Evaluating Frictional Temperature Rise in Sliding Surface of Artificial Hip Joint Materials with Different Loading Conditions

• Authors: B. Sagbas , M. Durakbasa
• Languages of publication: EN

Abstracts

EN

Friction between articulating surfaces cause temperature rise in acetabular cup and femoral head. This heating may influence the rate of wear, fatigue, creep, oxidative degradation of bearing materials and may terminate surrounding tissue. The objective of this study is to determine temperature rise with different applied load for the articulating surfaces of conventional ultra high molecular weight polyethylene (UHMWPE) and vitamin E blended ultra high molecular weight polyethylene (VE-UHMWPE) acetabular components paired with a ceramic femoral component in bovine calf serum lubrication condition. Additionally frictional torque between the bearing surfaces was measured and friction coefficient was calculated. Frictional measurements of the joints were carried out on a custom made hip joint friction simulator. Various levels of static loads were applied on 28 mm diameter prostheses. In flexion-extension plane, a simple harmonic oscillatory motion between ± 24° was applied to the UHMWPE acetabular component. The period of motion was 1 Hz and the tests were run up to 12,000 cycles. Temperature rise in acetabular and femoral component was recorded with embedded thermocouples. The results were compared in terms of UHMWPE and vitamin E blended UHMWPE.

Keywords

EN

87.85.J-

Discipline

• 87.85.J-: Biomaterials

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 123
• Issue: 2
• Pages: 453-455

Dates

published

2013-02

Contributors

author

B. Sagbas

• Department of Mechanical Engineering, Yildiz Technical University, Istanbul, Turkey

author

M. Durakbasa

• Department of Interchangeable Manufacturing and Industrial Metrology, Vienna University of Technology, Karlsplatz 13/3113, A-1040 Wien, Austria

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Identifiers

DOI

10.12693/APhysPolA.123.453