The effect of acetabular cup position on wear of a large-diameter metal-on-metal prosthesis studied with a hip joint simulator

Vesa Saikko, Tiina Ahlroos, Hannu Revitzer, Oskari Ryti, Petri Kuosmanen

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)

Abstract

Clinically, malposition of the acetabular cup in large-diameter metal-on-metal prosthetic hip designs is associated with high wear, adverse reaction to metal debris and early failure. A steep angle of the cup (>60°) may lead to poor tribological performance. Large-diameter CoCr-on-CoCr prostheses were run in the HUT-4 hip joint simulator so that a steep angle was included. With a correct position, the tribological behaviour was excellent, the wear rate being 0.1 mm3/106 cycles. In the steepest position, lubrication failed and the wear rate was two orders of magnitude higher. This study stresses the importance of rigorous pre-clinical testing.
Original languageEnglish
Pages (from-to)70-76
JournalTribology International
Volume60
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

Fingerprint

simulators
Simulators
Metals
Wear of materials
Prosthetics
head up tilt
metals
lubrication
debris
Debris
Lubrication
cycles
Testing
Prostheses and Implants

Keywords

  • Metal-on-metal
  • acetabular cup position
  • abduction angle
  • edge loading

Cite this

Saikko, Vesa ; Ahlroos, Tiina ; Revitzer, Hannu ; Ryti, Oskari ; Kuosmanen, Petri. / The effect of acetabular cup position on wear of a large-diameter metal-on-metal prosthesis studied with a hip joint simulator. In: Tribology International. 2013 ; Vol. 60. pp. 70-76.
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abstract = "Clinically, malposition of the acetabular cup in large-diameter metal-on-metal prosthetic hip designs is associated with high wear, adverse reaction to metal debris and early failure. A steep angle of the cup (>60°) may lead to poor tribological performance. Large-diameter CoCr-on-CoCr prostheses were run in the HUT-4 hip joint simulator so that a steep angle was included. With a correct position, the tribological behaviour was excellent, the wear rate being 0.1 mm3/106 cycles. In the steepest position, lubrication failed and the wear rate was two orders of magnitude higher. This study stresses the importance of rigorous pre-clinical testing.",
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author = "Vesa Saikko and Tiina Ahlroos and Hannu Revitzer and Oskari Ryti and Petri Kuosmanen",
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The effect of acetabular cup position on wear of a large-diameter metal-on-metal prosthesis studied with a hip joint simulator. / Saikko, Vesa; Ahlroos, Tiina; Revitzer, Hannu; Ryti, Oskari; Kuosmanen, Petri.

In: Tribology International, Vol. 60, 2013, p. 70-76.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - The effect of acetabular cup position on wear of a large-diameter metal-on-metal prosthesis studied with a hip joint simulator

AU - Saikko, Vesa

AU - Ahlroos, Tiina

AU - Revitzer, Hannu

AU - Ryti, Oskari

AU - Kuosmanen, Petri

N1 - Project code: 34126

PY - 2013

Y1 - 2013

N2 - Clinically, malposition of the acetabular cup in large-diameter metal-on-metal prosthetic hip designs is associated with high wear, adverse reaction to metal debris and early failure. A steep angle of the cup (>60°) may lead to poor tribological performance. Large-diameter CoCr-on-CoCr prostheses were run in the HUT-4 hip joint simulator so that a steep angle was included. With a correct position, the tribological behaviour was excellent, the wear rate being 0.1 mm3/106 cycles. In the steepest position, lubrication failed and the wear rate was two orders of magnitude higher. This study stresses the importance of rigorous pre-clinical testing.

AB - Clinically, malposition of the acetabular cup in large-diameter metal-on-metal prosthetic hip designs is associated with high wear, adverse reaction to metal debris and early failure. A steep angle of the cup (>60°) may lead to poor tribological performance. Large-diameter CoCr-on-CoCr prostheses were run in the HUT-4 hip joint simulator so that a steep angle was included. With a correct position, the tribological behaviour was excellent, the wear rate being 0.1 mm3/106 cycles. In the steepest position, lubrication failed and the wear rate was two orders of magnitude higher. This study stresses the importance of rigorous pre-clinical testing.

KW - Metal-on-metal

KW - acetabular cup position

KW - abduction angle

KW - edge loading

U2 - 10.1016/j.triboint.2012.10.011

DO - 10.1016/j.triboint.2012.10.011

M3 - Article

VL - 60

SP - 70

EP - 76

JO - Tribology International

JF - Tribology International

SN - 0301-679X

ER -