Study of Contact Pressures in Total Hip Replacement

• Autorzy: Czerniec Myron , Zubrzycki Jarosław

Identyfikatory

DOI

10.12913/22998624/136178

• Języki publikacji: EN

Abstrakty

EN

Total hip arthroplasty is a complex procedure. The achievements of implantology enabled the development of a faithful representation of hip joint physiology as well as the production of materials that can successfully replace damaged natural tissues. The challenge is to correctly select the geometry of the endoprosthesis adequate to the load of the joint. Materials used for endoprosthesis are a metal head and a polymer cup (e.g. PE-UHMW). The main interactions in the endoprosthesis are friction and contact pressure, which must not exceed their limit. Exceeding them causes the destruction of the biomechanical system - plastic deformation of the polymer that is too large and the formation of unacceptable radial clearances. The paper presents the author's empirical method of determining the contact pressures in the tribological pair of the acetabulum - the head of the hip joint endoprosthesis. Based on the obtained research results, it was shown that the developed method gives correct solutions to the contact problem and gives reliable results. The assumption for the work was to prove that empirical methods give correct solutions to contact problems on a par with simulation methods such as FEM. The aim of the work was to demonstrate the correctness of the author's empirical method for determining the maximum contact pressures. Based on the author's developed calculation method of hip joint endoprosthesis contact parameters, the impact on maximum contact pressure and the angle of contact of the joint load was estimated depending on the diameter of the endoprosthesis and radial clearance. The correctness of changing the values of maximum contact pressure from the mentioned parameters was determined. Correspondingly: an increase in joint load causes a linear increase in the maximum contact pressure; increasing the diameter of the endoprosthesis head - their non-linear decrease, and increasing radial clearance - their increase.

Słowa kluczowe

EN

hip endoprosthesis; calculation method; contact mechanics; contact pressure; diameter of the endoprosthesis head; radial clearance

• Wydawca: Lublin University of Technology ; Polish Society of Ecological Engineering (PTIE), Branch of PTIE in Lublin
• Czasopismo: Advances in Science and Technology. Research Journal
• Rocznik: 2021
• Tom: Vol. 15, no 2
• Strony: 176--183
• Opis fizyczny: Bibliogr. 19 poz., fig., tab.

Twórcy

autor

Czerniec Myron

• Aerospace Faculty, National Aviation University, Liubomyra Huzara Ave. 1, Kyiv, Ukraine

• https://orcid.org/0000-0002-5603-9559

autor

Zubrzycki Jarosław

• Mechanical Engineering Faculty, Lublin University of Technology, ul. Nadbystrzycka 36. 20-618 Lublin, Poland

• https://orcid.org/0000-0002-7454-8090

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).