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Download as PDF; Printable version; In other projects Wikidata item; ... Coccyx/tailbone (os coccygis) ... Old image: This page was last ...
The coccyx (pl.: coccyges or coccyxes), commonly referred to as the tailbone, is the final segment of the vertebral column in all apes, [1] and analogous structures in certain other mammals such as horses. In tailless primates (e.g. humans and other great apes) since Nacholapithecus (a Miocene hominoid), [2] [3] the coccyx is the remnant of a ...
The number of vertebrae in a region can vary but overall the number remains the same. In a human spinal column, there are normally 33 vertebrae. [3] The upper 24 pre-sacral vertebrae are articulating and separated from each other by intervertebral discs, and the lower nine are fused in adults, five in the sacrum and four in the coccyx, or tailbone.
Cross section image: pelvis/pelvis-e12-15—Plastination Laboratory at the Medical University of Vienna; pelvis at The Anatomy Lesson by Wesley Norman (Georgetown University) (femalepelvicdiaphragm, malepelvicdiaphragm) Coccyx pain, tailbone pain, coccydynia (Peer-reviewed medical chapter, available free online at eMedicine)
The tailbone, at the end of the spine, has lost its original function in assisting balance and mobility, though it still serves some secondary functions, such as being an attachment point for muscles, which explains why it has not degraded further. In rare cases, congenital defect results in a short tail-like structure being present at birth ...
The anococcygeal body (anococcygeal ligament or anococcygeal raphe) is a fibrous median raphe in the floor of the pelvis, which extends between the coccyx and the margin of the anus. It is composed of fibers of the levator ani muscle that unite with the muscle of the opposite side, muscle fibres from external anal sphincter , and fibrous ...
The anococcygeal nerve is a sensory nerve of the pelvis [1] that arises from the coccygeal plexus. [2] It pierces the coccygeus muscle and the sacrotuberous ligament to supply a small area of skin between the coccyx and anus, [3] as well as the sacrococcygeal joint.
"Ganglion Impar Injections to Treat Tailbone Pain" at www.TailboneDoctor.com "Treatment of coccydynia by injection of local anesthetic to the ganglion impar", at coccyx.org; figures/chapter_32/32-6.HTM: Basic Human Anatomy at Dartmouth Medical School; Tailbone pain (coccyx pain, coccydynia) Peer-reviewed medical article online at eMedicine ...