Studi Numerik Pemodelan Desain Lumbar Cage Implant dengan Struktur Cube Lattice with Side Diagonal Supports untuk Aplikasi Lumbar Interbody Fusion Surgery

Ramadhani, Andhika Prasetya (2024) Studi Numerik Pemodelan Desain Lumbar Cage Implant dengan Struktur Cube Lattice with Side Diagonal Supports untuk Aplikasi Lumbar Interbody Fusion Surgery. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Struktur sel periodik telah menarik perhatian besar karena bobotnya yang ringan dengan performa mekanik yang baik. Konsep ini dapat digunakan pada bidang otomotif, luar angkasa, bahkan medis. Berdasarkan artikel kesehatan yang diterbitkan Rumah Sakit dr. Radjiman Wedodiningrat Lawang (2023), diperkirakan 619 juta orang hidup dengan low back pain (LBP) dan merupakan penyebab utama kecacatan di seluruh dunia. Penanganan untuk kondisi nyeri LBP adalah prosedur bedah implantasi lumbar interbody fusion (LIF). Desain yang umum beredar saat ini masih berkonsep pejal. Dengan pesatnya additive manufacturing industri 4.0, riset desain berpori pada lumbar cage implant kini menjadi fokus untuk dikembangkan karena berpotensi mempercepat proses fusi ruas tulang belakang.
Penelitian ini bertujuan untuk menganalisis secara mekanik desain lumbar cage implant berkonsep struktur cube lattice with side diagonal supports yang dirancang dengan menyesuaikan geometri dan dimensi anatomi diskus lumbal populasi Indonesia. Dengan material resin PLA (polylactic acid). Penelitian ini dilakukan secara simulasi menggunakan ANSYS static structural. Diterapkan variasi diameter strut 0.25, 0.5, dan 0.75 mm dengan pembebanan sesuai ASTM F2077-14, 500 N. Dilakukan validasi model dengan membandingkan data hasil pengujian riil dengan simulasi. Pembuatan sampel dilakukan dengan teknik DLP 3D printing dan pengujian riil kompresi dilakukan dengan menggunakan Universal Testing Machine Hung Ta 2402.
Dari hasil penelitian ini, didapatkan bahwa merancang desain lumbar cage implant dengan konsep struktur lattice ternyata dapat diterapkan. Varian 0.25 mm menunjukkan nilai porositas tertinggi namun tidak aman. Varian 0.75 mm, berdasarkan kekuatan kompresi dan fatigue safety factor, menunjukkan varian ini aman dan berpotensi untuk dikembangkan lebih lanjut.

Periodic cell structures have attracted great attention due to their light weight with good mechanical performance. This concept can be used in automotive, aerospace, and even medical fields. Based on a health article published by dr. Radjiman Wedodiningrat Lawang Hospital (2023), an estimated 619 million people live with low back pain (LBP) and is the leading cause of disability worldwide. The treatment for LBP pain conditions is the surgical procedure of lumbar interbody fusion (LIF) implantation. The common designs in circulation today are still solid concepts. With the rapid additive manufacturing industry 4.0, porous design research on lumbar cage implants is now a focus to be developed because it has the potential to improve the fusion process that occurs between the two vertebrae.
This study aims to mechanically analyze the design of lumbar cage implant with the concept of cube lattice structure with side diagonal supports designed by adjusting the geometry and anatomical dimensions of the lumbar disc of the Indonesian population. With PLA (polylactic acid) resin material. This research was conducted by simulation / numerical study using ANSYS static structural. Variations of strut diameters of 0.25, 0.5, and 0.75 mm were applied with a loading based on ASTM F2077-14, 500 N. Model validation was carried out by comparing real test data with simulations. Samples were made using DLP 3D printing technique and real compression testing was conducted using Hung Ta 2402 Universal Testing Machine.
From the results of this study, it was found that designing a lumbar cage implant with a lattice structure concept was feasible. The 0.25 mm variant shows the highest porosity value but is not safe. The 0.75 mm variants, based on its compression strength and fatigue safety factor, show both are safe and have potential for further development.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	lumbar cage implant, lattice, porositas, kekuatan kompresi, fatigu lumbar cage implant, lattice, porosity, compression strength, fatigue
Subjects:	T Technology > T Technology (General) > T57.62 Simulation T Technology > TJ Mechanical engineering and machinery > TJ230 Machine design
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21101-(S2) Master Thesis
Depositing User:	Andhika Prasetya Ramadhani
Date Deposited:	09 Aug 2024 05:04
Last Modified:	09 Aug 2024 05:04
URI:	http://repository.its.ac.id/id/eprint/115258

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