other Orthopedic Surgery Orthopedic Surgery Original Research Original Research <span style="font-size:13pt"><span style="text-justify:kashida"><span style="text-kashida:0%"><span style="text-autospace:none"><span style="font-family:&quot;Times New Roman&quot;,serif"><span style="font-style:italic"><b><span style="font-size:9.0pt"><span style="font-style:normal">Background: </span></span></b><span style="font-size:9.0pt"><span style="font-style:normal">This article presents a mathematical justification for a new approach to arthroscopic stitching of the knee joint meniscus, based on a 3D computer model of the meniscus developed using the COMPASS-3D (APMFEM) program and AutodeskInventorPRO. The research with the patent RK No. 35413 dated 10.12.2021, titled &quot;Method of arthroscopic stitching of the meniscus of the knee joint&quot; builds upon the work of Yu.V. Labunsky.</span></span></span></span></span></span></span></span><br> <span style="font-size:13pt"><span style="text-justify:kashida"><span style="text-kashida:0%"><span style="text-autospace:none"><span style="font-family:&quot;Times New Roman&quot;,serif"><span style="font-style:italic"><b>&nbsp;&nbsp; </b><b><span style="font-size:9.0pt"><span style="font-style:normal">Methods:</span></span></b><span style="font-size:9.0pt"><span style="font-style:normal"> Mathematical analysis was performed to compare two methods of stitching the meniscus: the new oblique-vertical stitch and the classical vertical stitch. The contact area of the meniscus tissues in the area of the rupture was measured for both stitching methods.</span></span></span></span></span></span></span></span><br> <span style="font-size:13pt"><span style="text-justify:kashida"><span style="text-kashida:0%"><span style="text-autospace:none"><span style="font-family:&quot;Times New Roman&quot;,serif"><span style="font-style:italic">&nbsp;&nbsp; <b><span style="font-size:9.0pt"><span style="font-style:normal">Results: </span></span></b><span style="font-size:9.0pt"><span style="font-style:normal">The findings demonstrate that the new oblique-vertical stitch offers a 1.5 times larger contact area of the meniscus tissues in the area of the rupture, compared to the classical vertical stitch. Additionally, the new method provides a more significant grip on the radial and circular fibers of the meniscus, surpassing the capabilities of the classic seam.</span></span></span></span></span></span></span></span><br> <span style="font-size:13pt"><span style="text-justify:kashida"><span style="text-kashida:0%"><span style="text-autospace:none"><span style="font-family:&quot;Times New Roman&quot;,serif"><span style="font-style:italic">&nbsp;&nbsp; <b><span style="font-size:9.0pt"><span style="font-style:normal">Conclusion:</span></span></b><span style="font-size:9.0pt"><span style="font-style:normal"> The results of this study can be utilized to develop practical recommendations for traumatologists regarding arthroscopic stitching of the meniscus in the knee joint. The new approach, supported by mathematical analysis and a 3D computer model, offers improved outcomes in terms of contact area and grip on the meniscus fibers, potentially leading to enhanced surgical techniques and patient outcomes.</span></span></span></span></span></span></span></span><br> &nbsp; Biomechanics, Mathematical Justification, Finite Element Method, Knee Joint, Menisci, Meniscus Stitch 853 857 http://mjiri.iums.ac.ir/browse.php?a_code=A-10-8476-5&slc_lang=other&sid=1 Ergali Nabiyev 9193md@mail.ru 200319475328460079984 200319475328460079984 No KazNMU named S.D. Asfendiyarov Arnat Baizakov Arnat_bayzakov@mail.ru 200319475328460079985 200319475328460079985 No Kazakhstan’s medikal university “KSPH Khadisha Kashikova hadisha.kash@gmail.com 200319475328460079986 200319475328460079986 Yes Caspian University, International School of Medicine, Almaty, Kazakhstan Ramazan Askerov Askerov.ramazan@mail.ru 200319475328460079987 200319475328460079987 No Kazakhstan’s Medikal University “KSPH” Zhassulan Argynbayev Argynbayev.zhasulan@gmail.com 200319475328460079988 200319475328460079988 No Kazakhstan’s Medikal University “KSPH” Bauyrzhan Bissaliyev baurjandoctor@gmail.com 200319475328460079989 200319475328460079989 No West Kazakhstan Marat Ospanov Medical University