Technical note: The effect of midshaft location on the error ranges of femoral and tibial cross-sectional parameters

American Journal of Physical Anthropology
Vladimír SládekSárka Kudrnová

Abstract

In comparing long-bone cross-sectional geometric properties between individuals, percentages of bone length are often used to identify equivalent locations along the diaphysis. In fragmentary specimens where bone lengths cannot be measured, however, these locations must be estimated more indirectly. In this study, we examine the effect of inaccurately located femoral and tibial midshafts on estimation of geometric properties. The error ranges were compared on 30 femora and tibiae from the Eneolithic and Bronze Age. Cross-sections were obtained at each 1% interval from 60 to 40% of length using CT scans. Five percent of deviation from midshaft properties was used as the maximum acceptable error. Reliability was expressed by mean percentage differences, standard deviation of percentage differences, mean percentage absolute differences, limits of agreement, and mean accuracy range (MAR) (range within which mean deviation from true midshaft values was less than 5%). On average, tibial cortical area and femoral second moments of area are the least sensitive to positioning error, with mean accuracy ranges wide enough for practical application in fragmentary specimens (MAR = 40-130 mm). In contrast, tibial second moments of area are t...Continue Reading

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Citations

Oct 6, 2012·Journal of Human Evolution·Laurent PuymerailRoberto Macchiarelli
May 23, 2012·Homo : internationale Zeitschrift für die vergleichende Forschung am Menschen·M Bleuze
Jan 30, 2013·American Journal of Physical Anthropology·Alison A MacintoshJay T Stock
Jul 25, 2015·American Journal of Physical Anthropology·Carrie S MongleFrederick E Grine
Jul 16, 2015·American Journal of Physical Anthropology·Carrie S MongleFrederick E Grine
Mar 10, 2015·Journal of Human Evolution·Carol V WardMeave G Leakey
Feb 6, 2015·La Radiologia medica·Alda BorrèCarlo Faletti
May 12, 2016·American Journal of Physical Anthropology·Hila May, Christopher Ruff
Feb 6, 2017·American Journal of Human Biology : the Official Journal of the Human Biology Council·Sirpa NiinimäkiHarri Sievänen
Feb 14, 2017·PloS One·Martin HoraVladimír Sládek
Aug 12, 2020·American Journal of Physical Anthropology·Song XingErik Trinkaus
May 19, 2021·American Journal of Physical Anthropology·An-Di YimHon-Man Liu

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