Figure 2
From: The highly accurate anteriolateral portal for injecting the knee
Introduction of the Needle from the Anteriolateral Portal. The reciprocating procedure device (RPD) control syringe is used with two hands to carefully introduce the needle and administer lidocaine. Depressing one plunger causes the RPD control syringe to aspirate and depressing the other causes the device to aspirate. If no fluid is obtained the needle is advanced to the medium femoral condyle.