock the wrist in neutral to allow for passive pinch.
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D) To substitute for the lack of intrinsic hand muscles.
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Correct Answer: B (The WDFHO uses active wrist extension to create a tenodesis grasp thro
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ugh passive flexion of the fingers. The primary driver is wrist flexion, which is powered by th
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e patient's remaining wrist extensors. The orthosis is designed to harness wrist flexion to gen
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erate pinch.) mn




2. During the stance phase of gait, the ankle-
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foot orthosis (AFO) functions to control tibial progression. At what point in the gait cy
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cle does the AFO provide the greatest resistance to plantarflexion?
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A) Initial Contact (Heel Strike)
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B) Loading Response
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C) Midstance
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D) Terminal Stance
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Correct Answer: B (During Loading Response, the foot is plantarflexing to achieve foot flat.
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An AFO with a plantarflexion stop resists this motion, preventing a drop-
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foot slap and controlling the rate of tibial advancement over the stationary foot.)
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,3. A polypropylene AFO with an anterior trim line is prescribed for a patient with foot
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drop. How does this design primarily facilitate swing phase clearance?
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A) By providing a rigid lever arm to push the ground.
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B) By using the material's elastic recoil to assist dorsiflexion.
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C) By creating a posterior ground reaction force to extend the knee.
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D) By locking the ankle in 5 degrees of dorsiflexion.
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Correct Answer: B (An anterior trim line allows the posterior aspect of the AFO to deform d
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uring stance as the tibia progresses forward. This stores energy, which is then released durin
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g pre-swing and swing phase to assist in dorsiflexion, aiding foot clearance.)
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4. A patient with a T4 paraplegia is being fitted with a KAFO. What is the primary bio
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mechanical reason for including a locked knee joint in this orthosis for community am
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bulation?
A) To allow for a swing-through gait pattern.
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B) To provide medial-lateral stability at the knee.
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C) To ensure knee stability during the stance phase.
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D) To reduce the energy cost of walking.
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Correct Answer: C (For a patient with no voluntary motor control below T4, knee instability
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is a primary concern. A locked knee joint provides the necessary mechanical stability to supp
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ort the patient's body weight during stance phase, preventing knee buckling.)
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5. The "Ground Reaction Force" (GRF) line in a patient with a drop foot and a solid A
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FO will typically fall:
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A) Anterior to the knee, causing a knee flexion moment.
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B) Posterior to the knee, causing a knee flexion moment.
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C) Anterior to the knee, causing a knee extension moment.
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D) Directly through the knee joint center, causing a neutral moment.
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Correct Answer: B (A solid AFO prevents forward tibial progression, shifting the GRF line po
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sterior to the knee joint. This creates a knee flexion moment, which the patient must actively
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counteract with their quadriceps.)
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SECTION II: MATERIALS & FABRICATION mn mn mn mn




6. Which of the following thermoplastics is known for having the highest impact resist
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ance and is commonly used for high-
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stress, dynamic orthoses like AFOs for active children?
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A) Polyethylene
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B) Polypropylene
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C) Copolyester (e.g., PETG)
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D) Acrylic
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,Correct Answer: A (High- mn mn mn




density polyethylene has excellent impact resistance and fatigue properties, making it suitabl
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e for active pediatric users who put high cyclic loads on their orthoses. While polypropylene
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is common, polyethylene is superior in impact resistance.)
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7. During the vacuum forming process of a polypropylene AFO, what is the primary p
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urpose of allowing the plastic to cool slowly while still on the positive model?
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A) To prevent shrinkage and warping.
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B) To increase the rigidity of the material.
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C) To allow for easy trimming of the edges.
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D) To create a smoother interior surface.
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Correct Answer: A (Allowing the thermoplastic to cool slowly and uniformly on the model e
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nsures that the material retains its shape as it transitions from a viscoelastic state back to a s
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olid. Quick cooling can cause internal stresses that lead to warping and shrinkage.)
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8. An orthosis is fabricated using carbon fiber layup in an epoxy resin matrix. The resu
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lting composite is incredibly stiff in the direction of the fibers. This is primarily due to
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:
A) The high tensile strength of the resin.
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B) The high compressive strength of the carbon fibers.
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C) The high modulus of elasticity of the carbon fibers.
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D) The adhesive properties of the epoxy matrix.
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Correct Answer: C (The modulus of elasticity dictates a material's stiffness. Carbon fiber has
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an exceptionally high modulus compared to polymers, meaning it resists deformation. The fi
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bers bear the load, and the epoxy matrix transfers the load to the fibers and protects them.)
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9. The main disadvantage of using stainless steel versus aluminum for orthotic joints is
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:
A) Aluminum is more corrosion-resistant.
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B) Aluminum is stronger and more durable.
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C) Stainless steel is significantly heavier for the same strength.
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D) Stainless steel is more difficult to weld.
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Correct Answer: C (Stainless steel has a higher density than aluminum. Therefore, for compo
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nents of similar size and strength, the stainless steel version will be noticeably heavier, increa
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sing the energy cost of ambulation for the patient.)
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10. The principal component in most rigid orthotic plastics that dictates the glass tran
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sition temperature (Tg) is the:
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A) Molecular weight of the polymer chain.
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B) Density of the polymer.
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, C) Degree of crystallinity.
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D) Strength of intermolecular secondary bonds (Van der Waals forces).
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Correct Answer: C (The glass transition temperature is the temperature at which an amorph
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ous polymer transitions from a hard, glassy state to a rubbery, pliable state. Crystallinity creat
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es physical crosslinks that restrict chain mobility, effectively increasing the temperature requir
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ed for this transition.)
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SECTION III: PATHOLOGIES & MANAGEMENT (CNS)
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11. A 58-year-mn mn




old male with a CVA (stroke) presents with a flaccid left foot drop and moderate genu
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recurvatum during stance. Which AFO design would be MOST appropriate to control
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both issues? mn




A) Solid AFO set in 5 degrees of dorsiflexion.
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B) Posterior leaf spring AFO (PLS).
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C) Articulated AFO with plantarflexion stop.
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D) Floor reaction AFO (FRAFO).
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Correct Answer: D (A Floor Reaction AFO, which often has a solid ankle and a rigid anterior
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shell, functions to dorsiflex the ankle and create a knee extension moment. This directly addr
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esses the foot drop and the knee hyperextension (genu recurvatum) by preventing excessive
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knee flexion and encouraging knee extension.)
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12. A patient with multiple sclerosis (MS) presents with fatigue and bilateral foot drop
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. The orthotist recommends a stance-
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control AFO with a dorsiflexion assist. The primary goal of the dorsiflexion assist is to:
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A) Provide support during stance for knee stability.
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B) Reduce the metabolic cost of gait during swing.
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C) Correct a varus deformity at the ankle.
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D) Control spasticity in the plantarflexors.
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Correct Answer: B (Foot drop causes the patient to use a hip-
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hiking or circumduction gait to clear the foot during swing, which is energy-
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intensive. A dorsiflexion assist (like a spring or elastic strap) helps passively lift the foot, redu
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cing the patient's effort and metabolic energy expenditure.)
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13. A patient with a T10 complete spinal cord injury is being evaluated for KAFOs. The
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orthotist recommends a stance-
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control knee joint (SCKJ) instead of a locked knee joint. What is the primary benefit o
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f this recommendation?
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A) It allows for a more normal, reciprocal gait pattern.
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B) It is more durable for long-term community use.
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