The subchondral bone layer has an important role in supporting the articular cartilage under mechanical loads. Therefore, subchondral bone can affect cartilage damage, in this case osteoarthritis. Many studies have addressed osteoarthritis, but few studies have focused on the influence of subchondral bone morphology on the development of osteoarthritis. The purpose of this narrative review is to examine the relationship between subchondral bone morphology and the development of osteoarthritis by looking at the morphological differences between normal and osteoarthritis patients. The method used in the screening process for reputable journals, the author uses End-Note software. The keywords used are cartilage, osteoarthritis, subchondral bone, and morphology. Article search focused on pubmed database with several criteria. Then after getting the article, the data will be extracted into a table for further narrative review process. From the data obtained, it can be concluded that the morphological value in osteoarthritis patients is greater than normal patients, and patients suffering from osteoarthritis are infected more often in elderly patients. Other factors that can affect osteoarthritis are weight, height, and body mass index.
Teknologi 3D Printer DLP (Digital Light Process) adalah mesin pencetak 3 dimensi yang berbahan resin dengan system penyinaran menggunakan proyektor cahaya dengan proses pencetakan lapis demi lapis. Pada penelitian ini penulis akan membuat objek yaitu salah satu komponen permesinan yaitu casing gearbox. Dalam penelitian ini penulis akan menganalisa pengaruh parameter proses (exposre time, off time, dan interkasi keduanya) terhadap dimensi hasil cetak dan mendapatkan parameter paling optimal guna diaplikasikan ke komponen atau objek pencetakan. Dalam melakukan pengujian pengukuran dimensi penguji menggunakan alat ukur jangka sorong Krisbow KW06-422. Kemudian data hasil pengukuran diolah dengan metode Anova dengan bantuan software design expert version 10. Setelah dilakukan proses penelitian didapatkanlah hasil yaitu parameter yang paling berpengaruh adalah factor interaksi antara parameter exposure time dan parameter off time terhadap dimensi pada benda yang dicetak, dan kombinasi parameter yang paling optimal terdapat pada parameter exposure time 10 second dan off time 1 second dengan tingkat ketelitian sebesar 95%.
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