Wear and friction of thin, large-diameter acetabular liners made from highly cross-linked, vitamin-E-stabilized UHMWPE against CoCr femoral heads

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Standard

Wear and friction of thin, large-diameter acetabular liners made from highly cross-linked, vitamin-E-stabilized UHMWPE against CoCr femoral heads. / Saikko, Vesa.

julkaisussa: Wear, Vuosikerta 432-433, 202948, 15.08.2019.

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Harvard

APA

Vancouver

Author

Bibtex - Lataa

@article{e68bb75cff8b4c25a3e0b056d7136c03,
title = "Wear and friction of thin, large-diameter acetabular liners made from highly cross-linked, vitamin-E-stabilized UHMWPE against CoCr femoral heads",
abstract = "The experience of hip resurfacing with an ultra-high molecular weight polyethylene (UHMWPE) acetabular cup in the 1970s and 1980s was disappointing, partly because of the inadequate material properties of UHMWPE at the time. The use of state-of-the-art, vitamin-E-stabilized, highly cross-linked polyethylene, VEXLPE, should improve implant survivorship due to its advanced wear and oxidation resistance. Experimental, metal-backed VEXLPE liners of 4.0 mm thickness were wear and friction tested against 54 mm diameter CoCr femoral heads. The tests were conducted in a multidirectional hip joint simulator with an optimal (45°) and a high (65°) abduction angle of the acetabular component. Calf serum was used as the lubricant. The VEXLPE liners showed reasonable wear and friction behavior. The wear was linear with wear rates of 8.5 ± 0.6 mg/106 cycles and 12.9 ± 0.3 mg/106 cycles at 45° and 65° abduction, respectively. Before the wear test, the frictional torque with both positions was 3.6 ± 0.3 Nm, and after the wear test, the frictional torques with 45° and 65° abduction were 2.6 ± 0.3 Nm and 2.4 ± 0.6 Nm, respectively. The mean wear rate was 1.9-fold lower than that of a conventional total hip prosthesis, whereas the mean frictional torque was 1.7-fold higher.",
keywords = "Cross-linked UHMWPE, Hip resurfacing, Hip simulator, Prosthetic design, Vitamin E stabilization",
author = "Vesa Saikko",
year = "2019",
month = "8",
day = "15",
doi = "10.1016/j.wear.2019.202948",
language = "English",
volume = "432-433",
journal = "Wear",
issn = "0043-1648",
publisher = "Elsevier BV",

}

RIS - Lataa

TY - JOUR

T1 - Wear and friction of thin, large-diameter acetabular liners made from highly cross-linked, vitamin-E-stabilized UHMWPE against CoCr femoral heads

AU - Saikko, Vesa

PY - 2019/8/15

Y1 - 2019/8/15

N2 - The experience of hip resurfacing with an ultra-high molecular weight polyethylene (UHMWPE) acetabular cup in the 1970s and 1980s was disappointing, partly because of the inadequate material properties of UHMWPE at the time. The use of state-of-the-art, vitamin-E-stabilized, highly cross-linked polyethylene, VEXLPE, should improve implant survivorship due to its advanced wear and oxidation resistance. Experimental, metal-backed VEXLPE liners of 4.0 mm thickness were wear and friction tested against 54 mm diameter CoCr femoral heads. The tests were conducted in a multidirectional hip joint simulator with an optimal (45°) and a high (65°) abduction angle of the acetabular component. Calf serum was used as the lubricant. The VEXLPE liners showed reasonable wear and friction behavior. The wear was linear with wear rates of 8.5 ± 0.6 mg/106 cycles and 12.9 ± 0.3 mg/106 cycles at 45° and 65° abduction, respectively. Before the wear test, the frictional torque with both positions was 3.6 ± 0.3 Nm, and after the wear test, the frictional torques with 45° and 65° abduction were 2.6 ± 0.3 Nm and 2.4 ± 0.6 Nm, respectively. The mean wear rate was 1.9-fold lower than that of a conventional total hip prosthesis, whereas the mean frictional torque was 1.7-fold higher.

AB - The experience of hip resurfacing with an ultra-high molecular weight polyethylene (UHMWPE) acetabular cup in the 1970s and 1980s was disappointing, partly because of the inadequate material properties of UHMWPE at the time. The use of state-of-the-art, vitamin-E-stabilized, highly cross-linked polyethylene, VEXLPE, should improve implant survivorship due to its advanced wear and oxidation resistance. Experimental, metal-backed VEXLPE liners of 4.0 mm thickness were wear and friction tested against 54 mm diameter CoCr femoral heads. The tests were conducted in a multidirectional hip joint simulator with an optimal (45°) and a high (65°) abduction angle of the acetabular component. Calf serum was used as the lubricant. The VEXLPE liners showed reasonable wear and friction behavior. The wear was linear with wear rates of 8.5 ± 0.6 mg/106 cycles and 12.9 ± 0.3 mg/106 cycles at 45° and 65° abduction, respectively. Before the wear test, the frictional torque with both positions was 3.6 ± 0.3 Nm, and after the wear test, the frictional torques with 45° and 65° abduction were 2.6 ± 0.3 Nm and 2.4 ± 0.6 Nm, respectively. The mean wear rate was 1.9-fold lower than that of a conventional total hip prosthesis, whereas the mean frictional torque was 1.7-fold higher.

KW - Cross-linked UHMWPE

KW - Hip resurfacing

KW - Hip simulator

KW - Prosthetic design

KW - Vitamin E stabilization

UR - http://www.scopus.com/inward/record.url?scp=85068232685&partnerID=8YFLogxK

U2 - 10.1016/j.wear.2019.202948

DO - 10.1016/j.wear.2019.202948

M3 - Article

VL - 432-433

JO - Wear

JF - Wear

SN - 0043-1648

M1 - 202948

ER -

ID: 35759551