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Erschienen in: International Orthopaedics 5/2006

01.10.2006 | Original Paper

The relationship between stem subsidence and improvement in the radiolucency in polished tapered stems

verfasst von: Ayumi Kaneuji, Tanzo Sugimori, Toru Ichiseki, Kiyokazu Fukui, Kengo Yamada, Tadami Matsumoto

Erschienen in: International Orthopaedics | Ausgabe 5/2006

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Abstract

We studied the relationship between stem subsidence and improvement in the initial radiolucency at the bone–cement interface in polished- and rough-surface stems. Stem subsidence was seen in 34 of 42 hips (81.0%), and improvement in the initial radiolucency was seen in 15 hips (35.7%) in collarless polished tapered stems at 1 year after operation. In polished stems, stem subsidence in cases with improvement in the initial radiolucency was significantly greater than in those with no change (average 1.12 mm and 0.48 mm, P<0.005). In rough-surface stems partially coated with polymethylmethacrylate (VerSys Cemented Plus), no stem subsidence and no improvement in the initial radiolucency was seen. In polished stems, stem subsidence leads to cement creep and compressive force on the bone–cement interface and can improve the initial radiolucency.
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Metadaten
Titel
The relationship between stem subsidence and improvement in the radiolucency in polished tapered stems
verfasst von
Ayumi Kaneuji
Tanzo Sugimori
Toru Ichiseki
Kiyokazu Fukui
Kengo Yamada
Tadami Matsumoto
Publikationsdatum
01.10.2006
Verlag
Springer-Verlag
Erschienen in
International Orthopaedics / Ausgabe 5/2006
Print ISSN: 0341-2695
Elektronische ISSN: 1432-5195
DOI
https://doi.org/10.1007/s00264-006-0112-0

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