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Cortical and Trabecular Histomorphometry of the Rib, Clavicle and Iliac Crest of Individuals from the Chiribaya Polity of Ancient Southern Coastal Peru

McCormick, Lara Elizabeth
http://rave.ohiolink.edu/etdc/view?acc_num=osu1366308878

Abstract Details

2013, Doctor of Philosophy, Ohio State University, Anthropology.
This study examined microstructural properties of bone in individuals from the ancient Peruvian polity of the Chiribaya. The three sites include San Geronimo, El Yaral, and Chiribaya Alta which represent fishing, agricultural and elite lifestyles, respectively. The purpose of the study was to test four hypotheses: 1.Variability in relative area measurements due to differential loading throughout the skeleton exist, 2. Differences in histomorphometric areal and length measurements exist among different age groups due to the effects of increasing age, 3. Differences in histomorphometric areal and length/perimeter measurements exist among individuals from Chiribaya Alta, El Yaral and San Geronimo due to variation of diet and general subsistence level activities, 4. Sex differences exist in histomorphometric areal and perimeter/length measurements in the Chiribaya sample. Sections were removed from the rib and clavicle at midshaft, and from the standardized site of clinical biopsy in the iliac crest. Data collection included areal and perimeter/length measurements on cortical bone in the rib and clavicle and a combination of cortical and trabecular bone in iliac crest specimens. Variables examined include total area (Tt.Ar.), cortical area (Ct.Ar.), endosteal area (Es.Ar.), relative cortical area (Rel.Ct.Ar.), periosteal perimeter (Ps.Pm.) and endosteal perimeter (Es.Pm.) in rib and clavicle samples. In iliac crest sections, measurements of were taken of: total area of section (Tt.Ar.), the area containing trabecular bone (Es.Ar.), cortical area (Ct.Ar.), relative cortical area (Rel.Ct.Ar.), area of trabecular bone (Tb.Ar.), relative trabecular area (Rel.Tb.Ar.), mean trabecular width (Tb.Wi.), total section diameter (Tt.Dm.), total cortical diameter (Ct.Dm.) and marrow cavity diameter (Es.Dm.). This study included variables measured on 62 rib sections, 54 clavicle section and 62 iliac crest sections of males and females of varying ages. Intra-skeletal variability was examined using 43 individuals who had all three skeletal sampling sites intact. Histomorphometric data was collected using compiled photomicrographs and ImageJ® software on a PC Tablet. Hypotheses were tested using a combination of t-tests, one-way and two-way ANOVAs, and a randomized block ANOVA. Sex differences were significant in areal and perimeter measurements in rib, clavicle and iliac crest sections, supporting Hypothesis 1. Hypothesis 2 was supported and statistically significant with every variable examined in the clavicle when comparing two sites, and with some, but not all, variables demonstrating statistical significance in the rib and iliac crest. Hypothesis 3 was not supported in the rib, clavicle, or iliac crest, suggesting that the number of older adults in the sample was not truly indicative of the Chiribaya population, or that Chiribaya individuals did not experience the degree of cortical and trabecular bone loss seen in modern populations. Intra-skeletal variability was significant with the use of a randomized block ANOVA. This study describes a general pattern for skeletal microstructural changes exhibited in the rib, clavicle and iliac crest with increasing age in an ancient Andean archaeological that can be used for comparison in future studies of past and present Andean and other skeletal populations.
Sam Stout (Advisor)
Paul Sciulli (Committee Member)
Clark Spencer Larsen (Committee Member)
Mark Hubbe (Committee Member)
368 p.
Histology; Physical Anthropology
histomorphometry; Chiribaya; skeletal biology; cortical; trabecular; rib; clavicle; iliac crest

Recommended Citations

Citations

  • McCormick, L. E. (2013). Cortical and Trabecular Histomorphometry of the Rib, Clavicle and Iliac Crest of Individuals from the Chiribaya Polity of Ancient Southern Coastal Peru [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366308878

    APA Style (7th edition)

  • McCormick, Lara. Cortical and Trabecular Histomorphometry of the Rib, Clavicle and Iliac Crest of Individuals from the Chiribaya Polity of Ancient Southern Coastal Peru . 2013. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1366308878.

    MLA Style (8th edition)

  • McCormick, Lara. "Cortical and Trabecular Histomorphometry of the Rib, Clavicle and Iliac Crest of Individuals from the Chiribaya Polity of Ancient Southern Coastal Peru ." Doctoral dissertation, Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366308878

    Chicago Manual of Style (17th edition)

osu1366308878
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© 2013, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.