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BAG‐S53P4 as an additive to bone allografts: A laboratory study using an uniaxial compression test
Author(s) -
David Putzer,
Johannes Fuchs,
Débora CoraçaHuber,
Ammann Christoph,
Michael Liebensteiner,
Michael Nogler
Publication year - 2015
Publication title -
journal of orthopaedic research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.041
H-Index - 155
eISSN - 1554-527X
pISSN - 0736-0266
DOI - 10.1002/jor.22953
Subject(s) - compaction , compression (physics) , compression test , yield (engineering) , interlocking , universal testing machine , composite material , materials science , medicine , structural engineering , engineering , ultimate tensile strength
We want to address the clinical issue of too sparse supply of allograft in total hip replacement and ambitions of controlling the grain size distribution. Bioglass BAG‐S53P4 was evaluated as a bone graft additive to chemically treated allografts with controlled grain size distribution. Allografts were chemically cleaned (CG) and mixed with BAG‐S53P4 additive (BG) for comparison. All samples were compacted with a dropped weight apparatus and then underwent a uniaxial compression test. The yield limit was determined by a uniaxial compression test and density was recorded while flowability was calculated. There was no difference between the yield stress limit of BG and CG after compaction ( p = 0.432). Adding BAG‐S53P4 reduced flowability and could indicate better interlocking mechanism between particles. Adding BAG‐S53P4 seems to have no impact on the yield stress limit. The extended allografts withstand the compaction equally good which makes it a valid bone substitute in total hip replacement. An in vivo loaded study is needed before clinical use can be recommended. © 2015 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 33:1875–1879, 2015.