• Psoas approach for lumbar plexus block: It is associated with a higher risk of peridural placement 9 % - 16 % 1,38-40 when volumes greater than 20 ml are used. Neurological injury may occur with spinal or intravascular administration of the anesthetic.
• Bloqueo de plexo lumbar por abordaje psoas: Presenta aumento del riesgo de colocación peridural 9 % - 16 % 1,38-40, con volúmenes mayores a 20 ml. Puede haber administración espinal o intravascuo lar del anestésico lesión neurológica.