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Type :article
Subject :RD Surgery
Main Author :Rosdi Daud
Additional Authors :M. Daud
H. Mas Ayu
Arman Shah Abdullah
Title :Design & analysis of ankle foot orthosis for assisting car driver after ankle surgery
Place of Production :Tanjong Malim
Publisher :Fakulti Teknikal dan Vokasional
Year of Publication :2020
Corporate Name :Universiti Pendidikan Sultan Idris
PDF Full Text :Click to view PDF file

Abstract : Universiti Pendidikan Sultan Idris
Car accidents often occur and normally affected the car driver’s foot and ankle. If it is involved surgery for the ankle treatment, the recovery process normally takes a long time. As a normal practice, ankle foot orthosis (AFO ) will be worn by an ankle injury patient for shorten the recovery process and also to protect the foot from the pressure of the pedal car while driving especially during the event of such a sudden stop. However, the detail investigation of the suitability of AFO in absorbing or stand the pressure from pedal car during emergency stop is still lacking. Thus, the aim of this study is to investigate the suitability of the current AFO in absorbing or stand the pressure from pedal car during emergency stop and then propose the optimum one. The study was carried out by measuring the foot anthropometric of volunteer which it is to be used in designing the proposed AFO using SolidWorks software. There are three designs were constructed and analyzed to determine the optimum. Analytical process is done using ANSYS software and carbon fiber and polyprophelene (PP) were chosen for analyze the most suitability material for this special AFO (to use for protect immobilize foot during emergency braking). In respect to the material of AFO, results obtained can be concluded that PP is not suitable for this special AFO in absorbing impact during emergency brake. The FE results of the three designs were recorded and compared using the "screening" concept. Design with lowest stress factor is considered as the optimum design and suitable for drivers who have undergone ankle surgery. Based on the screening concept table, the second design is chosen as the optimum one. It gave the lowest maximum stress 4.5495 E + 08 and the safety factor was7.03. In respect of the geometry, based on FE simulation result and concept screening table, we can concluded that the design 2 was the optimum design. However, a better confidence of this optimum design to apply in AFO can be obtained by producing the real AFO model and then further testing needs to be conducted in order to evaluate whether or not, this device able to sustain the impact of emergency braking.

References

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[2] S. Mohamaddan, N.Z.Ishak, A.M. Aizuddin, S. Yamamoto, S.Z.M. Dawal, E.B. Safawi and H. Khamis, “Design and analysis of ankle foot orthosis for disabled children”. Journal of Advanced Manufacturing Technology Volume 12, Issue 1 Special Issue 2, pp. 247-258, 2018

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[8] Camilla Palmertz, Lotta Jakobsson, Ann-Sofi Karlsson, “Pedal use and foot positioning during emergency break”. IRCOBI Conference, 1998

[9] EL Sin Jian, Rosdi Daud, HM Ayu, MH bin Yusoff, J Jamiluddin, A Shah, “Application of a finite element method to predict fatigue life of the knee mobile bearing”. IOP Conference Series: Materials Science and Engineering, Vol. 469(1), 2019

[10] NMA Azam, Rosdi Daud, H Mas Ayu, J Ramli, MFB Hassan, A Shah, MAHM Adib, “The Effect of Knee Flexion Angle on Contact Stress of Total Knee Arthroplasty”. MATEC Web of Conferences, Vol. 225, 2018

[11] Rosdi Daud, Sulaiman Suaidah, H Mas-Ayu, Siti Haryani Tomadi, MS Salwani, Arman Shah, Mohammed Rafiq Abdul-Kadir, “Neural Network as an Assisting Tool in Designing Talus Implant”. Materials Science Forum, Vol. 916, pp.153-160, 2018

[12] FA Zakaria, R Daud, H Mas Ayu, SH Tomadi, MS Salwani, Mohammed Rafiq Abdul Kadir, “The Effect of Position and Different Size of Radial Hole on Performance of Cannulated Pedicle Screw”. Matec Web of Conferences, Vol. 108, 2017

[13] Li-Xin Guo, Jia-Yu Yin, “Finite element analysis and design of an interspinous device using topology optimization”. Medical & Biological Engineering & Computing, Vol.57(1), pp 89–98, 2019

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[15] M. A. Marques, E. Mendes, N. V. Ramos , V. C. Pinto and M. A. Vaz, “Finite-element analysis of ankle-foot orthosis to predic fracture conditions during gait”. Conference: I International Health Congress, 2010


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