Benefits of the Femoral Nerve Block in Total Knee Replacements: Analytical and Descriptive Study of a Series of 35 Cases

Abstract

This study aims to analyze the effectiveness of femoral block in postoperative analgesia for total knee prostheses and evaluate the immediate functional outcomes in patients who received this type of analgesia. Methods: A retrospective study was conducted on 35 cases of total knee replacement between January 2017 and December 2020. Epidemiological, clinical, and preoperative radiological data were collected. The femoral block was performed using ultrasound guidance, and the anaesthetic product used was diluted bupivacaine. Different analgesia protocols were used, and postoperative follow-up was conducted to assess clinical and radiological outcomes. Results: The study included 35 patients with a mean age of 64 years, predominantly female (77.7%). Most patients were in good health without specific medical history. Knee osteoarthritis with genu varum was the most common indication for total knee replacement. The femoral block was successfully performed in all cases. The average postoperative stay was 8 days, and the immediate functional outcomes were satisfactory, with an average flexion of 90° and walking assistance within 6 days. Conclusion: The study demonstrates the effectiveness of femoral block in providing postoperative analgesia for total knee replacement. The immediate functional outcomes were favorable, with patients achieving satisfactory flexion and early mobility. The multimodal approach to analgesia, including the femoral block, proved beneficial in optimizing pain management and facilitating rapid recovery after surgery.