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7.4: Bone Shape Classifications

  • Page ID
    53605
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    Bone Shape Classifications

    There are six types of bones in the human body: long, short, flat, irregular, sesamoid and sutural.

    Shape

    Description

    Example

    long bones

    Longer that they are wide

    humerus, radius, ulna, femur, tibia fibula

    short bones

    Length and wide are about the same

    bones of the wrist and ankle

    flat bones

    They are flat

    bones of the skull, sternum, ribs, and hip

    irregular bones

    Shape does not fit any of the other descriptions

    ethmoid, sphenoid bone, vertebra, sacrum

    sesamoid bones

    Oval shaped bones located within tendons

    patella

    sutural bones

    Small bones located between flat bones of the skull at the suture

    Wormian bones of skull (small irregular bones embedded in a cranial suture)