Effect of crack defects on stress intensity and longevity of hip prostheses: a finite element analysis

Benouis Ali , Zagane Mohammed El Sallah , Moulgada Abdelmadjid , Murat Yaylaci , Ait Kaci Djafar , Şevval Öztürk , Ecren Uzun Yaylaci , Yilmaz Güvercin , Mehmet Emin Özdemir

Abstract

This study aims to assess the impact of defects on the reliability and service life of hip prostheses. To understand crack behavior in hip prostheses, specifically in the acetabular part, the stress intensity factor (SIF) was evaluated, accounting for crack interactions within orthopedic cement and at the bone-cup interface. The analyses were carried out using programs based on the Finite Element Method (FEM). The study reveals that significant stress concentrations occur at the bone interface, particularly under different orientations of the femoral implant. In addition, the study analyzed the relationship between the physical changes in the crack on the prosthesis and the stress intensity factor across various modes. Results indicate that cracks initiated at the cement contour can propagate by opening and shearing the cracked lips.

Key Words

cement; crack; fracture; prosthesis; stress intensity factor (SIF)

Address

Benouis Ali — LISMH, Dr. Moulay Tahar, University of Saida, Bp 138 Saida, 20000, Algeria; LMPM, Djillali Liabes University of Sidi Bel-Abbes, Algeria
Zagane Mohammed El Sallah — LMPM, Djillali Liabes University of Sidi Bel-Abbes, Algeria; University of Ibn Khladoun, Tiaret, 14000, Algeria
Moulgada Abdelmadjid — LMPM, Djillali Liabes University of Sidi Bel-Abbes, Algeria; University of Ibn Khladoun, Tiaret, 14000, Algeria
Murat Yaylaci — Department of Civil Engineering, Recep Tayyip Erdogan University, 53100, Rize, Türkiye; Biomedical Engineering MSc Program, Recep Tayyip Erdogan University, 53100, Rize, Türkiye; Dijitalpark Teknokent, Murat Yaylaci-Luzeri R&D Engineering Company, 53100, Rize, Türkiye
Ait Kaci Djafar — LMPM, Djillali Liabes University of Sidi Bel-Abbes, Algeria
Şevval Öztürk — Department of Civil Engineering, Recep Tayyip Erdogan University, 53100, Rize, Türkiye
Ecren Uzun Yaylaci — Faculty of Fisheries, Recep Tayyip Erdogan University, 53100, Rize, Türkiye
Yilmaz Güvercin — Department of Orthopaedic and Traumatology, Trabzon University, 61030, Trabzon, Türkiye
Mehmet Emin Özdemir — Department of Civil Engineering, Cankiri Karatekin University, 18100, Çankiri, Türkiye

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