Simulation and performance evaluation of a new type of powered Dynamic Ankle Foot Orthosis

Patar, Mohd Nor Azmi Bin Ab; Mali, Mohamad; Ramli, Mohd Hanif Mohd; Makhtar, Ahmad Khushairy; Mahmud, Jamaluddin

doi:10.1109/chuser.2011.6163709

Cited by 6 publications

(3 citation statements)

References 3 publications

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“…The designers should prioritize factors such as material strength and SAFO thickness to ensure optimal safety margins, especially in patients’ conditions where forces may vary. The factor of safety for AFOs or other assistive devices is typically greater than or equal to 2 (Patar et al. , 2011; Rahman et al.…”

Section: Resultsmentioning

confidence: 99%

“…Figure 14 shows PLA-C SAFOs' factor of safety at 440 N, with 3, 4 and 5 mm thicknesses yielding factors of safety of 1.28, 2.15 and 2.84, respectively. Figure 15 factor of safety for AFOs or other assistive devices is typically greater than or equal to 2 (Patar et al, 2011;Rahman et al, 2023;Ramsey, 2011). Such a range provides a margin of safety to account for unexpected loads or variations in the patient's gait.…”

Section: Factors Of Safety In Solid Ankle Foot Orthosesmentioning

confidence: 99%

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Design and analysis of solid ankle foot orthosis by employing mechanical characterization and a low-cost scanning approach for additive manufacturing

Abas,

Habib,

Noor

2024

RPJ

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Purpose This study aims to investigate the fabrication of solid ankle foot orthoses (SAFOs) using fused deposition modeling (FDM) printing technology. It emphasizes cost-effective 3D scanning with the Kinect sensor and conducts a comparative analysis of SAFO durability with varying thicknesses and materials, including polylactic acid (PLA) and carbon fiber-reinforced (PLA-C), to address research gaps from prior studies. Design/methodology/approach In this study, the methodology comprises key components: data capture using a cost-effective Microsoft Kinect® Xbox 360 scanner to obtain precise leg dimensions for SAFOs. SAFOs are designed using CAD tools with varying thicknesses (3, 4, and 5 mm) while maintaining consistent geometry, allowing controlled thickness impact investigation. Fabrication uses PLA and PLA-C materials via FDM 3D printing, providing insights into material suitability. Mechanical analysis uses dual finite element analysis to assess force–displacement curves and fracture behavior, which were validated through experimental testing. Findings The results indicate that the precision of the scanned leg dimensions, compared to actual anthropometric data, exhibits a deviation of less than 5%, confirming the accuracy of the cost-effective scanning approach. Additionally, the research identifies optimal thicknesses for SAFOs, recommending a 4 and 5 mm thickness for PLA-C-based SAFOs and an only 5 mm thickness for PLA-based SAFOs. This optimization enhances the overall performance and effectiveness of these orthotic solutions. Originality/value This study’s innovation lies in its holistic approach, combining low-cost 3D scanning, 3D printing and computational simulations to optimize SAFO materials and thickness. These findings advance the creation of cost-effective and efficient orthotic solutions.

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Section: Resultsmentioning

confidence: 99%

Section: Factors Of Safety In Solid Ankle Foot Orthosesmentioning

confidence: 99%

Design and analysis of solid ankle foot orthosis by employing mechanical characterization and a low-cost scanning approach for additive manufacturing

Abas,

Habib,

Noor

2024

RPJ

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“…However, since the number of the physiotherapists is limited, it will not be easy for the patient to do the which needs to be supported by a physiotherapist all the time. Due to the limited numbers of physiotherapists [10], there are needs to develop a rehabilitation system where the patient can have their own rehabilitation exercises without aids from a therapist [11]. Furthermore, most of the literature reviews on hand rehabilitation robotic devices focus on the recovery of motor functions, specifically the extension and flexion movements of the hand.…”

Section: Introductionmentioning

confidence: 99%

Model-Based Systems Engineering of a Hand Rehabilitation Device

et al. 2015

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We have developed a robotic exoskeleton to restore and rehab hand and finger function. The robotic exoskeleton is a hybrid actuated mechanism rehabilitation system, in which each finger is attached to an instrumented lead screw mechanism allowing force and position control according to the normal human setting. The robotic device, whose implemented is based on biomechanics measurements, able to assist the subject in flexion and extension motion. It also compatible with various shapes and sizes of human‘s finger. Main features of the interface include an integration of DC servo motor and lead screw mechanism which allows independent motion of the five fingers with small actuators. The device is easily transportable, user safety precaution, and offer multiple mode of training potentials. This paper presents the measurements implemented in the system to determine the requirements for finger and hand rehabilitation device, the design and characteristic of the whole system.

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System Integration and Control of Finger Orthosis for Post Stroke Rehabilitation

Patar

Komeda

Low

et al. 2014

Procedia Technology

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Simulation and performance evaluation of a new type of powered Dynamic Ankle Foot Orthosis

Cited by 6 publications

References 3 publications

Design and analysis of solid ankle foot orthosis by employing mechanical characterization and a low-cost scanning approach for additive manufacturing

Design and analysis of solid ankle foot orthosis by employing mechanical characterization and a low-cost scanning approach for additive manufacturing

Model-Based Systems Engineering of a Hand Rehabilitation Device

System Integration and Control of Finger Orthosis for Post Stroke Rehabilitation

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