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Area of Science:

  • Biomedical Engineering
  • Rehabilitation Technology
  • Prosthetics and Orthotics

Background:

  • Limb loss at the hip or pelvis presents significant challenges for ambulation due to the need to replace multiple joints.
  • Existing prosthetic solutions require extensive customization and may not fully address the complex biomechanical needs of hip-level amputees.

Purpose of the Study:

  • To design and validate an adjustable prosthesis simulator for hip disarticulation/hemipelvectomy.
  • To create a tool for researchers and manufacturers to assess novel prosthetic hip joint components.
  • To assist rehabilitation practitioners in understanding the user experience of hip-level prostheses.

Main Methods:

  • Utilized SolidWorks computer-aided design (CAD) software to engineer an adapter connecting prosthetic components to a hip abduction orthosis.
  • Fabricated the adapter using 1020 stainless steel and Aluminium 6061-T3.
  • Conducted mechanical testing on an INSTRON machine, adhering to ISO 15032:2000 standards for external hip disarticulation prostheses.

Main Results:

  • The designed adapter demonstrated the capacity to mount prosthetic hip joints frontally, laterally, or distally.
  • Mechanical testing confirmed the adapter's structural integrity, withstanding forces and moments anticipated during ambulation.
  • The simulator is adjustable for user height and pelvic width, facilitating ease of use.

Conclusions:

  • The developed hip prosthesis simulator is a robust and adjustable tool for evaluating prosthetic components.
  • This simulator can enhance the design process for hip-level prosthetics and improve clinical understanding of user needs.
  • Future work will involve evaluating gait parameters of able-bodied individuals using the simulator with various hip joints.