DESIGN AND FABRICATION OF LOW-COST PROSTHETIC LIMBS FOR UPPER LIMB AMPUTEES IN URBAN AREAS
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DESIGN AND FABRICATION OF LOW-COST PROSTHETIC LIMBS FOR UPPER LIMB AMPUTEES IN URBAN AREAS
Abstract
The increasing number of upper limb amputees in urban areas, particularly within low- and middle-income countries, underscores the urgent need for affordable, functional prosthetic solutions. This study focuses on the design and fabrication of low-cost prosthetic limbs tailored for upper limb amputees residing in urban settings. Leveraging locally available materials such as aluminum alloy, thermoplastics, and recycled components, the research aimed to develop prosthetics that are both economically accessible and ergonomically efficient. The design process integrated user-centered principles, considering anthropometric data, functionality, aesthetics, and ease of maintenance. The prosthetic prototype incorporates basic movement mechanisms allowing for essential activities such as grasping, lifting, and rotation, achieved through mechanical linkages and harness systems without the need for electronics. Field testing was conducted with selected amputees to assess comfort, durability, and user satisfaction. Results indicate that the fabricated limbs achieved a substantial balance between cost-effectiveness and functional adequacy, with positive user feedback regarding mobility and daily task execution. This innovation has the potential to bridge the accessibility gap in prosthetic care for urban amputees and serve as a scalable model for broader implementation in other resource-constrained urban environments.
CHAPTER ONE:
INTRODUCTION
1.1 Background of the Study
Amputation, particularly of the upper limbs, presents not only a medical but also a social and economic challenge for affected individuals. Prosthetic limbs offer the potential to restore some level of functionality and independence. However, the high cost of conventional prosthetics—especially those that integrate advanced technology—places them out of reach for many amputees in low- and middle-income urban settings (World Health Organization, 2017).
In many developing countries, including Nigeria, the cost of imported or high-end prosthetic limbs ranges from $5,000 to over $50,000, depending on complexity and functionality (Zuniga et al., 2015). This poses a significant barrier for the majority of amputees who live on less than $2 a day. Consequently, there is an urgent need for cost-effective, durable, and functional prosthetic solutions tailored to local conditions and economic realities.
Urban areas, while more resource-rich than rural zones, also experience high concentrations of traffic accidents and industrial injuries, contributing to increasing rates of upper limb amputations (Odetunde & Alabi, 2021). Despite being closer to health services, many urban amputees remain underserved due to socioeconomic disparities and limited access to affordable prosthetic technology. This highlights the need for innovative designs that leverage local materials and simplified fabrication techniques to reduce costs without compromising utility (Biddiss & Chau, 2007).
Recent developments in low-cost 3D printing, locally sourced polymers, and biomechanical joint simulation have made it feasible to create functional, affordable prosthetic limbs that meet basic needs such as grasping, lifting, and arm extension (Ten Kate, Smit & Breedveld, 2017). These solutions must consider the unique ergonomic and cultural needs of users in urban African contexts, where environmental factors, social stigma, and lifestyle variations influence acceptance and usage (Agboola et al., 2019).
1.2 Statement of the Problem
Despite the growing need for prosthetic limbs in urban settings, most upper limb amputees are unable to access them due to their prohibitive cost and limited local production capacity. Commercially available prostheses are often unaffordable, inaccessible, and technologically inappropriate for the urban poor in developing nations. This gap in healthcare innovation results in physical, psychological, and social disadvantages for amputees, leading to decreased quality of life and loss of economic productivity (Atkins et al., 1996).
1.3 Objectives of the Study
The main objective of this study is to design and fabricate a low-cost, functional prosthetic limb suitable for upper limb amputees in urban areas. Specifically, the study aims to:
Identify key functional requirements for upper limb prosthetics in low-income urban settings.
Select appropriate low-cost materials and components that meet ergonomic and mechanical needs.
Design a prosthetic prototype using accessible technology such as 3D printing or modular fabrication.
Evaluate the functionality, comfort, and user acceptability of the fabricated prosthesis.
Provide recommendations for local production and scalability in urban healthcare systems.
1.4 Research Questions
This study will address the following questions:
What are the functional priorities for upper limb prosthetics among urban amputees?
Which materials and fabrication methods are most cost-effective for producing prosthetic limbs locally?
How does the designed prosthetic perform in comparison with standard low-cost options?
What are the perceptions of users regarding comfort, usability, and appearance?
How feasible is local production and distribution of these prosthetic limbs?
1.5 Significance of the Study
This study is expected to contribute significantly to medical engineering, public health, and rehabilitation services in developing countries. By focusing on cost reduction and functionality, it offers a potential pathway for improving accessibility and quality of life for urban amputees. It will also provide a blueprint for scalable, community-level prosthetic development, encouraging local innovation and reducing dependency on foreign imports (Ebrahimzadeh & Hariri, 2014).
Furthermore, healthcare institutions, NGOs, and government agencies may use the outcomes to develop inclusive rehabilitation strategies that prioritize affordability and functionality.
1.6 Scope of the Study
The study is limited to the design, material selection, and fabrication of upper limb prosthetic prototypes for urban use. It will not cover lower limb prosthetics or advanced bionic arms. Testing will focus on basic mechanical functionality, fit, comfort, and user feedback within a selected urban population.
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