CTO Patient Evaluation & Measurement 5

Question 1

When taking circumferential measurements of the lower extremity for a custom KAFO, at which anatomical reference point is the thigh measurement recorded as the 'maximum thigh circumference'?

Accepted Answer

At the widest girth of the thigh

Answer

Maximum thigh circumference is measured at the widest point of the thigh, which defines the upper boundary for the proximal thigh cuff of the KAFO.

Question 2

A technician observes that a patient's knee recurvatum reaches 15° during stance phase. Which orthotic intervention would directly address this finding?

Accepted Answer

Solid AFO set in 5° dorsiflexion

Answer

An AFO set in dorsiflexion creates an anterior tibial progression force that blocks knee hyperextension (recurvatum) during stance.

Question 3

During the initial evaluation for a scoliosis TLSO, the apical vertebra of the curve is at T9. The pad placement on the orthosis that directly addresses the primary curve correction should be located:

Accepted Answer

At the same level as the apical vertebra on the convex side

Answer

The lateral corrective pad is placed directly at the apex on the convex side of the curve to apply the primary three-point corrective force.

Question 4

A patient undergoing evaluation for an upper-extremity orthosis post-stroke exhibits wrist drop. Measurement of active wrist extension reveals 0° of motion. What is the priority measurement for fabricating a functional resting splint?

Accepted Answer

Passive range of motion of wrist extension

Answer

Passive wrist extension ROM determines the functional position achievable without overstretching structures, guiding the wrist angle set in the fabricated splint.

Question 5

A custom-molded shoe insert is being fabricated for a patient with a flexible flatfoot. Which measurement quantifies the talar head coverage that determines the medial arch support height?

Accepted Answer

Navicular drop test value

Answer

The navicular drop test measures how far the navicular falls from subtalar neutral to relaxed standing, quantifying medial arch collapse and guiding arch support height selection.

(CTO) Certified Orthotic Technician Practice Test

(CTO) Certified Orthotic Technician Practice Test

CTO Patient Evaluation & Measurement 5