Percutaneous femoral artery puncture: practice and anatomy.

In a survey of the superficial landmarks used to select the site of puncture of the femoral artery for angiography, the inguinal skin crease was most popular, preferred by 39.2% of angiographers. The maximal femoral pulse irrespective of the position of the skin crease was the next most popular landmark (24.7%). Bony landmarks were least popular (13.0%). The majority (73.7%) of those using the skin crease punctured at the same level or distal to it. The relationship of these superficial landmarks to the common femoral artery (CFA) and its bifurcation were investigated. The inguinal skin crease was distal to the bifurcation of the CFA in 71.9% of limbs (mean, 0.61 cm). The maximal femoral pulse was over the CFA in 92.7% of limbs, and the CFA was projected over the medial aspect of the femoral head in 77.9% of limbs. The use of the inguinal skin crease is a popular though unreliable guide for puncture of the CFA. Use of the maximal femoral pulse will enable more constant puncture of the CFA.