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Population Differences in Glenoid Fossa Dimensions: A 3‐D Geometric Morphometric Study
Author(s) -
Maloney Marvelle Tekola,
Pagano Anthony Santino,
Marquez Samuel
Publication year - 2011
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.25.1_supplement.866.7
Subject(s) - fossa , postcrania , scapula , context (archaeology) , anatomy , population , orthodontics , medicine , geography , geology , paleontology , archaeology , taxon , environmental health
The postcranial skeleton has long been studied within the context of modern human variation. Populations from cold and warm climates have been shown to exhibit shorter and longer limbs, respectively. This study tests whether the dimensions of the glenoid fossa and overall scapula also vary between populations from temperate and tropical climates. Three‐dimensional landmark coordinate data was collected from a sample of Euroamerican (EA; n=15) and Afroamerican (AA; n=15) scapulae from the division of Anthropology of the American Museum of Natural History in New York. Coordinate data from each individual was optimally scaled and superimposed as part of a Generalized Procrustes Analysis. Surface area of the glenoid fossa and the volume of humeral head accommodated within it were synthesized from interlandmark distances. It was found that the EA possessed significantly (p<0.05) taller (between the superior and inferior scapular angles) and narrower (between the acromioclavicular joint and medial boundary of the spine) scapular shape. However, there was no significant difference in the dimensions of the glenoid fossa. The results suggest that the overall proportions of the scapula share a closer relationship to limb proportion and ancestry than glenoid fossa morphology. Grant Funding Source : SUNY Downstate Medical School