Three-Dimensional Foot Scanner’s Detection Function for Flat Feet and Varus Feet and Detailed Explanation of Laser Principle
As a modern tool for foot health assessment, the three-dimensional foot scanner uses laser technology to accurately detect problems of flat feet and varus feet.
Flat feet are manifested as collapse of the foot arch, leading to weakened shock absorption function; varus feet (a common type of foot eversion) are manifested as outward tilt of the heel, causing abnormal gait and imbalance of joint pressure.
This technology can identify risks at an early stage, facilitating timely intervention (such as customized corrective insoles) and reducing the probability of complications.
Core Mechanism of Detection Function
Accurate Parameter Collection:
The scanner can obtain more than 60 three-dimensional data items such as foot length, foot width, and arch height within 10 seconds, with an error controlled within 0.5 mm. By comparing standard foot parameters, the system automatically identifies arch collapse (a sign of flat feet) and abnormal heel tilt angle (a sign of varus feet), generating a visualized report to assist diagnosis.
Risk Warning and Tracking:
Long-term storage of users’ foot data facilitates comparison of changes during re-examination. For example, continuous decrease in arch height may indicate worsening of flat feet, requiring strengthened rehabilitation measures.
Working Principle of Laser Technology
Its core technology is based on the laser triangulation method, which includes four steps:
- Laser Projection: Multiple groups of sensors project laser lines or dot matrices onto the foot surface, non-contact capturing of sole contour fluctuations.
- Image Acquisition: Optical sensors record laser deformation data within seconds, converting the foot into a high-density point cloud (tens of thousands of three-dimensional coordinate points), covering fine structures such as the foot arch curvature.
- Three-Dimensional Modeling: Algorithms automatically fit point cloud data, reconstructing a 1:1 foot model, supporting multi-angle viewing and outputting key parameters (such as arch height deviation).
- Application Output: The model can be directly used to assess foot abnormalities, for example, arch height <15 mm triggers flat feet warning, and heel tilt angle >4° marks varus feet risk.
Practical Application Value
- Early Intervention: After scanning and discovering arch collapse, customized supportive insoles can be produced with 3D printing, improving gait and alleviating back pain.
- Health Management: For sports enthusiasts or people who stand for long periods, regular scanning monitors foot changes and prevents complications such as plantar fasciitis.
