Comparing of analgesic efficacy of the popliteal sciatic block (posterior versus cross-wise approach) using ultrasound guidance in patients undergoing below knee surgeries

Comparison of efficacy of sciatic nerve in Cross-wise Approach of Popliteal sciatic nerve(CAPS) block versus Posterior approach of sciatic nerve block in patients undergoing emergency below knee surgeries– A randomized non inferiority trial. - Nil

Status

Active, not recruiting

Phases

Phase 3

Study type

Interventional

Source

CTRI

Registry ID

CTRI/2024/06/069503

Enrollment

Registered

2024-06-26

Start date

Unknown

Completion date

Unknown

Last updated

2024-07-22

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

Conditions

Health Condition 1: M958- Other specified acquired deformities of musculoskeletal system

Interventions

Intervention1: CAPS block: The patient in supine position, with the knee kept straight along with a support under the lower leg and ankle and the ultrasound machine in front of the patient. This ensur

Eligibility

Inclusion criteria

Inclusion criteria: All consecutive consenting adult patients of either gender, between 18-65 years of age, undergoing lower limb surgeries below knee under popliteal sciatic nerve block will be included in this trial

Exclusion criteria

Exclusion criteria: We will exclude patients from this trial if patient has history of allergy to local anesthetics, Patients who are pre operatively on opioids, Patient with coagulopathies or on anticoagulant therapy, infection at the injection site and significant cardiopulmonary disease

Design outcomes

Primary

Measure	Time frame
The primary objective of this trial is to evaluate the efficacy of cross-wise approach of popliteal sciatic nerve block (C) over posterior approach (P) using ultrasound in patients undergoing below knee surgeries (i.e. Onset of the sensory and motor blockade in minutes)Timepoint: The primary objective i.e. Onset of the sensory and motor blockade in both the groups will be assessed from the time of administration of block till every minute until the full sensory and motor blockade effect is achieved in minutes for the surgical anesthesia	—

Measure

Time frame

The primary objective of this trial is to evaluate the efficacy of cross-wise approach of popliteal sciatic nerve block (C) over posterior approach (P) using ultrasound in patients undergoing below knee surgeries (i.e. Onset of the sensory and motor blockade in minutes)Timepoint: The primary objective i.e. Onset of the sensory and motor blockade in both the groups will be assessed from the time of administration of block till every minute until the full sensory and motor blockade effect is achieved in minutes for the surgical anesthesia

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Secondary

Measure	Time frame
Duration of block (hrs.) using NRS scale: Transducer used: Curvilinear or Linear probe Distance of the probe from popliteal crease: Distance of the sciatic nerve from skin: Popliteal vessel visibility: Yes or No Post-block LA around both the divisions visible: Yes or No Patient comfort during the procedure: Visibility score of popliteal sciatic nerve: No. of redirections & attempts of the needle during the procedure Complications during the procedure Timepoint: Duration of block: assessed post procedure 24 hrs other following parameters will be assessed during the intervention: Transducer used,Distance of the probe from popliteal crease,distance of the sciatic nerve from skin,Popliteal vessel visibility,Post-block LA visibility around the divisions,Patient comfort, Visibility score of popliteal sciatic nerve, No. of redirections & attempts. Complications will be noted during & after the procedure.	—

Measure

Time frame

Duration of block (hrs.) using NRS scale: Transducer used: Curvilinear or Linear probe Distance of the probe from popliteal crease: Distance of the sciatic nerve from skin: Popliteal vessel visibility: Yes or No Post-block LA around both the divisions visible: Yes or No Patient comfort during the procedure: Visibility score of popliteal sciatic nerve: No. of redirections & attempts of the needle during the procedure Complications during the procedure Timepoint: Duration of block: assessed post procedure 24 hrs other following parameters will be assessed during the intervention: Transducer used,Distance of the probe from popliteal crease,distance of the sciatic nerve from skin,Popliteal vessel visibility,Post-block LA visibility around the divisions,Patient comfort, Visibility score of popliteal sciatic nerve, No. of redirections & attempts. Complications will be noted during & after the procedure.

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Countries

India

Contacts

Public ContactAdethen Gunasekaran

JIPMER

drkirthiharaj@gmail.com7598530827

Outcome results

None listed

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