Ultrasound-guided 4 in 1 block in knee surgery – An observational Clinical Trial

Backgrounds: In this study, we aimed to investigate the effect of 4 in 1 block technique, which provides blockage of the saphenous, obturator, sciatic and the nerve to vastus medialis with a single injection without the need for position change, on postoperative analgesia in knee surgeries. Our study was conducted in an observational, comperatively prospective study. A total of 62 patients who underwent knee surgery under spinal anesthesia were included in our study. In the recovery unit, they were divided into two groups according to the analgesia method; 4 in 1 block group and control group without any block. In the postoperative period, 2 nd , 4 th , 6 th , 12 th , 24 th visual analog score (VAS), sensory block, rescue analgesics, quadriceps strength at 12 th and 24 th hours were questioned. Results: The VAS value at the 2 nd , 4 th , 6 th and 12 th hours was found to be significantly lower in the block group compared to the control group. In terms of side effects, nausea-vomiting was low in the block group. A total of 10 of 16 patients with nausea were in the control group, and 4 patients with vomiting, and 1 patient with sedation were also in this group. Conclusions: We observed that 4 in 1 block is effective on postoperative analgesia, reduces opioid consumption and related side effects in knee surgery. We believe that it can be used effectively as a part of multimodal analgesia in knee surgeries.

• Publication year

  2025

• Venue

  Ain Shams Journal of Anesthesiology

• Publication date

  2025-01-01

• Fields of study

  Not labeled

• Identifiers
  DOI 10.21608/asja.2024.252446.1029
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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