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A Sensor-Based Decision Support System for Transfemoral Socket Rectification.

Michalis Karamousadakis1, Antonis Porichis1, Suranjan Ottikkutti2

  • 1TWI-Hellas, 152 32 Halandri, Greece.

Sensors (Basel, Switzerland)
|June 2, 2021
PubMed
Summary
This summary is machine-generated.

A new decision support system (DSS) aids prosthetists in refining transfemoral prosthetic socket fit. It uses fuzzy logic and sensor data to suggest adjustments, balancing pressure for improved comfort and function.

Keywords:
FEAfuzzy-logic inference enginepressure sensorsprosthesissocket rectificationtransfemoral

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Area of Science:

  • Prosthetics and Orthotics
  • Biomedical Engineering
  • Rehabilitation Engineering

Background:

  • Transfemoral prosthetic socket design is crucial for patient comfort and mobility.
  • Current methods for socket fitting can be time-consuming and require iterative adjustments.
  • Optimizing socket fit reduces discomfort and improves prosthetic function.

Purpose of the Study:

  • To develop and validate a decision support system (DSS) for transfemoral prosthetic socket rectification.
  • To improve the accuracy and efficiency of prosthetic socket design.
  • To enhance the fit and comfort of prosthetic sockets through intelligent design adjustments.

Main Methods:

  • Development of a fuzzy-logic based decision support system (DSS).
  • Integration of socket pressure sensor data with a fuzzy logic inference engine.
  • Utilizing algorithms to modify 3D digital socket models (STL files) based on DSS recommendations.
  • Validation through Finite Element Analysis (FEA) simulations comparing socket fit and pressure distribution.

Main Results:

  • The DSS provides suggestions for socket rectification actions to prosthetists.
  • FEA simulations showed that volume reduction in sockets improves stump pressure distribution.
  • Increased rectification intensity led to improved pressure distribution but also introduced high-pressure areas, causing discomfort.
  • A necessary trade-off exists between the degree of rectification and pressure balance.

Conclusions:

  • The developed DSS offers a promising approach to optimize transfemoral prosthetic socket design.
  • Balancing pressure distribution is critical for prosthetic socket comfort and requires careful consideration of rectification intensity.
  • Further research may refine the DSS to achieve optimal pressure distribution and minimize discomfort.