Erhöhung des Range of Motion durch große Keramikköpfe und ein spezielles Design des Keramikinlays*

Oberbach, Thomas; Salomon, Dirk; Glien, Wilfried

doi:10.3139/120.100653

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2006

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“…This can lead to chipping off ceramic particles at the ceramic liner and damages on the surface of the ceramic head [1,2]. A method to avoid impingement is the increase of the Range of Motion (ROM) by using ceramic couplings with diameter 32mm and 36mm [3,4]. One aim of the investigations was the determination of the contact area and contact stresses for several coupling diameters.…”

Section: Introductionmentioning

confidence: 99%

Hip Simulator Study of Ceramic-Ceramic and Ceramic-PE-Couplings with Different Head Diameters

Oberbach

Begand

Glien

2006

KEM

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The contact conditions and the resulting contact stresses for ceramic on ceramic pairings with diameter 28, 32 and 36mm were determined. A hip simulator according ISO 14242 was used to measure the wear behaviour of these hard – hard couplings in comparison with the common hard – soft pairing ceramic on polyethylene. It was found that there isn’t a significant dependence of the wear behaviour from articulation diameter for ceramic on ceramic but a strong increase of polyethylene wear with larger hip joint heads.

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