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CTRI Number  CTRI/2025/08/092600 [Registered on: 07/08/2025] Trial Registered Prospectively
Last Modified On: 07/08/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Other 
Public Title of Study   Comparing Two Types of Nerve Blocks for Pain Relief After Knee Replacement Surgery 
Scientific Title of Study   Comparison of ultrasound guided femoral triangle block and adductor canal block for postoperative analgesia in total knee arthroplasty 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Lohith H T 
Designation  PG resident  
Affiliation  Vardhman Mahavir medical college and Safdarjung hospital 
Address  Department of anaesthesia and intensive care, VMMC and Safdarjung hospital, Ansari Nagar east, New Delhi,

New Delhi
DELHI
110029
India 
Phone  8296821433  
Fax    
Email  lohithht52@gmail.com   
 
Details of Contact Person
Scientific Query
 
Name  Dr Shipra Aggarwal 
Designation  Professor  
Affiliation  Vardhman Mahavir medical college and Safdarjung hospital 
Address  Department of anaesthesia and intensive care, VMMC and Safdarjung hospital, Ansari Nagar east, New Delhi,

New Delhi
DELHI
110029
India 
Phone  9818133349  
Fax    
Email  Shipra.mamc@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Shipra Aggarwal 
Designation  Professor  
Affiliation  Vardhman Mahavir medical college and Safdarjung hospital 
Address  Department of anaesthesia and intensive care, VMMC and Safdarjung hospital, Ansari Nagar east, New Delhi,

New Delhi
DELHI
110029
India 
Phone  9818133349  
Fax    
Email  Shipra.mamc@gmail.com  
 
Source of Monetary or Material Support  
Vardhman Mahavir medical college and Safdarjung hospital, ansari nagar, south delhi, Delhi, India, 110029 
 
Primary Sponsor  
Name  Vardhman Mahavir medical college and Safdarjung hospital 
Address  Ansari Nagar east, New Delhi, Delhi, 110029 
Type of Sponsor  Government medical college 
 
Details of Secondary Sponsor  
Name  Address 
Nil  Nil 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Lohith H T  Vardhman Mahavir medical college and Safdarjung hospital  Department of anaesthesia and intensive care, 3rd floor, sports injury centre, Ansari Nagar east, New Delhi,
New Delhi
DELHI 
8296821433

lohithht52@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Vardhman Mahavir medical college and Safdarjung hospital institutional ethics committee   Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: M179||Osteoarthritis of knee, unspecified,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Ultrasound guided adductor canal block  Ultrasound guided adductor canal Block will be given with 15ml 0.25% bupivacaine and 30 mcg clonidine postoperatively. Assesment of pain using NRS done postoperatively. 
Comparator Agent  Ultrasound guided femoral triangle block  Group F: Ultrasound guided Femoral Triangle Block will be given with 15ml 0.25% bupivacaine and 30 mcg clonidine postoperatively. Assesment of pain using NRS done postoperatively. 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  Patients aged 18-65 years with American Society of Anesthesiologists physical status I-III scheduled for elective unilateral Total Knee Arthroplasty 
 
ExclusionCriteria 
Details  1. Contraindications to Femoral Triangle and Adductor Canal Block.
2. Patients receiving opioids for chronic analgesic therapy.
3. Contraindication to Subarachnoid Block.
4. Inability to comprehend Numeric Rating Scale. 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant, Investigator, Outcome Assessor and Date-entry Operator Blinded 
Primary Outcome  
Outcome  TimePoints 
To compare the analgesic efficacy of ultrasound guided Femoral triangle block and adductor canal block for pain relief using the numerical rating score(NRS) at rest in patients undergoing total knee arthroplasty  At 2 hours postoperatively  
 
Secondary Outcome  
Outcome  TimePoints 
NRS at rest   At 0, 1, 4, 8 and 24 hours 
NRS on movement   At 24 hours 
Time to first rescue analgesia    
Total analgesic consumption postoperatively   In first 24 hours 
Quadriceps muscle strength using Bromage scale  At 24 hours postoperatively  
 
Target Sample Size   Total Sample Size="70"
Sample Size from India="70" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   Phase 2/ Phase 3 
Date of First Enrollment (India)   18/08/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="1"
Months="6"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Not Yet Recruiting 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary   This study is a prospective interventional randomized comparative trial, Comparing the ultrasound guided Femoral triangle block ( 15 ml of 0.25 % bupivacaine and 30 mcg clonidine) and adductor canal block ( 15 ml of 0.25% bupivacaine and 30 mcg clonidine) in patients undergoing total knee arthroplasty under subarachnoid block in a single centre in India. The primary outcome will be measured using Numerical rating score (NRS) postoperatively.  
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