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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/986296
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- Title
- A Plasma-sprayed titanium proximal coating reduces the risk of periprosthetic femoral fracture in cementless hip arthroplasty
- Related
- Bio-medical materials and engineering, Vol. 25, Issue 3, (2015), p.267-278
- DOI
- 10.3233/BME-151279
- Publisher
- IOS Press
- Date
- 2015
- Author/Creator
- Miles, Brad
- Author/Creator
- Walter, William L
- Author/Creator
- Kolos, Elizabeth
- Author/Creator
- Waters, Tim
- Author/Creator
- Appleyard, Richard
- Author/Creator
- Gillies, R. Mark
- Author/Creator
- Donohoo, Shane
- Author/Creator
- Ruys, Andrew J
- Description
- Background: The design of femoral component used in total hip arthroplasty is known to influence the incidence of periprosthetic femoral fractures (PFFs) in cementless hip arthroplasty. Objective: This study was undertaken to determine if 2 potential changes to an existing ABG II-standard cementless implant – addition of a roughened titanium plasma-sprayed proximal coating (ABG II-plasma) and lack of medial scales (ABG II-NMS) could decrease the risk of PFF in the intraoperative and early postoperative periods. Methods: Six pairs of human cadaveric femurs were harvested and divided into 2 groups, each receiving either of the altered implants and ABG II-standard (control). Each implant was tested in a biomechanical setup in a single-legged stance orientation. Surface strains were measured in intact femurs, during implant insertion, cyclic loading of the bone with the implant, and loading to failure. Strains with the ABG II-standard and the altered implants were compared. Findings: ABG II-plasma showed better load-bearing capacity, with an average 42% greater failure load than that of ABG II-standard. The cortical hoop, axial and mean strains ABG II-plasma were less than those of ABG II-standard, demonstrating decreased tensile behaviour and better load transfer to the proximal femur. The final residual hoop strains in ABG II-plasma were closer to those of intact bone as compared to the standard stem. No differences in strains were observed between the standard stem and ABG II-NMS. Conclusion: The increased load-bearing capacity and decreased proximal surface strains on femurs implanted with ABG II-plasma stem should reduce the risks of intraoperative and early postoperative PFF.
- Description
- 12 page(s)
- Subject Keyword
- cementless implant
- Subject Keyword
- failure load
- Subject Keyword
- periprosthetic femoral fractures
- Subject Keyword
- strain
- Subject Keyword
- titanium plasma-sprayed coating
- Resource Type
- journal article
- Organisation
- Macquarie University. Department of Medicine
- Identifier
- http://hdl.handle.net/1959.14/986296
- Identifier
- mq:40878
- Identifier
- ISSN:0959-2989
- Identifier
- mq-rm-2013013702
- Identifier
- mq_res-se-439923
- Language
- eng
- Reviewed
Macquarie University ResearchOnline
