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The human hand in phylogenetic perspective.

J M Landsmeer

    Bulletin of the Hospital for Joint Diseases Orthopaedic Institute
    |January 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Comparative hand studies reveal a functional continuum within the human hand's "working space." This space allows for unlimited, learned functional options, emphasizing performance control in hand evolution.

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    Area of Science:

    • Comparative anatomy
    • Primatology
    • Biomechanics

    Background:

    • Understanding hand function and structure is crucial in evolutionary biology.
    • The concept of "working space" offers a novel framework for analyzing hand morphology and function.
    • Phylogenetic analysis provides insights into the evolutionary trajectory of primate hands.

    Purpose of the Study:

    • To explore the phylogenetic concept of hand function using the "working space" framework.
    • To investigate the functional continuum within the human hand's working space.
    • To examine the role of learned behaviors and performance control in hand evolution.

    Main Methods:

    • Comparative analysis of hand structures across species.
    • Phylogenetic reconstruction of hand evolution.

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  • Functional assessment of hand movements within defined "working spaces".

    • Main Results:

    • The "working space" concept is a valuable tool for phylogenetic analysis of hand function.
    • A functional continuum exists within the human hand's working space, suggesting adaptability.
    • Human hand's functional potential is not innate but developed through learning and design.

    Conclusions:

    • The human hand exhibits a remarkable degree of functional plasticity.
    • Evolutionary pressures have shaped the hand's working space to accommodate diverse learned behaviors.
    • Performance control is a key factor in the development and utilization of hand functions.