How to read foot scanner measurement data

The following is a professional guide to interpreting foot scanner measurement data, combining 3D modeling with clinical assessment criteria:

I. Key Points for Interpreting Core Data

Arch Morphology Analysis

Normal arch: Medial longitudinal arch angle 113°-130° (angle measured from the lowest point of the calcaneus, head of the talus, and first metatarsal bone).

Flat foot: Medial longitudinal arch angle > 130° and lateral longitudinal arch > 150° (measured in the weight-bearing position).

High-arch foot: Abnormally elevated arch with concentrated plantar pressure points (judgment requires reference to the 3D model color scale).

Foot Type Classification

Egyptian foot: Longest big toe, with linearly decreasing length. Shoes with oblique/square toes.

Greek foot: Second toe longer than big toe. Shoes with pointed toes.

Roman foot: First three toes of similar length. Round-toed shoes/wide-last shoes

Biomechanical abnormality indicators

Hallux valgus: Hallux valgus angle >15° (normal range 0°-10°)

Foot valgus: Abnormally increased calcaneal inclination angle (3D model shows arch collapse)

Example of 2D and 3D report analysis

▲ Typical Scan Report Diagram

Yellow dashed line: Arch height curve (collapse suggests flat feet)

Blue markers: Achilles tendon center and metatarsal key points (used for gait analysis)

III. Key Points for Clinical Diagnosis

Data Validation Standards

A rescan is required if the difference compared to the historical database is greater than 15%.

Measurements must be made in the weight-bearing position (sitting data are invalid).

Comprehensive Assessment Recommendations

For suspected flat feet, the talar-first metatarsal angle should be measured in conjunction with an X-ray.

Sports Injury Risk Prediction: A forefoot pressure ratio greater than 40% indicates a need for enhanced cushioning.

Customized insoles require arch width and first metatarsophalangeal joint height data.

Key Note: A single scan cannot directly diagnose foot problems. A comprehensive assessment by a rehabilitation physician, combined with gait analysis and imaging, is required. Before scanning, ensure the soles of the feet are clean and dry, and that weight is evenly distributed when standing.