Precision of Bone Mineral Density Measurements Around Total Ankle Replacement Using Dual Energy X-ray Absorptiometry.

Journal of Clinical Densitometry : the Official Journal of the International Society for Clinical Densitometry
Carmelo MessinaLuca Maria Sconfienza

Abstract

Joint prosthesis survival is associated with the quality of surrounding bone. Dual-energy X-ray absorptiometry (DXA) is capable to evaluate areal bone mineral density (BMD) around different prosthetic implants, but no studies evaluated periprosthetic bone around total ankle replacement (TAR). Our aim is to determine the precision of the DXA periprosthetic BMD around TAR. Short-term precision was evaluated on 15 consecutive patients. Each ankle was scanned 3 times both in the posteroanterior (PA) and lateral views with a dedicated patient positioning protocol. Up to four squared regions of interest (ROIs) were placed in the periprosthetic bone around tibial and talar implants, with an additional ROI to include the calcaneal body in the lateral scan. Coefficient of variation (CV%) and least significant change were calculated according to the International Society for Clinical Densitometry. The lateral projection showed lower mean CV values compared to the PA projection, with an average precision error of 2.21% (lateral scan) compared to 3.34% (PA scans). Overall, the lowest precision error was found at both "global" ROIs (CV = 1.25% on PA and CV = 1.3% on lateral). The highest CV value on PA was found at the medial aspect of tala...Continue Reading

Citations

Dec 14, 2019·European Radiology·Domenico AlbanoLuca Maria Sconfienza
Sep 1, 2019·Aging Clinical and Experimental Research·Gloria BonaccorsiGiuseppe Guglielmi
Jan 19, 2022·La Radiologia medica·Alberto Stefano TagliaficoFederica Rossi

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