The inferior pubic ligament — a curved fibrous band connecting the inferior pubic rami along the inferior margin of the pubic symphysis, forming the apex of the pubic arch.
Provides the inferior boundary of the pubic symphysis, resisting inferior diastasis and shear forces at the pubic joint.
The arcuate pubic ligament is the reference for the pubic arch angle measured in pelvic outlet assessment. In pelvic ring injuries, the symphysis pubis disruption detaches the arcuate ligament. In symphysiotomy (emergency obstetric procedure), this ligament is divided to widen the pelvic outlet.
Anterior-posterior compression force disrupting the pubic symphysis and arcuate ligament producing pubic diastasis, managed by symphyseal plating combined with posterior SI fixation for stability.
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