A Comparison Between Posterior, Lateral and Medial Approaches for Ultrasound-guided Popliteal Block

Not Applicable

Completed

• Conditions: Nerve Pain
• Interventions: Procedure: popliteal block

• Registration Number: NCT06489210
• Lead Sponsor: Helwan University

Brief Summary

Background: Popliteal block is a widely used technique to provide anesthesia or analgesia for below-knee surgical procedures. In this study, the investigators compare ultrasound-guided popliteal blocks via posterior, lateral, and medial approaches to find out the approach with the best outcome.

Detailed Description

Methods: In this randomized, controlled clinical trial, one hundred and twenty ASA physical status of class I and II patients undergoing below-knee surgery were involved. These patients were divided into three equal groups at randomly based on the route assigned for the US-guided popliteal block: the posterior, lateral, and medial approach groups. In this study, technical characteristics \[number of attempts to get the proper injection site and block performance time\], anesthetic and analgesic characteristics \[success rate, block onset, potency, and duration, time to ask, and the consumed amount of postoperative analgesia\], discomfort rate in respect to position and needle insertion and the associated complications were recorded.

Study Timeline

• Study Start: 2018-04-01
• Primary Completion: 2021-04-30
• Study Completion: 2021-04-30
• Study First Submitted: 2024-06-20
• Status Verified: 2024-07
• Study First Submitted QC: 2024-07-03
• Last Update Submitted: 2024-07-03
• Study First Posted: 2024-07-05
• Last Update Posted: 2024-07-05

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 120

Inclusion Criteria

This study included

• ASA physical status (PS) class I and II
• weighing 70-85 kg,
• undergoing elective below knee surgeries

Exclusion Criteria

• patients who refused to participate in the study
• those having an allergy to local anesthetics
• peripheral neuropathy, coagulopathy
• diabetes mellitus
• severe hepatic
• renal impairment
• infection, mass and crush injury or open wound at the nerve block site
• patients receiving chronic analgesic therapy.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
poplitea block medial approach group	popliteal block	ultrasound guided sciatic nerve block at popliteal fossa through medial approach 20ml of the selected local anesthetic mixture (10ml of 0.5% bupivacaine mixed with 10ml of 2% lidocaine, each with 1:200,000 epinephrine) was injected incrementally
popliteal block lateral approach group	popliteal block	ultrasound guided sciatic nerve block at popliteal fossa through lateral approach 20ml of the selected local anesthetic mixture (10ml of 0.5% bupivacaine mixed with 10ml of 2% lidocaine, each with 1:200,000 epinephrine) was injected incrementally
popliteal block posterior approach group	popliteal block	through posterior approach ultrasound guided sciatic nerve block at popliteal fossa 20ml of the selected local anesthetic mixture (10ml of 0.5% bupivacaine mixed with 10ml of 2% lidocaine, each with 1:200,000 epinephrine) was injected incrementally

Primary Outcome Measures

Name	Time	Method
assessment of intraoperative and postoperative pain in different groups after intervention	24 hours after operation	pain severity levels via visual analogue scale (VAS). VAS is a 10 cm horizontal line labeled "no pain" at one end and "worst pain" imaginable on the other end. The patient was asked to mark on this line where the intensity of the patient lies

Trial Locations

Locations (1)

Zagazig University Hospitals; 🇪🇬 Zagazig, Egypt