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

Helwan University

Status: Completed

Conditions: Nerve Pain

Treatments: Procedure: popliteal block

Study type: Interventional

Funder types: Other

Identifiers

NCT06489210

4428-4-3-2018

Details and patient eligibility

About

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.

Full 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.

Enrollment: 120 patients

Sex: All

Ages: 21 to 50 years old

Volunteers: Accepts Healthy Volunteers

Inclusion and exclusion criteria

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.

Trial design

Primary purpose: Supportive Care

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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120 participants in 3 patient groups

popliteal block posterior approach group

Active Comparator group

Description:

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

Treatment:

Procedure: popliteal block

popliteal block lateral approach group

Active Comparator group

Description:

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

Treatment:

Procedure: popliteal block

poplitea block medial approach group

Active Comparator group

Description:

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

Treatment:

Procedure: popliteal block