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CTRI Number  CTRI/2025/09/094504 [Registered on: 10/09/2025] Trial Registered Prospectively
Last Modified On: 09/09/2025
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   Comparative study of ultrasound guided analgesic block injection vs local infiltration analgesia for postoperative pain relief after total knee arthroplasty 
Scientific Title of Study   Comparison of ultrasound guided dual subsartorial block and local infiltration analgesia for postoperative analgesia after total knee arthroplasty - A randomized comparative study 
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 SHYAM SUNDER 
Designation  Assistant professor  
Affiliation  Pondicherry institute of medical sciences  
Address  Dept of orthopaedics PONDICHERRY INSTITUTE OF MEDICAL SCIENCES Ganapathichettikulam Pondicherry

Pondicherry
PONDICHERRY
605014
India 
Phone  8056194019  
Fax    
Email  shyam.arun90@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr SHYAM SUNDER 
Designation  Assistant professor  
Affiliation  Pondicherry institute of medical sciences  
Address  Dept of orthopaedics PONDICHERRY INSTITUTE OF MEDICAL SCIENCES Ganapathichettikulam Pondicherry

Pondicherry
PONDICHERRY
605014
India 
Phone  8056194019  
Fax    
Email  shyam.arun90@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr SHYAM SUNDER 
Designation  Assistant professor  
Affiliation  Pondicherry institute of medical sciences  
Address  Dept of orthopaedics PONDICHERRY INSTITUTE OF MEDICAL SCIENCES Ganapathichettikulam Pondicherry

Pondicherry
PONDICHERRY
605014
India 
Phone  8056194019  
Fax    
Email  shyam.arun90@gmail.com  
 
Source of Monetary or Material Support  
PONDICHERRY INSTITUTE OF MEDICAL SCIENCES - INTRAMURAL GRANT PONDICHERRY INSTITUTE OF MEDICAL SCIENCES ,KALATHUMETTUPETTAI, GANAPATHICHETTIKULAM, KALAPET, PUDUCHERRY , INDIA , PINCODE -605014 
 
Primary Sponsor  
Name  PONDICHERRY INSTITUTE OF MEDICAL SCIENCES  
Address  PONDICHERRY INSTITUTE OF MEDICAL SCIENCES ,KALATHUMETTUPETTAI, GANAPATHICHETTIKULAM, KALAPET, PUDUCHERRY , INDIA , PINCODE -605014 
Type of Sponsor  Research institution and hospital 
 
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 Shyam sunder  PONDICHERRY INSTITUTE OF MEDICAL SCIENCES   DEPARTMENT OF ORTHOPAEDICS AND ANAESTHESIOLOGY, ORTHO OT NUMBERS 10 AND 11,ARTHROPLASTY DIVISION, PONDICHERRY INSTITUTE OF MEDICAL SCIENCES ,KALATHUMETTUPETTAI, GANAPATHICHETTIKULAM, KALAPET, PUDUCHERRY , INDIA , PINCODE -605014
Pondicherry
PONDICHERRY 
8056194019

shyam.arun90@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
PIMS INSTITUTE 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  GROUP A - DUAL SUBSARTORIAL BLOCK   Group A will receive an ultrasound-guided Dual Subsartorial Block (DSB) performed by an experienced anesthesiologist (with over 5 years of experience in ultrasound-guided regional anesthesia techniques) immediately after surgery and dressing application. The block will be administered using a prepared local anesthetic solution consisting 50ml of 0.2% ropivacaine and (2ml )8 mg of adjunct medication , 25ml in the distal femoral triangle and 25ml in proximal adductor canal.  
Comparator Agent  Group B- Local periarticular infiltration analgesia  Group B will receive Periarticular infiltration (PAI) with 50ml of 0.2% ropivacaine (100mg) + Cefuroxime 750 mg – 10 cc reconstituted in normal saline + 2 ml (8 mg) dexamethasone (total volume 62ml) administered intra operatively by the same surgeon. 
 
Inclusion Criteria  
Age From  30.00 Year(s)
Age To  85.00 Year(s)
Gender  Both 
Details  1.)Patients belonging American Society of Anesthesiologists (ASA) physical status of I-III.
2.)Patients aged 30–85 of either sex. 
 
ExclusionCriteria 
Details  1.)Body mass index (BMI) greater than 35 kg/m2
2.)Severe valgus deformity
3.)Acute/chronic kidney disease
4.)Operative limb neuropathy
5.)Known allergies to local anesthetic agent. 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant and Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
To measure the effect of ultrasound guided dual subsartorial block on postoperative analgesia during the first 24hrs in comparison to periarticular infiltration among patients undergoing total knee arthroplasty under spinal anesthesia  VAS, to measure pain intensity in both the groups in first 24 hrs.
Time for first rescue analgesia and total dose of rescue analgesia
Quadriceps strength
Quality of recovery using QOR – 15 scale
Adverse effects  
 
Secondary Outcome  
Outcome  TimePoints 
To compare the time duration for requirement of first rescue analgesia.

To compare the total number of breakthrough analgesics administered during the initial 24-hour postoperative period.

To compare the quadriceps strength by measuring the total ambulation distance & the degree of active knee extension within the first 24 hours postoperatively.

To determine the quality of recovery using QOR – 15 scale after 24 hrs of surgery in both the groups.

To record any adverse effects, such as nausea, vomiting, buckling, deep vein thrombosis, wound infection. 
AFTER 24 HOURS OF SURGERY  
 
Target Sample Size   Total Sample Size="44"
Sample Size from India="44" 
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 3 
Date of First Enrollment (India)   30/09/2025 
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="1"
Days="1" 
Recruitment Status of Trial (Global)   Not Yet Recruiting 
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 - YES
  1. What data in particular will be shared?
    Response - Individual participant data that underlie the results reported in this article, after de-identification (text, tables, figures, and appendices).

  2. What additional supporting information will be shared?
    Response -  Study Protocol
    Response -  Statistical Analysis Plan
    Response - Clinical Study Report
    Response -  Analytic Code

  3. Who will be able to view these files?
    Response - Researchers whose proposed use of the data has been approved by an independent review committee identified for this purpose.

  4. For what types of analyses will this data be available?
    Response - For individual participant data meta-analysis.

  5. By what mechanism will data be made available?
    Response - Proposals should be directed to [shyam.arun90@gmail.com].

  6. For how long will this data be available start date provided 01-03-2027 and end date provided 31-03-2030?
    Response - Beginning 9 months and ending 36 months following article publication.

  7. Any URL or additional information regarding plan/policy for sharing IPD? 
    Additional Information - NIL
Brief Summary   our study if focused on comparing the efficacy of dual subsartorial block as a targeted regional anesthesia technique for total knee replacement arthrioplasty .A direct comparison of the modality with periarticular infiltration remains unexplored in the current literature. therefore our study findlings will have significant implications for orthopaedic surgeons and anaesthesiologist enabling them to choose the most effective analgesic regimen for optimal perioperative pain management 
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