An Iliopsoas Plane Block does not Cause Motor Blockade - a Blinded Randomized Volunteer Trial.

We observed no significant reduction of maximal force of knee extension after an iliopsoas plane block. The injectate was contained in a fascial compartment previously shown to contain all sensory branches from the femoral nerve to the hip joint. The clinical consequence of selective anaesthesia of all sensory femoral nerve branches from the hip could be a reduced risk of fall compared to a traditional femoral nerve block.