Anatomy Atlases: Illustrated Encyclopedia of Human Anatomic Variation: Opus I: Muscular System: Alphabetical Listing of Muscles: C: Coccygeus

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Illustrated Encyclopedia of Human Anatomic Variation: Opus I: Muscular System: Alphabetical Listing of Muscles: C

Coccygeus

Ronald A. Bergman, PhD
Adel K. Afifi, MD, MS
Ryosuke Miyauchi, MD
Peer Review Status: Internally Peer Reviewed

The coccygeal muscle varies greatly in the extent of its fleshy development. It may be doubled or partially fused with levator ani. Occasionally it is absent.

M. curvator coccygeus accessorius or sacrococcygeus anterior arises from the lower anterior part of the transverse process of the fourth sacral vertebra and inserts onto the edge of the third and fourth coccygeal vertebra.

Curvator Coccygeus Accessorius
from Luschka.

Reference
Gruber, W. (1887) Ein seltener Curvator coccygeus accessorius beim Menschen, homolog dem constanten Depressor caudae longus bei gewissen Säugethieren. Arch. Path. Anat. Physiol. Klin. Med. 109:1-4.

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