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Updated: Jul 26, 2026
09:31
Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty
Published on: February 27, 2018
12.2K
Quasi-static analysis of hip cement spacers
Abdelhafid Mallek1, Abdelkader Miloudi2, Mokhtar Khaldi3
1LMPM, Department of Mechanical Engineering, University of Sidi Bel Abbes, BP 89, Cité Ben M'hidi, Sidi Bel Abbes, 22000, Algeria.
Journal of the Mechanical Behavior of Biomedical Materials
|January 26, 2021
Summary
Reinforcing temporary hip spacers with materials like titanium, ceramic, and stainless steel can improve their durability. Finite Element Modeling (FEM) effectively predicts the mechanical behavior and fracture of these enhanced orthopedic cement (PMMA) spacers.
Area of Science:
- Biomaterials Science
- Mechanical Engineering
- Orthopedic Surgery
Background:
- Temporary hip spacers made of orthopedic cement (PMMA) are used for prosthetic infections but are prone to fracture.
- Reinforcement is essential to enhance the mechanical integrity of these bone cement spacers.
Purpose of the Study:
- To analyze the mechanical behavior and fracture of temporary hip prosthesis spacers.
- To investigate the efficacy of reinforcing PMMA spacers with titanium, ceramic, and stainless-steel stems.
- To validate the use of Finite Element Modeling (FEM) for predicting spacer performance.
Main Methods:
- Utilized a validated Finite Element Model (FEM) with non-linear dynamic explicit integration.
- Employed the Extended Finite Element Method (XFEM) to simulate crack initiation and propagation.
- Analyzed the influence of different reinforcement materials (titanium, ceramic, stainless steel) on spacer performance.
Main Results:
- FEM simulations accurately predicted the mechanical behavior of the spacers.
- Simulated crack initiation and propagation aligned well with experimental observations.
- The study demonstrated the effectiveness of FEM in evaluating reinforced spacer designs.
Conclusions:
- Numerical modeling using ABAQUS/Explicit is effective for predicting spacer mechanical behavior.
- Reinforced hip spacers show improved mechanical performance and fracture resistance.
- Developed FEM models can aid in designing more durable and higher-quality hip prostheses.
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