CFO Technology & Digital Tools 2 — Questions and Answers
Question 1: Which digital scanning method captures a 3D model of a patient's foot by projecting structured light patterns onto the surface?
- Ultrasound scanning
- Structured-light 3D scanning (Correct answer)
- Fluoroscopic imaging
- Magnetic resonance imaging
Correct answer: Structured-light 3D scanning
Structured-light 3D scanning projects patterned light and uses cameras to calculate surface geometry, producing accurate foot models for orthotic fabrication.
Question 2: In CAD/CAM orthotic fabrication, what does the 'CAM' component specifically refer to?
- Computer-aided measurement
- Computer-aided manufacturing (Correct answer)
- Computer-assisted modeling
- Computer-applied modification
Correct answer: Computer-aided manufacturing
CAM stands for computer-aided manufacturing, which translates the digital design into machine instructions that drive CNC milling equipment.
Question 3: A practitioner uses pressure mapping insoles during gait analysis. What does a high-pressure 'hot spot' under the first metatarsal head typically indicate?
- Supination during push-off
- Excessive forefoot pronation or hallux limitus (Correct answer)
- Heel strike abnormality
- Lateral column overload
Correct answer: Excessive forefoot pronation or hallux limitus
Elevated plantar pressure under the first metatarsal head often signals hallux limitus, forefoot pronation, or functional limb length discrepancy causing forefoot overload.
Question 4: When entering orthotic orders into an Electronic Health Record (EHR), which element is legally required to satisfy HIPAA documentation standards?
- Patient's insurance policy number in the chief complaint field
- Unique patient identifier linked to the clinical note (Correct answer)
- Practitioner's personal cell phone number
- Device retail price in the progress note
Correct answer: Unique patient identifier linked to the clinical note
HIPAA requires that protected health information be linked to a unique patient identifier within the medical record to ensure accurate tracking and privacy compliance.
Question 5: Which software feature in orthotic design programs allows the clinician to virtually add a metatarsal pad to a digital foot model before milling?
- Boolean subtraction
- Parametric modification (Correct answer)
- Raycasting
- Mesh triangulation
Correct answer: Parametric modification
Parametric modification tools let the clinician adjust specific design parameters — such as pad height, location, and taper — directly on the digital model.
Question 6: A CNC milling machine used in orthotic fabrication requires tool path programming. Which file format is most commonly used to transmit these instructions?
- STL
- G-code (Correct answer)
- DICOM
- HL7
Correct answer: G-code
G-code is the industry-standard language that specifies cutter positions, feed rates, and spindle speeds for CNC machines during orthotic blank milling.
Question 7: Telehealth follow-up for an orthotic patient is conducted via video call. Which clinical task CANNOT be adequately completed through telehealth alone?
- Reviewing the patient's gait video recorded at home
- Confirming fit by palpating pressure points on the device (Correct answer)
- Discussing activity modifications
- Answering questions about break-in schedule
Correct answer: Confirming fit by palpating pressure points on the device
Physical palpation to assess pressure distribution and device fit requires hands-on contact that cannot be replicated through a video-based telehealth visit.
CFO Technology & Digital Tools 2
Which digital scanning method captures a 3D model of a patient's foot by projecting structured light patterns onto the surface?