<prompt> Aerial supply to the head and neck of femur isLateral circumflex femoral aeryMedial circumflex femoral aeryProfunda femoris aeryExternal femoral aery  <response>: The medial circumflex femoral aery internal circumflex aery, medial femoral circumflex aery is an aery in the upper thigh that helps supply blood to the neck of the femur. Damage to the aery following a femoral neck fracture may lead to avascular necrosis ischemic of the femoral neckhead . Ref - BDC 6th edi vol 2 ; pg 13-15 