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Coccyx

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia, Hutchinson 0.49 sec.
coccyx /coc·cyx/ (kok´siks) tail bone; the small bone caudal to the sacrum, formed by union of three to five rudimentary vertebrae, and forming the caudal extremity of the vertebral column.
coc·cyx (kksks)
n. pl. coc·cy·ges (kk-sjz, kks-jz)
The small triangular bone located at the base of the spinal column, formed by the fusion of four rudimentary vertebrae, and articulating above with the sacrum. Also called tailbone.

Coccyx
The last bone of the spinal column, consisting of three to five fused vertebrae that connect with the sacrum, a part of the pelvis.
Mentioned in: Coccyx Injuries

coccyx
collection of fused coccygeal vertebrae found in humans and apes.

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In the codified study, a person's weight moves from an even distribution on the back and the legs to being entirely balanced on the coccyx (tailbone).
The Geri-Chair Gel Overlay from Skil-Care places a gel-flotation pad beneath the coccyx and ischials to relieve interface pressure.
22) Magnetic resonance imaging (MRI) studies have demonstrated that, during voluntary contraction, the coccyx is moved ventrally toward the pubic symphysis.
 
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