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[nmt] - Heath 71.68.9.122 (talk) 03:20, 29 May 2010 (UTC)
what is the coccygeal cornu - it just directs to coccyx ? --Iztwoz (talk) 12:49, 20 June 2015 (UTC)
Surfaces.—The anterior surface [of the coccyx] is slightly concave, and marked with three transverse grooves which indicate the junctions of the different segments. It gives attachment to the anterior sacrococcygeal ligament and the Levatores ani, and supports part of the rectum. The posterior surface is convex, marked by transverse grooves similar to those on the anterior surface, and presents on either side a linear row of tubercles, the rudimentary articular processes of the coccygeal vertebræ. Of these, the superior pair are large, and are called the coccygeal cornua; they project upward, and articulate with the cornua of the sacrum, and on either side complete the foramen for the transmission of the posterior division of the fifth sacral nerve.