Title: Changes in contact area characteristics of the ankle after a cartilage biopsy at the postero-medial rim of the talar dome
Authors: Matricali, Giovanni ×
Bartels, Ward
Labey, L
Dereymaeker, E
Luyten, Frank
Vander Sloten, Jozef #
Issue Date: Nov-2009
Publisher: W.B. Saunders
Series Title: Osteoarthritis and Cartilage vol:17 issue:11 pages:1477-1484
Abstract: Objective: Study the changes in local and generalized biomechanical characteristics of the ankle joint, associated with a well defined cartilage biopsy at the postero-medial rim of the talar dome, to evaluate its safety.
Methods: Ten cadaver ankles were (sub-) physiologically loaded pre- and post-biopsy; in neutral position, 10° of plantar-flexion (PF) and 10° of dorsi-flexion (DF). Fuji film was used as transducer. Qualitatively, the coverage of the biopsy by the tibial plafond, and changes in the shape
of the footprint were analyzed. Quantitatively, the pressure profile plot, normalized-tibio-talar contact area and the centroid position of pressure were examined. Results were reported as a mean for all specimens, and as individual values for every single specimen as well.
Results: Mean results did not show significant changes, but those of some single specimens did. The majority of those changes were in PF. Some occurred in N, and besides two exceptions none occurred in DF. Two specimens did not show any change. One specimen showed an isolated quantitative change. Seven specimens showed both qualitative and quantitative changes. However, all changes were of low-magnitude and contact stresses did not show any rebound effect.
Conclusions: Although biopsies at the postero-medial rim of the talar dome did not induce on average significant changes in quantitative contact characteristics, few specimens did show some alterations. Currently, the investigated biopsy site seems safe, but long term follow-up studies in patients are needed for confirmation.
ISSN: 1063-4584
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Orthopaedics Section (-)
Rheumatology Section (-)
Biomechanics Section
× corresponding author
# (joint) last author

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