Anococcygeal raphe
Updates to Article Attributes
The anococcygeal raphe (plural: anococcygeal raphes or raphae) refers to the midline structure that connects the anorectal junction to the coccyx. It is composed of bilateral interdigitating fibres from the iliococcygeal and pubococcygeal muscles.
The anococcygeal raphe is a thin, linear structure running from the coccyx to the anal canal measuring approximately 1-2 cm in length and 2-5 mm in width 1. It represents the junction of the endopelvic fascia and the levator ani muscles. The anococcygeal raphe can be seen on plain radiographs, CT or MRI. However, it is best seen on axial imaging at the level of the lower border of the pubic symphysis.
Terminology
The anococcygeal raphe is also known by many other names depending on the author of the paper in the literature and includes the anococcygeal ligament, coccygeal muscular raphe, levator raphe, dorsal layer of the anococcygeal ligament, and raphe of iliococcygeus muscle and pubococcygeus muscle 2.
Gross Anatomy
Origin
The connective tissue fibres of the anococcygeal raphe are derived from the pubococcygeal and iliococcygeal musclemuscles bilaterally inserting into the coccyx 3.
Clinical Importance
The anococcygeal raphe is of clinical significance as it contributes to maintaining the anatomical position of the anorectum in relation to the coccyx and the integrity of the pelvic floor muscles. This facilitates defaecation and maintains continence and sexual function 2,4.
-<p>The <strong>anococcygeal raphe</strong> refers to the midline structure that connects the anorectal junction to the coccyx. It is composed of bilateral interdigitating fibres from the iliococcygeal and pubococcygeal muscles.</p><p>The anococcygeal raphe is a thin, linear structure running from the coccyx to the anal canal measuring approximately 1-2 cm in length and 2-5 mm in width <sup>1</sup>. It represents the junction of the endopelvic fascia and the levator ani muscles. The anococcygeal raphe can be seen on plain radiographs, CT or MRI. However, it is best seen on axial imaging at the level of the lower border of the pubic symphysis.</p><h4>Terminology</h4><p>The anococcygeal raphe is also known by many other names depending on the author of the paper in the literature and includes the anococcygeal ligament, coccygeal muscular raphe, levator raphe, dorsal layer of the anococcygeal ligament, and raphe of iliococcygeus muscle and pubococcygeus muscle <sup>2</sup>.</p><h4>Gross Anatomy</h4><h5>Origin</h5><p>The connective tissue fibres of the anococcygeal raphe are derived from the pubococcygeal and iliococcygeal muscle bilaterally inserting into the coccyx <sup>3</sup>.</p><h4>Clinical Importance</h4><p>The anococcygeal raphe is of clinical significance as it contributes to maintaining the anatomical position of the anorectum in relation to the coccyx and the integrity of the pelvic floor muscles. This facilitates defaecation and maintains continence and sexual function <sup>2,4</sup>.</p>- +<p>The <strong>anococcygeal raphe</strong> (plural: anococcygeal raphes or raphae) refers to the midline structure that connects the anorectal junction to the <a href="/articles/coccyx">coccyx</a>. It is composed of bilateral interdigitating fibres from the <a href="/articles/iliococcygeal-muscle">iliococcygeal</a> and <a href="/articles/pubococcygeal-muscle">pubococcygeal muscles</a>.</p><p>The anococcygeal raphe is a thin, linear structure running from the coccyx to the <a href="/articles/anal-canal">anal canal</a> measuring approximately 1-2 cm in length and 2-5 mm in width <sup>1</sup>. It represents the junction of the endopelvic fascia and the <a href="/articles/levator-ani-muscle">levator ani muscles</a>. The anococcygeal raphe can be seen on plain radiographs, CT or MRI. However, it is best seen on axial imaging at the level of the lower border of the pubic symphysis.</p><h4>Terminology</h4><p>The anococcygeal raphe is also known by many other names depending on the author of the paper in the literature and includes the anococcygeal ligament, coccygeal muscular raphe, levator raphe, dorsal layer of the anococcygeal ligament, and raphe of iliococcygeus muscle and pubococcygeus muscle <sup>2</sup>.</p><h4>Gross Anatomy</h4><h5>Origin</h5><p>The connective tissue fibres of the anococcygeal raphe are derived from the pubococcygeal and iliococcygeal muscles bilaterally inserting into the <a title="Coccyx" href="/articles/coccyx">coccyx</a> <sup>3</sup>.</p><h4>Clinical Importance</h4><p>The anococcygeal raphe is of clinical significance as it contributes to maintaining the anatomical position of the <a title="anorectum" href="/articles/anorectum">anorectum</a> in relation to the coccyx and the integrity of the <a title="pelvic floor muscles" href="/articles/pelvic-floor-muscles">pelvic floor muscles</a>. This facilitates defaecation and maintains continence and sexual function <sup>2,4</sup>.</p>
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