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Mineralisation and mechanical strength of the subchondral bone plate of the inferior tibial facies

Mühlhofer, H. and Ercan, Y. and Drews, S. and Matsuura, M. and Meissner, J. and Linsenmaier, U. and Putz, R. and Müller-Gerbl, M.. (2009) Mineralisation and mechanical strength of the subchondral bone plate of the inferior tibial facies. Surgical and radiologic anatomy : journal of clinical anatomy : official organ of the European Association of Clinical Anatomy, of the Collège Médical Français des Professeurs d'Anatomie, official cooperative organ of the Section of Clinical Anatomy of, Vol. 31. pp. 237-243.

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Official URL: http://edoc.unibas.ch/dok/A6005802

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Abstract

BACKGROUND: The implantation of total ankle prosthesis is one of the most challenging operations in orthopaedic surgery. The main problem that surgeons face is the fixation of the total ankle prosthesis on the tibial side. The subchondral bone plate of the distal tibia is considered the strongest region on the inferior tibial facies. Based on information about the mineralisation of the subchondral bone plate, conclusions can be made concerning the mechanical stress, age-related changes, post-surgical biomechanical situations and regions of fixation. The aim of this study was to determine the correlation between the mineralisation of the subchondral bone plate and the topical mechanical strength. METHODS: By means of CT-osteoabsorptiometry, the distribution of mineralisation in the subchondral bone plate in 18 distal Tibiae was investigated. After removal of the cartilage of the facies articularis inferior, the mechanical strength of the joint surface was measured with an indentation apparatus. The linear regression of the mineralisation density and the maximal mechanical strength to penetrate the subchondral bone plate was determined. RESULTS: Our data showed a coefficient of determination between 0.75 and 0.97 and a coefficient of correlation between 0.86 and 0.97. The T test showed significance (P > 0.05). Furthermore, we demonstrated a bicentric distribution of mineralisation patterns. The maximal mineralisation was found ventromedially and mediolaterally on the joint surface. CONCLUSION: Our study shows good correlation of mineralisation and mechanical property of the inferior tibial facies. Therefore, as the results provide information on the topographical distribution of bone quality, they could be useful for the development of new fixation methods for total ankle prosthesis.
Faculties and Departments:03 Faculty of Medicine > Departement Biomedizin > Division of Anatomy > Musculosceletal Research (Müller-Gerbl)
UniBasel Contributors:Müller-Gerbl, Magdalena
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Springer International
ISSN:0930-312X
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:24 May 2013 09:22
Deposited On:24 May 2013 09:02

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