ir. ts. DR. MUHAMMAD HANIF RAMLEE

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Abstract. Osteoporosis and osteoarthritis are common pathological problems of the human bone tissue. There are some cases of pilon fractures associated with these 2 pathological conditions. In terms of treatment, for a normal and
healthy bone with pilon fracture, the use of the Delta external fixator is a favorable option because it can allow early mobilization for patients and provide stability for the healing process. However, the stability of the external
fixator differs when there is low bone stiffness, which has not been previously investigated. Therefore, this study was conducted to determine the stability of the external fixator to treat pilon fracture associated with osteoporosis
and osteoarthritis, particularly to differentiate the stress distribution and micromovement of fracture fragment. Three-dimensional finite element models of the ankle and foot bones were reconstructed based on the computed tomography datasets. The bones consisted of 5 metatarsal, 3 cuneiform, and 1 each of cuboid, navicular, calcaneus, talus, fibula, and tibia bones. They were assigned with linear isotropic behavior. The ankle joint consisted of ligament and cartilage, and they were assigned with the use of linear links and the Mooney-Rivlin model, respectively. During simulation of the gait cycle, 70 N and 350 N were applied axially to the tibia bone to represent the swing and stance phases, respectively. The metatarsal and calcaneus bones were fixed to prevent anymovement of the rigid body. The study found that the greatest von Mises stress value was observed at the pin−bone interface for the osteoporosis (108 MPa) model, followed by the osteoarthritis (87 MPa) and normal (44 MPa) models, during the stance
phase. For micromovement, the osteoporosis model had the largest value at 0.26 mm, followed by the osteoarthritis (0.09mm) and normal (0.03 mm)models. In conclusion, the greatest magnitudes of stress and micromovement were observed for the osteoporosis bone and extra care should be taken to treat pilon fracture associated with this pathological
condition.

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الحمد لله على كل حال
Allahamdulillah Ala Kulli Haal

This is my publication in 2019. Eager to publish more.

1. Abdul Hadi Abdul Wahab, Amir Putra Md Saad, Mohd Noor Harun, Ardiyansyah Syahrom, Muhammad Hanif Ramlee, Mohammed Rafiq Abdul Kadir, “Developing functionally graded PVA hydrogel using simple freeze-thaw method for artificial glenoid labrum”, Journal of the Mechanical Behavior of Biomedical Materials, 91, 406-415, 2019 (Q1, IF=3.239)
2. Gan Hong Seng, KA Sayuti, Muhammad Hanif Ramlee, YS Lee, WMHW Mahmud, AHA Karim, “Unifying the seeds auto-generation (SAGE) with knee cartilage segmentation framework: data from the osteoarthritis initiative”, International Journal of Computer Assisted Radiology and Surgery, 14 (5), 755-762, 2019 (Q2, IF=1.961)
3. Gan Hong Seng, Bakhtiar Al-Jefri Adb Salam, Aida Syafiqah Ahmad Khaizi, Muhammad Hanif Ramlee, Wan Mahani Wan Mahmud, Yeng-Seng Lee, Khairil Amir Sayuti, Ahmad Tarmizi Musa “Local mean based adaptive thresholding to classify the cartilage and background superpixels”, Indonesian Journal of Electrical Engineering and Computer Science, 15 (1), 2019, (Scopus indexed)
4. Syakirah Mohamed Amin, Muhammad Hanif Ramlee, Hadafi Fitri Mohd Latip, Gan Hong Seng, Mohammed Rafiq Abdul Kadir, “Finite element analysis of needle insertion angle in insulin therapy”, International Journal of Automotive and Mechanical Engineering (IJAME), 16(4), 7512-7523, 2019, (Scopus indexed)
5. Nur Amalina Zainudin, Muhammad Hanif Ramlee, Hadafi Fitri Mohd Latip, Gan Hong Seng, Evelyn Garcia-Nieto, Mohammed Rafiq Abdul Kadir “Biomechanical evaluation of pin placement of external fixator in treating tranverse tibia fracture: Analysis on first and second cortex of cortical bone”, Malaysian Journal of Fundamental and Applied Sciences, 15 (1), 75-79, 2019, (WoS indexed).
6. Nur Afikah Zainal Abidin, Mohammed Rafiq Abdul Kadir, Muhammad Hanif Ramlee, “Three dimensional finite element modelling and analysis of human knee joint- model verification”, International Conference on Biomedical Engineering ICOBE 2019, IOP Journal of Physics: Conference Series (JPCS), (Accepted, Scopus indexed).
7. Aishah Umairah Abd Aziz, Gan Hong Seng, Ahmad Kafrawi Nasution, Mohammed Rafiq Abdul Kadir, Muhammad Hanif Ramlee, “Development and verification of three-dimensional model of femoral bone: finite element analysis”, International Conference on Biomedical Engineering ICOBE 2019, IOP Journal of Physics: Conference Series (JPCS), (Accepted, Scopus indexed).
8. Siti Adawiyah Zulkifli, Maryam Hanim Shaikhani, Ahmad Kafrawi Nasution, Asnida Abdul Wahab, Mohammed Rafiq Abdul Kadir, Muhammad Hanif Ramlee, “Fabrication and biomechanical evaluation of polyurethane material for synthetic bone application”, International Conference on Biomedical Engineering ICOBE 2019, IOP Journal of Physics: Conference Series (JPCS), (Accepted, Scopus indexed).
9. Herman Tuminoh, Mohd Hafiz Mohd Afandi, Gan Hong Seng, Mohammed Rafiq Abdul Kadir, Muhammad Hanif Ramlee, “Number of screws affecting the stability and stress distributions of conventional and locking compression plate: a finite element study”, International Conference on Biomedical Engineering ICOBE 2019, IOP Journal of Physics: Conference Series (JPCS), (Accepted, Scopus indexed).
10. Wan Muhammad Asyraf Wan Zaki, Muhammad Faiz Md Shakhir, Muhammad Hanif Ramlee, Asnida Abdul Wahab “Smart medical chatbot with integrated contactless vital sign monitor”, International Conference on Biomedical Engineering ICOBE 2019, IOP Journal of Physics: Conference Series (JPCS), (Accepted, Scopus indexed).
11. Nur Amalina Zainudin, Muhammad Hanif Ramlee, “In silico of the different pin size of unilateral tibia external fixator: a pilot study”, EC Orthopaedics (Accepted)