TY - JOUR
T1 - Radiographic estimation of long bone cross‐sectional geometric properties
AU - Runestad, Jacqueline A.
AU - Ruff, Christopher B.
AU - Nieh, James C.
AU - Thorington, Richard W.
AU - Teaford, Mark F.
PY - 1993/2
Y1 - 1993/2
N2 - Because of their biomechanical significance, cross‐sectional geometric properties of long bone diaphyses (areas, second moments of area) have been increasingly used in a number of form/function studies, e.g., to reconstruct body mass or locomotor mode in fossil primates or to elucidate allometric scaling relationships among extant taxa. In the present study, we test whether these biomechanical section properties can be adequately estimated using biplanar radiographs, as compared to calculations of the same properties from computer digitization of cross‐sectional images. We are particularly interested in smaller animals, since the limb bone cortices of these animals may not be resolvable using other alternative noninvasive techniques (computed tomography). The test sample includes limb bones of small (25–5,000 g) relatively generalized quadrupedal mammals—mice, six species of squirrels, and Macaca fascicularis. Results indicate that biplanar radiographs are reasonable substitutes for digitized cross‐sectional images for deriving areas and second moments of area of midshaft femora and humeri of mammals in this size range. Potential application to a variety of questions relating to mechanical loading patterns in such animals is diverse. © 1993 Wiley‐Liss, Inc.
AB - Because of their biomechanical significance, cross‐sectional geometric properties of long bone diaphyses (areas, second moments of area) have been increasingly used in a number of form/function studies, e.g., to reconstruct body mass or locomotor mode in fossil primates or to elucidate allometric scaling relationships among extant taxa. In the present study, we test whether these biomechanical section properties can be adequately estimated using biplanar radiographs, as compared to calculations of the same properties from computer digitization of cross‐sectional images. We are particularly interested in smaller animals, since the limb bone cortices of these animals may not be resolvable using other alternative noninvasive techniques (computed tomography). The test sample includes limb bones of small (25–5,000 g) relatively generalized quadrupedal mammals—mice, six species of squirrels, and Macaca fascicularis. Results indicate that biplanar radiographs are reasonable substitutes for digitized cross‐sectional images for deriving areas and second moments of area of midshaft femora and humeri of mammals in this size range. Potential application to a variety of questions relating to mechanical loading patterns in such animals is diverse. © 1993 Wiley‐Liss, Inc.
KW - Biomechanics
KW - Diaphyses
KW - Imaging techniques
KW - Small mammals
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U2 - 10.1002/ajpa.1330900207
DO - 10.1002/ajpa.1330900207
M3 - Article
C2 - 8430754
AN - SCOPUS:0027500122
SN - 0002-9483
VL - 90
SP - 207
EP - 213
JO - American journal of physical anthropology
JF - American journal of physical anthropology
IS - 2
ER -