Comparison Between Percutaneous Femoral Nerve Neuromodulation Associated With Femoral Nerve Block and Standard Clinical Practice in Patients Undergoing Knee Arthroplasty.

Percutaneous Femoral Nerve Neuromodulation for Postoperative Analgesia and Functional Recovery Following Knee Arthroplasty.

The goal of this clinical trial is to compare the maximum isometric contraction force differential of the quadriceps in the postoperative period after the use of a peripheral nerve neuromodulation program in patients undergoing knee arthroplasty. The main questions it aims to answer are if the combination of a peripheral neuromodulation program in the perioperative period improves analgesic quality and short-term functional recovery in patients undergoing knee arthroplasty,

Participants will be asked to reach a maximum knee extension prior to neurostimulation Patients will have the electrodes inserted under direct ultrasound vision and placed near the femoral nerve.

Researchers will compare whether there is a difference in both quadriceps contraction force and analgesia between the stimulated group and the control group.

Inclusion Criteria:

• Over 18 years
• Those who sign the informed consent
• Not pregnant
• Cognitive capacity that allows subjective postoperative evaluations.

Exclusion Criteria:

• Under 18 years old
• IC rejection or withdrawal
• Pregnancy
• Cognitive impairment
• Contraindication for Regional Anesthesia