The plantar pressure plate and the 3D plantar scanner, as two core tools for foot assessment, exhibit significant differences in detection dimensions, application scenarios, and data complementarity. The detailed comparative analysis is as follows:
1. Differences in Core Detection Dimensions
Plantar Pressure Plate
Focuses on dynamic mechanical analysis, capturing in real time the pressure distribution, peak values, and temporal sequence data of each region of the sole during standing/walking through a pressure-sensitive sensor array. It generates 2D pressure heatmaps and gait parameters (such as stride length and step frequency). Its advantage lies in revealing functional abnormalities of the foot, such as pressure overload in high-risk areas of diabetic feet or compensatory gait patterns.
3D Plantar Scanner
Uses optical projection technology to reconstruct a static 3D model of the foot, accurately measuring structural parameters such as foot length, foot width, and arch height. It is suitable for foot type classification, orthotic customization, and monitoring of children’s foot development but cannot reflect mechanical characteristics during movement.
2. Comparison of Clinical Application Scenarios
Pressure Plate Applicable Scenarios
- Gait disorder diagnosis (e.g., abnormal gait after stroke)
- Evaluation of rehabilitation training effects for sports injuries
- Verification of insole/orthotic function (judging effectiveness through improvement in pressure distribution)
3D Scanner Applicable Scenarios
- Personalized insole/shoe last design
- Screening of foot deformities (e.g., hallux valgus, flat feet)
- Long-term monitoring of foot morphology changes (e.g., during adolescent development)
3. Data Complementarity and Combined Application
Although the technical principles differ, the two are often used in combination in advanced foot assessment:
- 3D scanning provides structural baseline data, while the pressure plate verifies functional improvement (e.g., optimized arch pressure distribution after custom insole use)
- Finite element models combining data from both can simulate the impact of different insole parameters on plantar stress, providing a theoretical basis for rehabilitation plans
Key Conclusion: Device selection should clarify the need—pressure plates address “how force is applied,” while 3D scanners address “foot structural shape.” In clinical practice, combined use can achieve a more comprehensive assessment of foot health.
