CTO Device Fitting & Adjustment 4

Question 1

A patient returns with a custom foot orthosis (CFO) complaining that it slides forward in the shoe. The MOST effective solution is:

Accepted Answer

Check shoe fit and recommend a shoe with a firm heel counter

Answer

A firm heel counter in the shoe holds the heel in place, preventing the orthosis and foot from sliding forward during gait.

Question 2

When adjusting plantarflexion resistance in a posterior leaf spring (PLS) AFO, trimming the lateral borders of the plastic will:

Accepted Answer

Decrease plantarflexion resistance (increase flexibility)

Answer

Trimming the lateral borders of a PLS AFO narrows the cross-section of plastic, reducing stiffness and decreasing plantarflexion resistance.

Question 3

Which measurement is essential before selecting an off-the-shelf lumbosacral orthosis (LSO) to ensure proper fit?

Accepted Answer

Waist circumference at the umbilicus

Answer

Waist circumference at the umbilicus is the primary sizing measurement for most off-the-shelf LSOs as it determines the panel and strap length needed.

Question 4

A patient with a tibial fracture brace (PTB orthosis) reports pain at the patellar tendon bar after one week of use. The technician should first:

Accepted Answer

Assess the bar position and lower it if it is too proximal

Answer

Pain at the patellar tendon bar often results from the bar being positioned too proximally, compressing the patella rather than the tendon; lowering it corrects this.

Question 5

For a diabetic patient requiring an AFO, which liner material provides the BEST combination of pressure relief and moisture management?

Accepted Answer

Plastazote (polyethylene foam)

Answer

Plastazote is heat-moldable, pressure-distributing, and lightweight, making it the preferred liner for insensate diabetic feet at risk for skin breakdown.

(CTO) Certified Orthotic Technician Practice Test

(CTO) Certified Orthotic Technician Practice Test

CTO Device Fitting & Adjustment 4