Adductor Canal Block Versus Femoral Nerve Block With Repeated Bolus Doses Arthroplasty

Adductor channel is roughly triangular in cross section and is bounded by three muscles: quadriceps anterolaterally (specifically vastusmedialis), sartorius medially and adductor magnus posteriorly. Within this canal is the femoral artery, femoral vein, the posterior branch of the obturator nerve, and branches of the femoral nerve; specifically the saphenous nerve and nerve to vastus medialis. When the femoral artery is shown by ultrasonography 21 gauge, 50 mm needle in-plane technique and the catheter will be inserted with the peripheral nerve stimulator lateral to the femoral artery. Bupivacaine 0.25% will be applied to the catheter at 6 hours, when the first dose of catheter is inserted.and the catheter will be inserted with the peripheral nerve stimulator lateral to the femoral artery. Bupivacaine 0.25% will be applied to the catheter at 6 hours, when the first dose of catheter is inserted.

The probe is placed just below the inguinal crease , when the femoral artery is shown by ultrasonography, the femoral nerve stays in the lateral direction and 21 gauge, 50 mm needle will be advanced from the anterior to the posteriomedial with an in-plane technique and the catheter will be inserted by the peripheral nerve stimulator in the lateral femoral artery. Bupivacaine 0.25% will be applied to the catheter at 6 hours, when the first dose of catheter is inserted.