Adductor Canal Block Versus Femoral Nerve Block for Analgesia After Anterior Cruciate Ligament Reconstruction Arthroscopically
Adductor Canal Block Versus Femoral Nerve Block for Analgesia After Anterior Cruciate Ligament Reconstruction Arthroscopically
This study aims to compare continuous femoral nerve block with adductor canal block after anterior cruciate ligament reconstruction arthroscopically，especially in the effect on quadriceps strength; and to evaluate which regional anesthesia is more ideal for the patients postoperatively.
Forty patients with American Society of Anesthesiologists（ASA） Ⅰ-Ⅲ（no limitation of age and gender）are randomized to receive either a continuous adductor canal block(ACB) or a femoral nerve block(FNB) via a catheter (a continuous infusion of 0.2% ropivacaine, 5 mL/h for 48 hours)in the PACU immediately after the anterior cruciate ligament reconstruction arthroscopically. Patients were under general anesthesia during the operation and received a femoral nerve block with 0.25% ropivacaine 10ml before the surgery.Both groups will receive postoperatively IV patient controlled analgesia (PCA) with morphine (bolus 0.8mg,lock-out time 15 minutes, background infusion 2ml/h)beside the continuous nerve block. Patients are going to be visited for follow-up on the day of surgery and in the following two days. Quadriceps strength is assessed with the displacement of patella.VAS at rest time、degree of knee flexion、VAS at 45°flexion of the knee、dose of opioids、whether the patient has sleep disturbance are also recorded.
Inclusion Criteria:
Exclusion Criteria: