Proximal tibial strain in medial unicompartmental knee replacements: A biomechanical study of implant design

Scott, C. E. H., Eaton, Mark Jonathan ORCID: https://orcid.org/0000-0002-7388-6522, Nutton, R. W., Wade, F. A., Pankaj, P. and Evans, Samuel Lewin ORCID: https://orcid.org/0000-0003-3664-2569 2013. Proximal tibial strain in medial unicompartmental knee replacements: A biomechanical study of implant design. The Bone & Joint Journal 95-B (10) , pp. 1339-1347. 10.1302/0301-620X.95B10.31644

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Abstract

As many as 25% to 40% of unicompartmental knee replacement (UKR) revisions are performed for pain, a possible cause of which is proximal tibial strain. The aim of this study was to examine the effect of UKR implant design and material on cortical and cancellous proximal tibial strain in a synthetic bone model. Composite Sawbone tibiae were implanted with cemented UKR components of different designs, either all-polyethylene or metal-backed. The tibiae were subsequently loaded in 500 N increments to 2500 N, unloading between increments. Cortical surface strain was measured using a digital image correlation technique. Cancellous damage was measured using acoustic emission, an engineering technique that detects sonic waves (‘hits’) produced when damage occurs in material.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TJ Mechanical engineering and machinery
Publisher:	The British Editorial Society Of Bone & Joint Surgery
ISSN:	2049-4394
Funders:	British Association for Surgery of the Knee and Joint Action
Date of Acceptance:	4 June 2013
Last Modified:	27 Oct 2022 09:08
URI:	https://orca.cardiff.ac.uk/id/eprint/64498

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