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trefoil tendon --> central tendon of diaphragm

A three-lobed fibrous sheet occupying the centre of the diaphragm.

Synonym: centrum tendineum diaphragmatis, trefoil tendon.

Central tendon of perineum, the fibromuscular mass between the anal canal and the urogenital diaphragm in the median plane; midline episiotomies extend into this structure.

Synonym: centrum tendineum perinei, perineal body, savage's perineal body.