Regional maps of rib cortical bone thickness and cross‐sectional geometry

• DOI: 10.1111/joa.13045
• Publication Date: 2019-06-21T13:30:26Z
• Authors: Sven A. Holcombe; Yun‐Seok Kang; Brian A. Derstine; Stewart C. Wang; Amanda M. Agnew
• Keywords: Adult; Aged, 80 and over; Male; Models, Anatomic; Medicine (General); cortical bone; rib; computed tomography; Ribs; Organ Size; cortical thickness; Middle Aged; Young Adult; 03 medical and health sciences; 0302 clinical medicine; computational models; Health Sciences; Cortical Bone; Humans; Female; Tomography, X-Ray Computed; cross-sectional geometry; Aged

Here we present detailed regional bone thickness and cross-sectional measurements from full adult ribs using high resolution CT scans processed with a cortical mapping technique. Sixth 33 subjects ranging 24 to 99 years of age were used produce average maps provide ± 1SD corridors for expected cross-section properties (cross-sectional areas inertial moments) as function rib length. Results obtained data validated at specific locations direct cut sections. Individual had an accuracy (mean error) precision (SD -0.013 0.167 mm (R2 coefficient determination 0.84). CT-based measurement errors geometry -0.1 13.1% (cortical area) 4.7 1.8% (total area). Rib show the variation across typical rib's surface. The local mid-rib maxima in along pleural aspect ranged range 0.9 2.6 study population map maximum 1.4 mm. Along cutaneous aspect, 0.7 1.9 Average steady reduction total area 10% length through sternal end, whereas overall remains relatively constant majority before rising steeply towards end. On average, male contained more within given than was seen female ribs. Importantly, however, this difference driven by having larger areas, rather sex differences observed cortex sites. results here can be directly improve current human body models. Furthermore, wide validate future widely available image sources such clinical where gold standard reference measures (e.g. sections) are otherwise unobtainable.