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Other Terms: Crista obturatoria
This sharp ridge-like crest faces anterolaterally on the external surface of the superior ramus. It serves as the upper border of the obturator foramen and provides attachment for the obturator membrane.
Obturator derives from the Latin verb obturare denoting to occlude or cover over. A crest refers to a ridge-like projection. The Latin equivalent of the term is crista.