title: Femoral nerve block versus adductor canal block for postoperative pain control after anterior cruciate ligament reconstruction: A randomized controlled double blind study.
abstract: BACKGROUND
  The objective of this study was to evaluate the reliability of the postoperative pain control using adductor canal block (ACB) compared that using the femoral nerve block (FNB) in patients with anterior cruciate ligament reconstructions (ACLR).
  
  
  METHODS
  One hundred and twenty-eight patients who had been scheduled to patellar graft ACLR were included in this double blind study, and were randomly allocated into two groups; group ACB and group FNB (64 patients each). All patients received general anesthesia. At the end of the surgery, patients in group FNB received a FNB and those in group ACB received an ACB. The postoperative pain (visual analog scale [VAS]) and muscle weakness were assessed in the postoperative care unit and every 6 h thereafter for 24 h. The total morphine requirements were also recorded.
  
  
  RESULTS
  Patients in group ACB had significantly higher VAS (at 18 h and 24 h), higher morphine consumption, but significantly less quadriceps weakness than those in group FNB.
  
  
  CONCLUSIONS
  In patients with patellar graft ACLR, the ACB can maintain a higher quadriceps power, but with lesser analgesia compared with the FNB.
authors.affiliation: Lecturer of Anesthesia, Ain Shams University, Cairo, Egypt.
authors.forename: Mohamed Sayed
authors.initials: MS
authors.lastname: El Ahl
keywords: Anesthetic techniques; anesthetics local; equipment; femoral; regional; ropivacaine; ultrasound machines