Utility of an index metacarpal cortical thickness application as an osteoporosis screen in distal radius fracture patients aged over 50

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Hymer, Isobel
Sivakumar, Brahman
Bindra, Randipsingh
Awal, Wasim
Robinson, Ann
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2020
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Abstract

BACKGROUND: Following wrist fracture, it is desirable to identify patients with osteoporosis. A smartphone-based application (BoneGauge) that uses second metacarpal cortical thickness ratio (2MCP) measured on X-ray has been proposed. This study aims to validate this application using dual-energy X-ray absorptiometry scan in a cohort of patients with distal radius fractures. METHODS: Thirty subjects aged 50 and over who sustained low-energy fractures of the radius were recruited and measurements were completed by two independent observers using the application. RESULTS: The interrater reliability as a screening tool was insufficient (κ = 0.61). Using the 2MCP threshold of 60% for detection of osteopaenia or osteoporosis, we found insufficient correlation between the dual-energy X-ray absorptiometry scan and the two sets of readings using the application (κ = 0.28 and 0.35, respectively). CONCLUSION: On the basis of these results, 2MCP of 60% is not sensitive enough to be used as a screening tool via a smartphone application for assessment of osteoporosis risk.

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ANZ Journal of Surgery
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Clinical sciences
Science & Technology
Life Sciences & Biomedicine
Surgery
metacarpal cortical ratio
orthopaedic surgery
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Hymer, I; Sivakumar, B; Bindra, R; Awal, W; Robinson, A, Utility of an index metacarpal cortical thickness application as an osteoporosis screen in distal radius fracture patients aged over 50, ANZ Journal of Surgery, 2020, 90 (6), pp. 1067-1069
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