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How screw connections influence the primary stability of acetabular cups under consideration of different bone models.
Ahmed, Gafar Adam; Auge, Linda; Loke, Jessica; Fonseca Ulloa, Carlos Alfonso; Fölsch, Christian; Rickert, Markus; Ishaque, Bernd Alexander; Jahnke, Alexander.
Affiliation
  • Ahmed GA; Laboratory for Biomechanics, Justus Liebig University Giessen, Klinikstrasse 29, 35392, Giessen, Germany.
  • Auge L; Department of Orthopaedics and Orthopaedic Surgery, University Hospital Giessen and Marburg (UKGM), Klinikstrasse 33, 35392, Giessen, Germany.
  • Loke J; Laboratory for Biomechanics, Justus Liebig University Giessen, Klinikstrasse 29, 35392, Giessen, Germany.
  • Fonseca Ulloa CA; Laboratory for Biomechanics, Justus Liebig University Giessen, Klinikstrasse 29, 35392, Giessen, Germany.
  • Fölsch C; Laboratory for Biomechanics, Justus Liebig University Giessen, Klinikstrasse 29, 35392, Giessen, Germany.
  • Rickert M; Laboratory for Biomechanics, Justus Liebig University Giessen, Klinikstrasse 29, 35392, Giessen, Germany.
  • Ishaque BA; Department of Orthopaedics and Orthopaedic Surgery, University Hospital Giessen and Marburg (UKGM), Klinikstrasse 33, 35392, Giessen, Germany.
  • Jahnke A; Laboratory for Biomechanics, Justus Liebig University Giessen, Klinikstrasse 29, 35392, Giessen, Germany.
J Orthop ; 21: 302-308, 2020.
Article in En | MEDLINE | ID: mdl-32581456
INTRODUCTION: Good osteointegration of implants requires sufficient primary stability. Aim of this study was to examine the influence of screw fixation on the primary stability of press-fit cups. METHODS: Two press-fit acetabular cups were tested with regard to the influence and number of screws and their primary stability. RESULTS: For the relatively thin-walled Allofit®-S cup, an influence of the number of screws on the different forms of movement could be demonstrated. CONCLUSIONS: We see a clear influence of the cup wall thickness on the elastic deformability and accordingly on the primary stability of the examined cups.
Key words

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: J Orthop Year: 2020 Document type: Article Affiliation country: Germany Country of publication: India

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: J Orthop Year: 2020 Document type: Article Affiliation country: Germany Country of publication: India