<prompt> Iliofemoral ligament arise fromIschial tuberosityAnterior superior iliac spineIliopubic ramiAnterior inferior iliac spine  <response>: ILIOFEMORAL LIGAMENT:- Inveed Y shaped ligament of Bigelow.Lies anteriorly One of the strongest ligament.Triangular in shape. Attachments:-Apex: lower half of anterior inferior iliac spine. Base: interochanteric line. Action: prevent trunk from falling backwards in standing posture. Fibres:-Upper oblique and Lower veical fibres form thick and strong bands.Middle fibres: thin and weak. Reference: BDC 6E pg no.137 