TY - JOUR AU - Nagy, Eszter Erika AU - Bor, Andrea AU - Sződy, Róbert AU - Gyimesi, Nóra TI - A periprotetikus infekciókontroll kihívásai - Prevenció és farmakoterápia JF - ACTA PHARMACEUTICA HUNGARICA J2 - ACTA PHARM HUNG VL - 93 PY - 2023 IS - Suppl. I. SP - S22 EP - S23 SN - 0001-6659 UR - https://m2.mtmt.hu/api/publication/34511798 ID - 34511798 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Faragó, Bence AU - Uzlov, Vlagyimir AU - Horváth, Bálint László AU - Sződy, Róbert AU - Fényes, László TI - Mozgó spacer alkalmazása distalis femur hiánnyal járó FRI és PJI esetekben JF - MAGYAR TRAUMATOLÓGIA ORTOPÉDIA KÉZSEBÉSZET PLASZTIKAI SEBÉSZET J2 - MAGYAR TRAUMATOLÓGIA ORTOPÉDIA KÉZSEBÉSZET PLASZTIKAI SEBÉSZET VL - 66 PY - 2023 IS - Suppl. II. SP - 42 EP - 42 PG - 1 SN - 1217-3231 UR - https://m2.mtmt.hu/api/publication/34501017 ID - 34501017 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Nikli, Balázs AU - Vámos, Gábor AU - Sződy, Róbert AU - Geosits, Péter TI - Implantátum törés utáni szárrevisio JF - MAGYAR TRAUMATOLÓGIA ORTOPÉDIA KÉZSEBÉSZET PLASZTIKAI SEBÉSZET J2 - MAGYAR TRAUMATOLÓGIA ORTOPÉDIA KÉZSEBÉSZET PLASZTIKAI SEBÉSZET VL - 66 PY - 2023 IS - Suppl. II. SP - 26 EP - 26 PG - 1 SN - 1217-3231 UR - https://m2.mtmt.hu/api/publication/34500028 ID - 34500028 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Szolnoki, Nikolett AU - Gasztonyi, Beáta AU - Paizs, Teréz AU - Földi, István AU - Németh, László AU - Sződy, Róbert TI - A túlnyomásos oxigénkezelés és helye az ambuláns ellátásban JF - ORVOSI HETILAP J2 - ORV HETIL VL - 164 PY - 2023 IS - 25 SP - 993 EP - 997 PG - 5 SN - 0030-6002 DO - 10.1556/650.2023.32802 UR - https://m2.mtmt.hu/api/publication/34144365 ID - 34144365 N1 - Export Date: 28 November 2023; CODEN: ORHEA AB - A túlnyomásos (hyperbaricus) oxigénkezelés az orvostudomány erősen specializált ága. Medicinális felhasználása és elterjedése a múlt század 60-as éveire tehető, azóta alkalmazott, kutatott, fejlesztett tudományág. A kezelés során a páciensek túlnyomásos keszonkamrában 100% oxigént lélegeznek. Klinikai felhasználás esetében a kezelési nyomás a tengerszint nyomásánál (1 abszolút atmoszféra) minimum 0,4 atmoszférával több, jellegzetesen 2,0–2,5 abszolút atmoszféra. A plazmában így oldott extra mennyiségű oxigén a keringéssel a szövetekbe jut, és hyperoxiát eredményez. A megnövekedett oxigénkínálat és a kúraszerűen alkalmazott kezelés kapcsán megjelenő intermittáló szöveti oxigénszint-változás által indukált sejtszintű regeneráció számos betegség gyógyításában, általában komplex kezelési terv részeként használható. További előnye, hogy noninvazív, fájdalommentes terápia. Felhasználási körét, működésének alapelveit a European Underwater and Baromedical Society szabályozza a European Committee of Hyperbaric Medicine összehívásával, a bizonyítékokon alapuló orvoslás elveinek betartásával. A szerzők közleményükben három olyan esetet ismertetnek, amelynél a túlnyomásos oxigénkezelés jelentősen hozzájárult a terápia sikeréhez. Orv Hetil. 2023; 164(25): 993–996. LA - Hungarian DB - MTMT ER - TY - JOUR AU - Dóczi, Martin AU - Sződy, Róbert AU - Zwierczyk, Péter TI - Extended mechanical loads for the analysis of acetabular cages JF - BIOMECHANICS AND MODELING IN MECHANOBIOLOGY J2 - BIOMECH MODEL MECHAN VL - 22 PY - 2023 SP - 1411 EP - 1423 PG - 13 SN - 1617-7959 DO - 10.1007/s10237-023-01728-z UR - https://m2.mtmt.hu/api/publication/33954066 ID - 33954066 N1 - Open access funding provided by Budapest University of Technology and Economics. Project no. TKP-9-8/PALY-2021 has been implemented with the support provided by the Ministry of Culture and Innovation of Hungary from the National Research, Development and Innovation Fund, financed under the TKP2021-EGA funding scheme. AB - To analyse the strength and mechanical behaviour of hip implants, it is essential to employ an appropriate loading model. Generating computational models supplemented with muscle forces is a complicated task, especially in the initial phase of implant development. This research aims to expand the possibilities of the simpler acetabular cage model based on joint loads without significantly increasing the demand for computing resources. A Python script covered and grouped the loads from daily activities. The ten calculated major loads were compared with the maximum of the walking and stair climbing loads through the finite element analyses of a custom-made acetabular cage. Sensitivity analyses were performed for the surrounding bones’ elastic modulus and the pelvis boundary conditions. The major loads can geometrically cover the entire load spectrum of daily activities. The effect of many high-magnitude force vectors is uncertain in the approach that uses the most common maximum loads. Using these resultant major loads, a new stress concentration area could be detected on the acetabular cage, besides the stress concentration areas induced by the loads reported in the literature. The qualitative correctness of the results is also supported by a control computed tomography scan: a fracture occurred in an extensive, high-stress zone. The results are not sensitive to changes in the elastic modulus of the surrounding bone and the boundary conditions of the model. The presented load vectors and the algorithm make more extensive static analyses possible with little computational overhead. The proposed method can be used for checking the static strength of similar implants. LA - English DB - MTMT ER - TY - JOUR AU - Dóczi, Martin AU - Sződy, Róbert AU - Zwierczyk, Péter TI - Equivalent loads from the life-cycle of acetabular cages in relation to bone-graft transformation JF - COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE J2 - COMPUT METH PROG BIO VL - 236 PY - 2023 PG - 10 SN - 0169-2607 DO - 10.1016/j.cmpb.2023.107564 UR - https://m2.mtmt.hu/api/publication/33785140 ID - 33785140 LA - English DB - MTMT ER - TY - JOUR AU - Dóczi, Martin AU - Sződy, Róbert AU - Zwierczyk, Péter TI - Effect of the Design Constraints and the Loading Model on the Geometry of Topology Optimized Acetabular Cages JF - PERIODICA POLYTECHNICA-MECHANICAL ENGINEERING J2 - PERIOD POLYTECH MECH ENG VL - 66 PY - 2022 IS - 3 SP - 253 EP - 259 PG - 7 SN - 0324-6051 DO - 10.3311/PPme.20238 UR - https://m2.mtmt.hu/api/publication/33056354 ID - 33056354 N1 - Correspondence Address: Dóczi, M.O.; Department of Machine and Product Design, 3 Műegyetem rkp., Hungary; email: doczi.martin@gt3.bme.hu AB - The treatment of large acetabular bone defects is a challenging task for the clinical experts. One of the most important part is the selection or the design the most appropriate implant. The aim of the study is to explore the potential of topology optimization for the treatment of extensive pelvic bone defects. Using a finite element method, the authors investigate different design spaces and load cases. Sensitivity tests for the material characteristic of the bone and the constraint of the applied volume-fraction were performed. The results are topology-optimized acetabular cage concepts with similar designs. The conceptual designs are not sensitive to the changing of the elastic modulus of the bone and the volume-fraction constraint. The reason for the similarity between the designs is the close connections, they have a special role in maximizing the stiffness. With the use of our design space, a lot of bone grafts can be put behind the cage and it can give an idea for sheet metal conceptual designs. Due to the close connections, similar conceptual variants are generated under normal walking load, which can be used for faster calculations in similar cases. LA - English DB - MTMT ER - TY - CHAP AU - Dóczi, Martin AU - Zwierczyk, Péter AU - Sződy, Róbert ED - Al-Begain, Khalid ED - Iacono, Mauro ED - Campanile, Lelio ED - Bargiela, Andrzej TI - Implementation of bone graft adaptation's FE model in hypermesh T2 - Proceedings of the 35th ECMS International Conference on Modelling and Simulation ECMS 2021 PB - European Council for Modelling and Simulation (ECMS) CY - Kingston Upon Thames CY - Dudweiler SN - 9783937436739 T3 - Communications of the ECMS, ISSN 2522-2414 ; 35 Issue 1. PY - 2021 SP - 152 EP - 156 PG - 5 DO - 10.7148/2021-0152 UR - https://m2.mtmt.hu/api/publication/32888990 ID - 32888990 N1 - Kuwait College of Science and Technology Department of Machine and Product Design, Budapest University of Technology and Economics, Műegyetem rkp. 3., Budapest, 1111, Hungary Péterfy Hospital, National Institute of Traumatology, Fiumei street 17., Budapest, 1081, Hungary Funding details: Nemzeti Kutatási, Fejlesztési és Innovaciós Alap, NKFIA Funding details: Innovációs és Technológiai Minisztérium Funding text 1: The research reported in this paper and carried out at BME has been supported by the NRDI Fund (TKP2020 NC, Grant No. BME-NCS) based on the charter of bolster issued by the NRDI Office under the auspices of the Ministry for Innovation and Technology. AB - Research significance: In the clinical practice, surgeons sometimes must deal with extended bone defects. Among others, bone grafts are used for filling the large absence. After implantation, the structure of the graft can change, and the graft's load-bearing effect can be significant. This leads to the idea, that during the design of an implant this effect should be taken into account in the finite element simulations. In this paper, the authors show the implementation of the bone graft adaptation. Methodology: This programming task was done by using Python, Tcl and the HyperMesh interface. The bone remodeling algorithm and the related parameters were from the literature research. The results are shown with a finite element model prepared for the Optistruct solver, where the geometry models were based on a patient's CT data. Results: Viewing the bone graft's elemental apparent density, the most loaded areas could be detected. Conclusion: The model can predict qualitatively the bone graft's change, which can provide additional information for the implant design. Further analyses are required to investigate the sensitivity of the results. © ECMS Khalid Al-Begain, Mauro Iacono, Lelio Campanile, Andrzej Bargiela (Editors) LA - English DB - MTMT ER - TY - JOUR AU - Dömötör, Hargita AU - Varga, Ádám L. AU - Sződy, Róbert AU - Tóth, Ferenc AU - Nardai, Gábor AU - Korovessis, Panagiotis TI - Institutionally Adopted Perioperative Blood Management Program Significantly Decreased the Transfusion Rate of Patients Having Primary Total Hip Replacement Surgery JF - ADVANCES IN ORTHOPEDICS J2 - ADV ORTHOP VL - 2021 PY - 2021 PG - 6 SN - 2090-3464 DO - 10.1155/2021/2235600 UR - https://m2.mtmt.hu/api/publication/32765030 ID - 32765030 LA - English DB - MTMT ER - TY - JOUR AU - Dóczi, Martin AU - Sződy, Róbert AU - Zwierczyk, Péter TI - Csontgraft változásának végeselemes modellezése HyperMesh-Calculix környezetben JF - GÉP J2 - GÉP VL - 71 PY - 2020 IS - 7-8 SP - 15 EP - 18 PG - 4 SN - 0016-8572 UR - https://m2.mtmt.hu/api/publication/31751045 ID - 31751045 LA - Hungarian DB - MTMT ER -