Adductor Canal Block (ACB) vs Femoral Nerve Block (FNB) in Revision Total Knee Arthroplasty

The Effect of Femoral Nerve Block Versus Adductor Canal Block on the Quality of Recovery for Revision Total Knee Arthroplasty, a Prospective Randomized Blinded Study

This is a prospective, randomized, blinded study with a parallel design and an allocation ratio of 1:1 for the treatment groups. The investigators seek to determine if femoral nerve block (FNB) improves the quality of recovery and improve postoperative analgesia compared with adductor canal block (ACBs) for patients undergoing revision total knee arthroplasty.

This is a prospective, randomized, blinded study with a parallel design and an allocation ratio of 1:1 for the treatment groups. A prospective study design will allow both FNBs and ACBs to be accurately assessed in an effective manner without introducing unnecessary confounding factors. Furthermore, randomization and a parallel design with equal allocation ratio will ensure timely enrollment of patients while also minimizing temporal confounders that may occur with institutional changes to clinical care protocols. Patients, nurses on the floor and physical therapists will be blinded to the nature of the patient assignment (FNB or ACB)

Inclusion Criteria:

• Adult male or female patients ages 18-80 scheduled for elective revision TKA.
• American Society of Anesthesiologists (ASA) physical status I -III
• Mentally competent and able to give consent for enrollment in the study.

Exclusion Criteria:

• Patients with any contraindications to regional anesthesia such as infection, nerve injury, anticoagulation.
• Patient refusal.
• Patients with an allergy to local anesthetics or systemic opioids.