Description
The fascia covering the medial surface of the obturator internus muscle thickens to form an arch-shaped tendon that attaches from the deep surface of the pubic bone to the ischial spine (Standring, 2016). As the name suggests, this tendinous arch serves as the lateral attachment point for a portion of the levator ani muscles.
References
Standring, S. (2016) Gray's Anatomy: The Anatomical Basis of Clinical Practice. Gray's Anatomy Series 41st edn.: Elsevier Limited.
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Levator Ani Muscle
The levator ani muscle is a broad muscular sheet extending from pubis to coccyx and forming most of the pelvic floor.
