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Changes in the Appendicular Skeleton with Age01:09

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The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...

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Development and Production of a Children's Upper-Limb Cycling Adapter Using 3D Printing.

Barbora Kopová1, Martin Bakeš1, Martin Čížek2

  • 1Department of Industrial Engineering and Management, Faculty of Mechanical Engineering, University of West Bohemia, Univerzitní 2762/22, 301 00 Pilsen, Czech Republic.

Materials (Basel, Switzerland)
|October 16, 2024
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Summary

This study developed an innovative upper-limb adapter for children aged 1-3 with congenital upper-limb defects, enabling safer cycling and physical activity. The functional, affordable device enhances mobility and confidence for children with disabilities.

Keywords:
3D printedbicycle adapterchildren adapterprototyping product designupper-limb adapterupper-limb prosthesis

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Area of Science:

  • Biomedical Engineering
  • Pediatric Rehabilitation
  • Assistive Technology

Background:

  • Congenital upper-limb defects impact children's physical activity and quality of life.
  • Existing solutions may be costly or lack functionality for young children.
  • The DESIGN+ project aimed to address these limitations through innovative design.

Purpose of the Study:

  • To develop a functional and affordable upper-limb adapter for children aged 1-3 with congenital upper-limb defects.
  • To enhance safe participation in physical activities, specifically cycling.
  • To improve the overall quality of life for affected children.

Main Methods:

  • Analysis of hand movements during cycling.
  • Computer-Aided Design (CAD) modeling using NX 1888 software.
  • Prototype development via 3D printing and subsequent rigorous testing.

Main Results:

  • A novel upper-limb adapter allowing 360° rotation and natural hand movement.
  • The adapter is constructed from soft, safety-enhancing materials.
  • A functional and reliable design was achieved after prototype adjustments.

Conclusions:

  • The developed adapter offers a significant improvement for children with upper-limb disabilities.
  • It promotes enhanced coordination, strength, and confidence in daily activities.
  • This innovation contributes to greater independence and participation in physical activities for young children.