Coccygeus (Left) (Musculus coccygeus)
Educational content only — not medical advice.
Anatomy
The coccygeus (or ischiococcygeus) is a triangular pelvic floor muscle situated posterior to the levator ani. It extends from the ischial spine to the lateral margins of the sacrum and coccyx, intimately blended with the sacrospinous ligament. In this BP3D model, the muscle is represented across two separate mesh parts (part 2).
Origin & insertion
From the ischial spine and sacrospinous ligament to the lateral margin of the coccyx and lower sacrum.
Action
Pulls the coccyx anteriorly and elevates and supports the pelvic floor.
Innervation
Anterior rami of sacral spinal nerves S4 and S5.
Clinical notes
Chronic tension or injury during childbirth may lead to persistent coccydynia and pelvic floor myofascial pain syndrome.
Related structures
Educational references
FAQ
What is the role of the Coccygeus (Left)?
The coccygeus (or ischiococcygeus) is a triangular pelvic floor muscle situated posterior to the levator ani. It extends from the ischial spine to the lateral margins of the sacrum and coccyx, intimately blended with the sacrospinous ligament. In this BP3D model, the muscle is represented across two separate mesh parts (part 2).
Why is the Coccygeus (Left) clinically important?
Chronic tension or injury during childbirth may lead to persistent coccydynia and pelvic floor myofascial pain syndrome.
Source & license
BodyParts3D, © The Database Center for Life Science licensed under CC Attribution 4.0 International (https://creativecommons.org/licenses/by/4.0/). license details