Structural and mechanical indicators of limb specialization in primates.
Structural and mechanical indicators of limb specialization in primates.
复制标题
灵长类动物肢体特化的结构和力学指标。
DOI：
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发表时间：
1985
期刊：
影响因子：
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通讯作者：
C. Ruff
中科院分区：
文献类型：
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作者：
M. Schaffler;D. Burr;W. Jungers;C. Ruff
研究人员检查了灵长类动物的股骨和肱骨的结构力学，以确定其横截面特性如何随着四肢的功能专门化而变化。采用单束光子吸收法测量了60例非人灵长类动物（nemestrina Macaca, Macaca fascicularis, Presbytis cristata, Hylobates lar）的肱骨和股骨中轴的平均弯曲刚度。利用线性回归分析的方法评估了前肢和后肢在推进和负重方面的相对使用情况，并评估了与广义哺乳动物四足行走的偏差。结果表明，灵长类动物肱骨和股骨的平均弯曲刚度反映了前肢和后肢在运动中使用差异的程度；平均弯曲刚度与几何相似性的偏差表明广义哺乳动物四足行走的功能差异，肱骨与股骨弯曲刚度的比值可用于识别运动中后肢或前肢占优势的趋势，并可用于确定肢体的使用方式。
The structural mechanics of femora and humeri from primates representing a wide spectrum of habitual locomotor activities were examined to determine how cross-sectional properties vary with functional specializations of the extremities. Average bending rigidities of the midshaft of humerus and femur were measured in 60 individuals of four nonhuman primate species (Macaca nemestrina, Macaca fascicularis, Presbytis cristata, Hylobates lar) using single-beam photon absorptiometry. Linear regression analyses of the loge transformed data were used to assess the relative usage of the forelimb and hindlimb in propulsion and weight bearing, and to evaluate deviations from generalized mammalian quadrupedalism. The results suggest that average bending rigidities of the humerus and femur in primates reflect the extent to which the forelimb and hindlimb are used differently in locomotion; deviations of average bending rigidity from geometric similarity indicate functional variations from generalized mammalian quadrupedalism and the ratio of humeral to femoral bending rigidity can be used to identify trends towards hindlimb or forelimb dominance in locomotion and can be employed in general to determine how the limb was used.