Comparison of Continuous Femoral Nerve Block and Adductor Canal Block After Total Knee Replacement Therapy
Status:
Completed
Trial end date:
2014-11-01
Target enrollment:
Participant gender:
Summary
The blockade of the femoral nerve (FNB) is the most common postoperative pain therapy after
total knee replacement. Because of motor-driven weakness of the quadriceps muscle induced by
femoral nerve block mobilization of Patients is difficult even dangerous (falls) and hospital
stays are extended.
An alternative method could be an adductor canal block (ACB). Anatomical studies of the
adductor canal demonstrated that the adductor canal contains the saphenous nerve, a pure
sensory nerve for medial and anterior aspects of the knee and the tibia without any motor
function.
This prospective, double-blinded, randomized study investigates the effect of FNB and ACB on
quadriceps motor weakness and analgesia determined by Numeric Rating Scale (NRS).
We expect the ACB to be superior in muscle strength but equal in pain score. Both groups
receive an additional anterior sciatic nerve block for complete sensory block of the operated
knee