Comparison of two approaches of sciatic nerve block via ultrasound guidance

Ultrasound-guided supine popliteal sciatic nerve block: Crosswise approach to popliteal sciatic (CAPS) versus Posterior approach

Status

Active, not recruiting

Phases

Phase 3

Study type

Interventional

Source

CTRI

Registry ID

CTRI/2023/03/050911

Enrollment

Registered

2023-03-21

Start date

Unknown

Completion date

Unknown

Last updated

2023-04-03

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

Conditions

Health Condition 1: S92- Fracture of foot and toe, except ankle Health Condition 2: S82- Fracture of lower leg, including ankle

Interventions

Intervention1: Group II (CAPS Group): Patients will be given USG-guided CAPS (Crosswise approach to popliteal sciatic) block using 20ml of 0.5% Bupivacaine: CAPS: Linear or curvilinear USG probe will

Eligibility

Inclusion criteria

Inclusion criteria: Patients between age group 18-80 years undergoing below knee surgeries, ASA physical status I-III

Exclusion criteria

Exclusion criteria: Patient refusal for nerve blocks, Allergy to amide local anaesthetic drugs, Chronic opioid therapy ( >60 mg morphine daily or equivalent), Patients with thrombocytopenia/coagulopathy, on anti-coagulant and thrombolytic therapy, Morbid obesity (BMI >35 with obesity symptoms or BMI > 40), Neurological diseases, Local or systemic infection, Patients with psychiatric illness

Design outcomes

Primary

Measure	Time frame
Time to perform the blockTimepoint: (time interval from the contact of USG probe with the patient to the end of local anaesthetic injection)	—

Secondary

Measure	Time frame
1. Block onset timeTimepoint: time interval from the end of local anaesthetic injection to the achievement of complete sensory blockade of both saphenous and sciatic nerve;2. Number of needle passesTimepoint: During performance of procedure;3. Level of procedure related painTimepoint: During performance of procedure;4. Sciatic nerve visibility score and depth from skinTimepoint: During performance of procedure;5. Visual analog scale (VAS) scoresTimepoint: immediate post-operation (T1), at 2 hours (T2), 4 hours (T3), 8 hours (T4), 12 hours (T5), 16 hours (T6), 24 hours (T7), and 48 hours (T8);6. Time to first rescue analgesiaTimepoint: during 48 hr follow up;7. 48 hour rescue analgesic consumptionTimepoint: during 48 hr follow up;8. Occurrence of any adverse events/complicationsTimepoint: during 48 hr follow up	—

Measure

Time frame

1. Block onset timeTimepoint: time interval from the end of local anaesthetic injection to the achievement of complete sensory blockade of both saphenous and sciatic nerve;2. Number of needle passesTimepoint: During performance of procedure;3. Level of procedure related painTimepoint: During performance of procedure;4. Sciatic nerve visibility score and depth from skinTimepoint: During performance of procedure;5. Visual analog scale (VAS) scoresTimepoint: immediate post-operation (T1), at 2 hours (T2), 4 hours (T3), 8 hours (T4), 12 hours (T5), 16 hours (T6), 24 hours (T7), and 48 hours (T8);6. Time to first rescue analgesiaTimepoint: during 48 hr follow up;7. 48 hour rescue analgesic consumptionTimepoint: during 48 hr follow up;8. Occurrence of any adverse events/complicationsTimepoint: during 48 hr follow up

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Countries

India

Contacts

Public ContactDr Varun Singla

PGIMER Chandigarh

drvarunsinglapgi@gmail.com8427474087

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 4, 2026