Ultrasound-guided Sciatic Nerve Block in Below Knee Amputation Surgery

Ultrasound -Guided Sciatic Nerve Block in Below Knee Amputation Surgery: Subgluteal Versus Popliteal

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03394014

Enrollment

Registered

2018-01-09

Start date

2017-01-01

Completion date

2017-07-01

Last updated

2018-01-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Sciatic Nerve Block

Brief summary

56 ASA physical status II and III patients, aged 45-75 year, undergoing elective below knee amputation were randomly assigned to receive either sciatic nerve block using a popliteal approach or a sub gluteal approach. Patients in both groups received same amount of LA and additional ultrasound guided femoral nerve block to ensure sensory block of the medial side of the leg. Success of the block was considered when the block is solid and doesn't require shifting to GA

Detailed description

56 ASA physical status II and III patients, aged 45-75 year, undergoing elective below knee amputation were randomly assigned to receive either sciatic nerve block using a popliteal approach (group P, n 28) or a sub gluteal approach (group G, n 28). Patients in both groups received same amount of LA (25 ml of bupivacaine 0.5 %) and additional ultrasound guided femoral nerve block by 10 ml of bupivacaine 0.5% to ensure sensory block of the medial side of the leg. Time to complete sensory and motor block, time taken to perform the block, block-related complications, block duration, time for asking for rescue analgesia in the first 24 h were recorded and both patients and surgeons were asked about their level of satisfaction. Success of the block was considered when the block is solid and doesn't require shifting to GA

Interventions

PROCEDUREsciatic nerve block

blocking sciatic nerve either at the subgluteal area or the popliteal region for effective anesthesia and analgesia during below knee amputation

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

HEALTH_SERVICES_RESEARCH

Masking

TRIPLE (Subject, Caregiver, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

45 Years to 75 Years

Healthy volunteers

Inclusion criteria

* ASA physical status II and III patients * aged 45-75 years, * undergoing elective below knee amputation

Exclusion criteria

* patients who refused to participate in the study, * those having allergy to local anaesthetics, * or having contraindications to regional anaesthesia (having neurologic or neuromuscular disease, on anticoagulation therapy, or having skin infection at the site of needle insertion).

Design outcomes

Primary

Measure	Time frame	Description
to compare between the two techniques as regards the success rate.	24 hours	Success was considered when the block provided solid analgesia with no need to shift to GA

Secondary

Measure	Time frame	Description
time taken to perform the block	10-20 min	time required to perform either block

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026