Adductor Canal Block (ACB) vs Femoral Nerve Block (FNB) in 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.