Lower leg foot orthoses are orthotic gadgets that help the decrease leg joint and are suitable for a few pathologies, typically those that improve the foot drop circumstance, which is resulting from a lower leg joint insufficiency. In the existing paintings, a custom designed model of decrease leg foot orthosis applied as a part of the human frame has been created. Additive Manufacturing structures has been utilized to create the lower leg foot orthosis (Selective Laser Sintering Technology). Kinematic estimations had been received in a stride lab from foot drop sufferers, with and with out three-D plastic printed lower leg foot orthoses on unmarried toes. The consequences got proven that with the orthoses, the lower leg joint conduct is sort of a instantly torsional spring, with out a hysteresis. With an goal to check the sufficiency of the AFO, Clinical GAIT Analysis of Foot Drop Patients has been performed. Customized 3-d printed Ankle Foot orthosis has been established to present higher GAIT cycle execution. The consequences of this look at indicated that development of gait in foot drop sufferers with 3-d published ankle foot orthosis that's measured via Clinical Gait evaluation.
Table of Contents
1. Introduction
1.1 Anatomy
2. Literature Review
2.1 Ankle Foot Orthoses Design
2.2 Ankle Foot Orthoses Manufacturing Techniques
2.3 Clinical Trials of Ankle Foot Orthoses
3. Methodology
4. Results
5. Conclusion
Research Objectives and Themes
The primary objective of this research is to improve ankle joint stability in patients suffering from foot drop by developing a customized ankle-foot orthosis (AFO) utilizing 3D scanning and additive manufacturing (Selective Laser Sintering) technologies. The study seeks to address the limitations of conventional orthoses by creating a patient-specific, lightweight, and biomechanically effective device that improves gait cycle performance.
- Application of 3D scanning for patient-specific limb modeling.
- Utilization of Selective Laser Sintering (SLS) for manufacturing custom AFOs.
- Biomechanical evaluation of gait parameters using clinical gait analysis.
- Comparison of ankle torque, power, and forces between old and new 3D printed orthoses.
- Optimization of orthotic materials (e.g., Nylon-Poly Amide) for improved structural stiffness.
Excerpt from the Book
1. Introduction
Foot drop is a misleadingly legitimate name for a possibly complicated issue. It can be portrayed as a major deficiency of lower leg and toe dorsiflexion. The foot and reduction leg dorsiflexors include the tibialis most indispensable, the extensor hallucis longus (EHL), and the extensor digitorum longus (EDL) as appeared in Figure 1(Abboud, R. J 2002). These muscles enable the body to lift the foot in the midst of swing level and control plantarflexion of the foot on heel strike.
The exam is organized to develop new orthoses to help the as often as feasible watched stroll variations from the norm pertaining to the human decrease leg foot complex using CAD showing. PC showing is a viewpoint approach for perfect plan of prosthesis and orthoses. Utilizing CAD geometry numerous exams may be made without loosing of material and fundamental define factors can be changed (Slavyana Milusheva et al 2011).
Dynamic KAFOs are developed to control every stance and swing stages. But those currently available are inconvenient to use and feature complex manipulate systems. This research is directed at the usage of superelastic alloys to expand a biologically inspired dynamic knee actuator that may be hooked up on a traditional passive KAFO( S.M. Milusheva et al 2012).
Summary of Chapters
1. Introduction: This chapter defines the clinical condition of foot drop, details the relevant anatomy of the ankle nerve system, and outlines the research motivation for creating new orthoses using CAD technology.
2. Literature Review: This section assesses existing research on 3D scanning, additive manufacturing techniques for orthotics, and clinical trials concerning foot drop patient populations.
3. Methodology: This chapter describes the workflow of using 3D laser scanning to capture patient limb data and the subsequent CAD and 3D printing process used to fabricate the custom AFOs.
4. Results: This section presents findings on the effectiveness of the 3D-printed orthoses, specifically highlighting the benefits of SLS technology and the successful application of new materials like Nylon-Poly Amide.
5. Conclusion: This chapter summarizes the project's success and outlines future work, including the development of sensor-integrated AFOs and further optimization of the automated design process.
Keywords
Ankle foot orthosis, AFO, Gait analysis, Foot Drop, Human biomechanics, 3D Printing, Selective Laser Sintering, CAD, Additive manufacturing, Patient-specific design, Orthotic rehabilitation, Clinical gait, Ankle torque.
Frequently Asked Questions
What is the primary focus of this research?
The research focuses on improving ankle joint stability in patients suffering from foot drop through the design and production of customized, 3D-printed ankle-foot orthoses (AFOs).
What are the central thematic fields covered?
The study spans biomechanics, medical device engineering, computer-aided design (CAD), additive manufacturing, and clinical gait analysis.
What is the core research goal?
The goal is to demonstrate that 3D-printed, custom-fit orthoses offer superior gait cycle performance and patient comfort compared to conventional, pre-assembled orthotic devices.
Which scientific methodology is employed?
The methodology involves 3D laser scanning for data acquisition, CAD for geometry processing, and Selective Laser Sintering (SLS) for manufacturing, followed by clinical gait analysis to measure results.
What is discussed in the main body of the work?
The work details the anatomy related to foot drop, reviews existing manufacturing techniques, explains the 3D scanning and printing workflow, and compares performance metrics like ankle torque and power.
Which keywords characterize this paper?
Key terms include Ankle foot orthosis (AFO), Gait analysis, Foot Drop, Human biomechanics, and 3D Printing.
How does 3D printing benefit the fabrication of these orthoses?
3D printing allows for rapid, customized, and lightweight designs that are more comfortable for the patient and can be specifically tailored to the unique anatomy of the user.
What material was specifically highlighted for the new AFO design?
The research highlights the use of Nylon-Poly Amide, which demonstrated structural properties and deformation characteristics closely aligned with carbon fiber.
What role does clinical gait analysis play in the study?
Gait analysis is used to empirically validate the sufficiency of the AFO by comparing kinematic data of patients walking with and without the orthosis.
What future developments are proposed by the authors?
The authors suggest future research into embedding sensors within the orthosis to monitor usage and automate the design process for optimized performance and comfort.
- Quote paper
- Dr. Harish Banga (Author), Parveen Kalra (Author), Rajesh Kumar (Author), 2018, Improvement of Ankle Joint Stability in Foot Drop Patients During Walking by 3D Printed Ankle Foot Orthoses, Munich, GRIN Verlag, https://www.grin.com/document/442423
