Detail publikace

Running-in friction of hip joint replacements can be significantly reduced: The effect of surface-textured acetabular cup

NEČAS, D. USAMI, H. NIIMI, T. SAWAE, Y. KŘUPKA, I. HARTL, M.

Originální název

Running-in friction of hip joint replacements can be significantly reduced: The effect of surface-textured acetabular cup

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Hip joint replacements represent the most effective way of treatment for patients suffering from joint diseases. Despite the rapid improvement of implant materials over the last few decades, limited longevity associated with wear-related complications persists as the main drawback. Therefore, improved tribological performance is required in order to extend the service life of replacements. The effect of surface texturing of UHMWPE acetabular cup was investigated in the present study. Unique tilling method was utilized for manufacturing the dimples with controlled diameter and depths on the contact surface of the cup. The experiments with four commercial femoral components and two model lubricants were realized. The main attention was paid to a coefficient of friction considering the differences between the original and the dimpled cups. Results showed remarkable lowering of friction, in general. Focusing on the simulated human synovial fluid, friction was reduced by 40% (alumina ceramic), 38.8% (zirconia toughened ceramic), 25.5% (metal), and 9.9% (oxinium). In addition, the dimples helped to keep the friction stable without fluctuations. To conclude, the paper brings a new insight into frictional behaviour of the hip replacements during running-in phase which is essential for overall implant lifespan. It is believed that proper surface texturing may rapidly improve the life quality of millions of patients and may lead to considerable financial savings.

Klíčová slova

Hip joint replacement; friction; texturing; dimple; longevity

Autoři

NEČAS, D.; USAMI, H.; NIIMI, T.; SAWAE, Y.; KŘUPKA, I.; HARTL, M.

Vydáno

1. 12. 2020

Nakladatel

Springer

Místo

Švýcarsko

ISSN

2223-7690

Periodikum

Friction

Ročník

8

Číslo

6

Stát

Čínská lidová republika

Strany od

1137

Strany do

1152

Strany počet

16

URL

https://link.springer.com/article/10.1007/s40544-019-0351-x

Plný text v Digitální knihovně

http://hdl.handle.net/11012/194774

BibTex

@article{BUT162436,
  author="NEČAS, D. and USAMI, H. and NIIMI, T. and SAWAE, Y. and KŘUPKA, I. and HARTL, M.",
  title="Running-in friction of hip joint replacements can be significantly reduced: The effect of surface-textured acetabular cup",
  journal="Friction",
  year="2020",
  volume="8",
  number="6",
  pages="1137--1152",
  doi="10.1007/s40544-019-0351-x",
  issn="2223-7690",
  url="https://link.springer.com/article/10.1007/s40544-019-0351-x"
}