Impaction grafted bone chip size effect on initial stability in an acetabular model: Mechanical evaluation

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منابع مشابه

Larger bone graft size and washing of bone grafts prior to impaction enhances the initial stability of cemented cups: experiments using a synthetic acetabular model.

BACKGROUND Bone defects after failed total hip arthroplasty can be reconstructed with impacted morselized bone grafts and a cemented cup. On the acetabular side, the effects on initial cup stability of washing bone grafts prior to impaction and bone graft size remain unclear. Related to these variables, cement penetration and inter-particle shear resistance have been suggested to be critical fa...

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Mechanical testing of impaction bone grafting in the tibia: initial stability and design of the stem.

Clinical experience of impaction bone grafting for revision knee arthroplasty is limited, with initial stability of the tibial tray emerging as a major concern. The length of the stem and its diameter have been altered to improve stability. Our aim was to investigate the effect of the type of stem, support of the rim and graft impaction on early stability of the tray. We developed a system for ...

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Acetabular impaction bone grafting in total hip replacement.

The increasing need for total hip replacement (THR) in an ageing population will inevitably generate a larger number of revision procedures. The difficulties encountered in dealing with the bone deficient acetabulum are amongst the greatest challenges in hip surgery. The failed acetabular component requires reconstruction to restore the hip centre and improve joint biomechanics. Impaction bone ...

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Mechanical considerations in impaction bone grafting.

In impaction grafting of contained bone defects after revision joint arthroplasty the graft behaves as a friable aggregate and its resistance to complex forces depends on grading, normal load and compaction. Bone mills in current use produce a distribution of particle sizes more uniform than is desirable for maximising resistance to shear stresses. We have performed experiments in vitro using m...

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Impaction grafting for acetabular revision: bringing back the bone.

Impaction grafting has been widely promoted on the acetabular side by Schreurs et al,1 with associated bone grafting and a cemented cup. The objectives of impaction grafting are to: 1) transform segmental defects into cavitary defects, 2) obtain a full compaction of the graft, 3) achieve primary stability of the cup, which is anatomically located in the acetabulum, and 4) restore bone stock. Th...

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ژورنال

عنوان ژورنال: Journal of Orthopaedics

سال: 2013

ISSN: 0972-978X

DOI: 10.1016/j.jor.2013.09.004