The nerve preramus L4 , the femoral nerve, the obturator nerve and the communicating branch are liable to injury in the front of the ligamentum iliolumbale.

L4神经前、股神经、闭孔神经和交腰韧前方易。

(2) The nerve fibers to iliacus derived from L4, secondly from L3 and L2, and originated nearly the femoral nerve.

肌肌则股神经合干起始处发出,神经纤维主要来源于L4,其次为L3及L2。