Preoperative Femoral Nerve Block Did Not Reduce Oral Opioid Consumption at 24 Hours and Increased Risk of Noninjurious Falls After Hip Arthroscopy.

Abstract

Xing JG, Abdallah FW, Brull R, Oldfield S, Dold A, Murnaghan ML, Whelan DB. Preoperative femoral nerve block for hip arthroscopy: a randomized, triple-masked controlled trial. Am J Sports Med. 2015;43(11):2680-7. ### Question: In adults having hip arthroscopy, what is the analgesic effect of preoperative femoral nerve block (FNB)? ### Design: Randomized (allocation concealed), blinded (patients, clinicians performing the block, intraoperative anesthesiologists, surgeons and surgical staff, data collectors, and nurses), controlled trial with 7 days of follow-up. ### Setting: Women’s College Hospital in Toronto, Ontario, Canada. ### Patients: 52 patients 18 to 65 years of age (mean age, 32 years; 70% men) had hip arthroscopy by 1 of 2 fellowship-trained orthopaedic surgeons, spoke English as a first language, had American Society of Anesthesiologists classifications I to III, and had a body mass index of <38 kg/m2. 96% of patients completed follow-up. ### Intervention: Ultrasound-guided preoperative FNB with …