coccygeus muscle


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coc·cyg·e·us mus·cle

[TA]
striated pelvic muscle associated with the deep (pelvic) aspect of the sacrospinous ligament, forming part of the pelvic diaphragm; origin, spine of ischium and sacrospinous ligament; insertion, sides of lower part of sacrum and upper part of coccyx; action, with the sacrospinous ligament assists in support of pelvic floor, theoretically increasingly so when intra-abdominal pressures increase; nerve supply, third and fourth sacral.

coc·cyg·e·us mus·cle

(kok-sij-ē'ŭs mŭs'ĕl) [TA]
Origin, spine of ischium and sacrospinous ligament; insertion, sides of lower part of sacrum and upper part of coccyx; action, assists in support of pelvic floor, especially when intraabdominal pressures increase; nerve supply, third and fourth sacral.
Synonym(s): musculus coccygeus [TA] , coccygeal muscle, ischiococcygeus, musculus ischiococcygeus.
References in periodicals archive ?
The coccygeus muscle is estimated between in the direction of 4 and 8 o'clock.
Full term ANOC Anococcygeal raphe B Bladder CCM Coccygeus muscle CL Cardinal ligament Cx Coccyx EAS External anal sphincter ICM Iliococcygeus muscle Obt Obturator internus muscle Pb Perineal body PCM Pubococcygeus muscle Pm Perineal membrane PRM Puborectalis muscle Ps Pubic symphysis PUL Pubourethral ligament R Rectum U Urethra Umb Umbilical ligament USL Uterosacral ligament Ut Uterus V Vagina Table 2: Biomechanical properties of endopelvic fascia constituents.
(4) Exposure and direct visualization of the sacrospinous ligament coccygeus muscle complex require adequate dissection of the pararectal space, avoiding injury to the rectum.
The relevant anatomy including the ischial spine, the sacrospinous ligament, the coccygeus muscle, and the lateral side wall with White's line, is identified (Fig.
In all cases the lesion was located within the retrorectal space, which is defined anteriorly by the rectum, posteriorly by the sacrum, superiorly by the peritoneal reflection, inferiorly by the elevator ani and coccygeus muscle, and laterally by the ureters and iliac vessels.
To relax the coccygeus muscle that may be tight and holding the coccyx forward.
Also aiding in continence is the levator ani, coccygeus muscles, and endopelvic fascia, which resemble a sling at the base of the pelvis (Donovan & Terrell, 2018; Koelbl et al., 2013).
(1) The ischioanal fossa is inferior to the pelvic diaphragm, which comprises the levator ani and coccygeus muscles.
The pelvic floor consists of several muscles, primarily the levator ani and coccygeus muscles. The levator ani is further made up of the pubococcygeus, puborectalis, and iliococcygeus muscles.
This diaphragm consists of the Levator Ani (LA) and coccygeus muscles along with their superior and inferior investing layers of fasciae.
The pudendal nerve arises from sacral nerves S2-S4 and, after passing between the piriformis and coccygeus muscles, leaves the pelvis through the distal part of the greater sciatic foramen.