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J. Funct. Biomater. 2018, 9(1), 9; https://doi.org/10.3390/jfb9010009

Trapezium Bone Density—A Comparison of Measurements by DXA and CT

1
University Clinic for Hand, Hip and Knee Surgery, Regional Hospital Holstebro, Hospital Unit West, 7500 Holstebro, Denmark
2
Department of Clinical Medicine, University of Aarhus, 8000 Aarhus, Denmark
3
Department of Radiology, Regional Hospital Holstebro, Hospital Unit West, 7500 Holstebro, Denmark
*
Author to whom correspondence should be addressed.
Received: 6 December 2017 / Revised: 15 January 2018 / Accepted: 16 January 2018 / Published: 18 January 2018
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Abstract

Bone density may influence the primary fixation of cementless implants, and poor bone density may increase the risk of implant failure. Before deciding on using total joint replacement as treatment in osteoarthritis of the trapeziometacarpal joint, it is valuable to determine the trapezium bone density. The aim of this study was to: (1) determine the correlation between measurements of bone mineral density of the trapezium obtained by dual-energy X-ray absorptiometry (DXA) scans by a circumference method and a new inner-ellipse method; and (2) to compare those to measurements of bone density obtained by computerized tomography (CT)-scans in Hounsfield units (HU). We included 71 hands from 59 patients with a mean age of 59 years (43–77). All patients had Eaton–Glickel stage II–IV trapeziometacarpal (TM) joint osteoarthritis, were under evaluation for trapeziometacarpal total joint replacement, and underwent DXA and CT wrist scans. There was an excellent correlation (r = 0.94) between DXA bone mineral density measures using the circumference and the inner-ellipse method. There was a moderate correlation between bone density measures obtained by DXA- and CT-scans with (r = 0.49) for the circumference method, and (r = 0.55) for the inner-ellipse method. DXA may be used in pre-operative evaluation of the trapezium bone quality, and the simpler DXA inner-ellipse measurement method can replace the DXA circumference method in estimation of bone density of the trapezium. View Full-Text
Keywords: trapezium; bone mineral density; Hounsfield units; TM joint osteoarthritis; bone quality trapezium; bone mineral density; Hounsfield units; TM joint osteoarthritis; bone quality
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Breddam Mosegaard, S.; Breddam Mosegaard, K.; Bouteldja, N.; Bæk Hansen, T.; Stilling, M. Trapezium Bone Density—A Comparison of Measurements by DXA and CT. J. Funct. Biomater. 2018, 9, 9.

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J. Funct. Biomater. EISSN 2079-4983 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
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