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<p>This study investigates the design of a 3D-printed long arm cast for fractures of the forearm, elbow, and upper arm, offering a more comfortable, customizable, and environmentally sustainable alternative to traditional plaster or fiberglass casts. Various materials, including Acrylonitrile Butadiene Styrene (ABS), Polylactic Acid (PLA), and Polyethylene Terephthalate Glycol (PETG), were evaluated, with PETG identified as the best option due to its high tensile strength, durability, and eco-friendliness. Tensile and flexural tests showed that increasing infill density (40%–60%) improved load-bearing capacity by 11% and flexural strength by 24%. A 3D scan-based digital arm model was used to design the cast in Computer-Aided Design (CAD) software, incorporating ventilation holes. Structural analysis revealed that hexagonal pore designs offered superior integrity and airflow. The cast was divided into four parts for easier printing and assembly, demonstrating the potential of 3D-printed casts to enhance patient comfort and contribute to more sustainable medical practices.</p>

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RETRACTED ARTICLE: Design and fabrication strategies for enhancing patient comfort and sustainability through PETG based 3D-printed orthoses

  • 期刊论文

  • 发表日期：

    2025年1月8日

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  • B. Sachin,
  • Charitha M. Rao,
  • N. Keerthi Kumar,
  • C. Durga Prasad,
  • Ashish Kumar,
  • Ravikiran,
  • H. N. Manjunath,
  • S. L. Aravind,
  • Saravana Bavan

摘要

This study investigates the design of a 3D-printed long arm cast for fractures of the forearm, elbow, and upper arm, offering a more comfortable, customizable, and environmentally sustainable alternative to traditional plaster or fiberglass casts. Various materials, including Acrylonitrile Butadiene Styrene (ABS), Polylactic Acid (PLA), and Polyethylene Terephthalate Glycol (PETG), were evaluated, with PETG identified as the best option due to its high tensile strength, durability, and eco-friendliness. Tensile and flexural tests showed that increasing infill density (40%–60%) improved load-bearing capacity by 11% and flexural strength by 24%. A 3D scan-based digital arm model was used to design the cast in Computer-Aided Design (CAD) software, incorporating ventilation holes. Structural analysis revealed that hexagonal pore designs offered superior integrity and airflow. The cast was divided into four parts for easier printing and assembly, demonstrating the potential of 3D-printed casts to enhance patient comfort and contribute to more sustainable medical practices.