FINITE-ELEMENT SIMULATION OF THE IN-SERVICE STRESS AND STRAIN FIELD OF HIP JOINT ELEMENTS BASED ON COMPUTER TOMOGRAPHY DATA

• Date: 2026
• Main Authors: HOROBETS, D. V., SOBOLEVSKA, M. B., LOSKUTOV, O. Ye.
• Format: Article
• Published: текст 3 2026
• Online Access: https://journal-itm.dp.ua/ojs/index.php/ITM_j1/article/view/174
• Journal Title: Technical Mechanics

The development of innovative human hip arthroplasty technologies and up-to-date designs of endoprostheses, in particular  acetabularcomponents, and the improvement of methods to fix them in the acetabular component – hipbone system and surgical techniques made it possible to make extremities fully operable, restore freedom of motion without any pain or discomfort, improve life quality, and readapt patients to work. The current trends in hip arthroplasty are the improvement of existing hip joint endoprosthesis designs and the development of new ones based on the results of biomechanical studies of acetabular component fixation stability and the development of technologies for designing an individual endoprosthesis by constructing virtual 3D hipbone models using computer tomography data with the aim to extend the endoprosthesis service life. Important problems in orthopedy- and traumatology-related biomechanics are the mathematical simulation and the analysis of the behavior of variously designed acetabular components of a hip joint endoprosthesis in conditions of traumatic defects of the acetabulum. The goal of the studies presented in this paper is to develop a finite-element model based on computer tomography data to study the stress and strain field of hip joint elements under service loads and thoroughly analyze the contact interaction of the femoral head with the acetabulum. The paper presents an algorithm for constructing a geometrical model based on computer tomography data to study the hip joint strength and a 3D geometrical model developed by that algorithm, which includes the sacrum, the ilium, the pubis, the acetabulum, and the femoral head. Based on that model, a finite-element model is developed to study the stress and strain field of hip joint elements under service loads and thoroughly analyze the contact interaction of the femoral head with the acetabulum. The proposed model may be used in the development of finite-element models to study the stress and strain field of the elements of a hip joint with a defective acetabulum and an endoprosthesis under service loads and make a comparative analysis of the operation of a hip joint and its endoprosthesis in biomechanical assessment of the fixation stability of variously designed acetabular components of a hip joint endoprosthesis. REFERENCES 1. Exploring recent trends and innovations in total hip arthroplasty. URL: https://orthospinenews.com/2025/06/23/exploring-recent-trends-and-innovations-in-total-hip-arthroplasty/ (Last accessed on July 24, 2025). 2. Hip arthroplasty (hip joint replacement). URL: https://medicalplaza.ua/uk/content/endoprotezirovanie-tazobedrennogo-sustava (Last accessed on July 24, 2025). (In Ukrainian). 3. Hip joint endoprosthesis: an individual model and material selection for a patient. URL: https://ortoped-klinik.com/orthopedic-services/osteoarthritis-of-the-hip/modeli-endoprotezov-tazobedrennogo-sustava.html (Last accessed on July 24, 2025). (In Russian). 4. 3D printing for orthopedic implant. URL: https://www.eplus3d.com/3d-printing-for-orthopedic-implant.html (Last accessed on July 24, 2025). 5. Hip joint endoprosthesis replacement. URL: https://kneeandpelvis.com/hip-arthroplasty/ (Last accessed on July 24, 2025). 6. Loskutov O. O. Differential Hip Arthroplasty in Displastic Coxarthrosis. D.M.Sci. Thesis. Approved on December 24, 2020. Kyiv, 2020. 387 pp. (In Ukrainian). 7. Current views on arthroplasty. URL: https://www.vz.kiev.ua/suchasni-poglyadi-na-endoprotezuvannya/ (Last accessed on July 24, 2025). (In Ukrainian). 8. Loskutov O. Ye., Oliinyk O. Ye., Loskutov O. O., Syniehubov D. A. Development of the national arthroplasty (the results of thirty-year studies).Transplantation and Artificial Organs. 2021. No. 2(03). Pp. 28 - 36. (In Ukrainian). 9. Population by bodymass index and sex. URL: https://ukrstat.gov.ua/gend_rivnist/metadata_gr/06/data/6.8.xls (Last accessed on July 24, 2025). (In Ukrainian). 10. Zienkiewicz O. The Finite Element Method in Engineering Science. Moscow: Mir, 1975. 541 pp. (In Russian). 11. Aleksandrov A. V., Potapov V. D. Fundamentals of the Elasticity and Plasticity Theory. Moscow: Vysshaya Shkola, 1990. 400 pp. (In Russian). 12. Kaplun A. B. Ansys in the Engineer's Hands: Manual. Moscow: Editorial URSS, 2003. 272 pp. (In Russian). 13. Image segmentation (3D Slicer's documentation). [URL: ohttps://slicer.readthedocs.io/en/latest/user_guide/image_segmenta tion.html (Last accessed on July 24, 2025). 14. MeshLab. References. URL: https://www.meshlab.net/#references (Last accessed on July 24, 2025). 15. Berezovsky V. A., Kolotilov N. N. Biophysical Characteristics of Human Tissues: Handbook. Kiev: Naukova Dumka, 1990. 224 pp. (In Russian). 16. Lazarev I. A., Kostiuk V. Yu., Diedkov A. G., Skiban M. V. Biomechanical computer modeling of "bone-fixator-endoprosthesis" system functioning after different types of interior hemipelvectomy. Trauma. 2018. V. 19. No. 6. Pp. 28-36. (In Ukrainian). 17. Tiazhelov A. A., Yaresko A. V., Karpinsky M. Yu., Fedulichev P. N., Goncharova L. D., Kuznetsov A. A. Analysis of the stress and strain field of the wing of ilium when using variously designed fixture units of a femur lengthening apparatus. Trauma. 2013. V. 14. No.1. (In Russian).https://doi.org/10.22141/1608-1706.1.14.2013.88858 18. Naumenko N. Ye., Loskutov O. A., Gorobets D. V., Sirota S. A., Khrushch I. K. Calculating models for evaluation of stressed-strained conditions of bone tissue under total hip replacement. Teh. Meh. 2014. No. 1. Pp. 67 - 72. (In Ukrainian). 19. Naumenko N. Ye., Gorobets D. V., Loskutov O. A., Sirota S. A. Numerical analysis of stresses of bone and implant system of hip joint acetabulum, Teh. Meh. 2015. No. 1. Pp. 110 - 115. (In Ukrainian). 20. Loskutov A. E., Krasovsky A. V., Oleinik A. Ye. et al. On a spongy bone tissue elastic modulus determination technique. Orthopaedics, Traumatology and Prosthetics. 2000. No. 3. Pp. 28 - 31. (In Russian). 21. Omelchenko T. M., Buryanov O. A., Lyabakh A. P., Mazevich V. B., Shidlovsky M. S., Musienko O. S. Correlation of elastic modulus and X-ray bone density in the area of the ankle joint. Orthopaedics, Traumatology and Prosthetics. 2018. No. 3. Pp. 80 - 84. (In Ukrainian).https://doi.org/10.15674/0030-59872018380-84 22. Popsuyshapka K. O., Kovernyk O. V., Pidgayska O. O., Karpinsky M. Yu. Study of the stress-strain state of the posterior lumbar fusion models in case of normal indicators of the sagittal balance of the spine and pelvis. Trauma. 2023. V. 24. No. 2 . Pp. 4-13. (In Ukrainian).https://doi.org/10.22141/1608-1706.2.24.2023.939 23. Herasymenko S. I., Populiakh M. V., Tiazhelov O. A., Yaresko O. V., Populiakh D. M. Substantiation of the acetabular component position in hip arthroplasty in patients with grave dysplasia. Herald of Orthopaedics, Traumatology and Prosthetics. 2016. No. 1. Pp. 10 - 15. (In Ukrainian). 24. Bondarenko S. Ye. Endoprothtetics in the Case of Consequences of Femoral Fossa and Proximal Femur Section Traumas. D.M.Sci. Thesis. Approved on October 1, 2018. Kharkiv, 2018. 382 pp. 12345678988. URL: https://sytenko.org.ua/wp-content/uploads/thesis/Bondarenko_SE_Thesis.pdf. (Lastaccessed on August 5, 2025). (In Ukrainian). 25. Björnsdóttir M. Influence of Muscle Forces on Stresses in the Human Femur. Stockholm, 2014. 45 pp. URL: https://www.diva-portal.org/smash/get/diva2:839895/FULLTEXT01.pdf (Last accessed on July 30, 2025) 26. Vidal-Lesso A., Ledesma-Orozco E. , Daza-Benitez L., Lesso-Arroyo R. .Mechanical characterization of femoral cartilage under unicompartimental osteoarthritis . Ingenieria Mecanica Tecnologia y Desarrollo. 2014. V. 4. No. 6. Pp. 239 - 246. 27. Ma C., Du T., Niu X., Fan Yu. Biomechanics and mechanobiology of the bone matrix. Bone Research. 2022. No. 10. 59 pp. https://doi.org/10.1038/s41413-022-00223-y 28. Plagenhoef S., Evans F. G., Abdelnour T. Anatomical data for analyzing human motion. Research Quarterly for Exercise and Sport. 1983. V .54. No. 2. Pp. 169 - 178.https://doi.org/10.1080/02701367.1983.10605290