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CTRI Number  CTRI/2024/06/069608 [Registered on: 27/06/2024] Trial Registered Prospectively
Last Modified On: 28/11/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Medical Device 
Study Design  Non-randomized, Multiple Arm Trial 
Public Title of Study   Difference in outcomes in people undergoing patella/knee cap modification in total knee replacement  
Scientific Title of Study   Comparative functional outcomes of resurfacing of Patella in patients undergoing Posterior stabilized versus Cruciate retaining Total Knee Arthroplasty: A non-randomized Clinical Trial 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Shashank Suman 
Designation  Junior resident 
Affiliation  AIIMS Bathinda 
Address  Room No-114, PG Hostel AIIMS Bathinda, Mandi dabwali road, Bathinda, punjab. pin -151001.

Bathinda
PUNJAB
151001
India 
Phone  8507208662  
Fax    
Email  Shashanksuman49@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Tarun Goyal 
Designation  Professor and head of department 
Affiliation  Aiims Bathinda 
Address  Dept of orthopaedics,AIIMS Bathinda, Mandi dabwali road, Bathinda, punjab. pin -151001.

Bathinda
PUNJAB
151001
India 
Phone  8475000283  
Fax    
Email  goyal.tarun@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Tarun Goyal 
Designation  Professor and head of department 
Affiliation  Aiims Bathinda 
Address  Dept of orthopaedics,AIIMS Bathinda, Mandi dabwali road, Bathinda, punjab. pin -151001.

Bathinda
PUNJAB
151001
India 
Phone  8475000283  
Fax    
Email  goyal.tarun@gmail.com  
 
Source of Monetary or Material Support  
AIIMS BATHINDA, Mandi-Dabwali road, bathinda,punjab, India PIN code-151001 
 
Primary Sponsor  
Name  Nil 
Address  Nil 
Type of Sponsor  Other [] 
 
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 
Shashank Suman  AIIMS BATHINDA  Orthopedics dept room no 2025, Mandi dabwali road, bathinda punjab 151001
Bathinda
PUNJAB 
8507208662

Shashanksuman49@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
All india institute of medical sciences, bathinda 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  Arm 1 -Patella resurfacing in Posterior stabilised Total knee arthroplasty  Patient will be undergoing Patella resurfacing in PS TKR and will be Followed up for 6weeks 
Intervention  Arm 2 -Patella resurfacing in cruciate retaining Total knee arthroplasty  Patient will be undergoing Patella resurfacing in CR TKR and will be followed up for 6weeks 
Comparator Agent  Arm 3 -Patella non-resurfacing in Posterior stabilised Total knee arthroplasty  Patient will not be undergoing Patella resurfacing in PS TKR and will be followed up for 6weeks 
Comparator Agent  Arm 4 -Patella non-resurfacing in Cruciate retaining Total knee arthroplasty  Patient will not be undergoing Patella resurfacing in CR TKR and will be followed up for 6weeks 
 
Inclusion Criteria  
Age From  50.00 Year(s)
Age To  75.00 Year(s)
Gender  Both 
Details  Adult patients of age between 50-75 years.
Either gender.
Patient with primary Osteoarthritis knee varus deformity with knee. 
 
ExclusionCriteria 
Details  Knee with secondary osteoarthritis.
Revision total knee arthroplasty.
Previous patellar fracture/ Patella replacement.
Hip and ankle pathology
Previous fracture around knee.
Osteomyelitis knee/ Inflammatory arthritis.
Patella femoral instability.  
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Case Record Numbers 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
Comparision of functional outcomes of patella resurfacing and non resurfacing in Total knee arthroplasty  preop, postop, 6weeks, 6months 
 
Secondary Outcome  
Outcome  TimePoints 
Comparision of functional outcomes in patients undergoing PS and CR TKR   preop, postop, 6week, 6months 
 
Target Sample Size   Total Sample Size="112"
Sample Size from India="112" 
Final Enrollment numbers achieved (Total)= "122"
Final Enrollment numbers achieved (India)="122" 
Phase of Trial   Phase 4 
Date of First Enrollment (India)   08/07/2024 
Date of Study Completion (India) 24/11/2025 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Date Missing 
Estimated Duration of Trial   Years="1"
Months="6"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Completed 
Publication Details
Modification(s)  
N/A 
Individual Participant Data (IPD) Sharing Statement

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

Response - NO
Brief Summary
Modification(s)  
AIM- To compare functional outcomes of patellar resurfacing between PS and CR TKA in patients undergoing primary TKA

Methods- A non randomized Clinical trial at tertiary center including 122 patients fulfilling inclusion criteria. Patients were allocated sequentially into four groups. Outcomes assesed preoperatively, at 6weeks and at 6months.

Results- Patellar resurfacing significantly increased surgical duration. KOOS scores showed consistent postoperative superiority in resurfacing groups at both follow ups with maximal improvement in PS resurfacing patients. WOMAC and VAS scores improved significantly without significant intergroup differences. ROM at 6 weeks and 6months was significantly higher in PS and PS resurfacing cohorts. Kujala scores were significantly higher in resurfacing groups at both follow ups, with maximal improvement in PS resurfacing patients.

COnclusion- Patellar resurfacing combined with PS design provides modest early benefit in ROM, patellofemoral function and KOOS outcomes. However by 6 months, overall functional recovery is similar across all groups. All surgical approaches yielded substantial pain relief and high patient satisfaction
 
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