Using ROSA for Challenging The TKA Standard of Care
Challenging The TKA Standard Of Care: Patient Specific Surgical Targets As Enabled By The Rosa
1 other identifier
interventional
90
1 country
1
Brief Summary
This is a prospective, randomized controlled trial using the cruciate retaining, MC Persona to comparing the conventional TKA to ROSA assisted TKA. Patients will be randomized to one of three study trial arms.
- 1.Standard of care medial parapetallar approach (Control)
- 2.ROSA PSA medial parapetallar approach
- 3.ROSA PSA medial subvastus approach Participants will be followed for 1 year post surgery with a combination of perioperative parameters, imaging, patient reported outcomes, functional outcomes, blood and tissue sampling for inflammatory information and activity levels.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for phase_4 knee-osteoarthritis
Started Apr 2024
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
January 2, 2024
CompletedFirst Posted
Study publicly available on registry
February 20, 2024
CompletedStudy Start
First participant enrolled
April 16, 2024
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 1, 2025
CompletedStudy Completion
Last participant's last visit for all outcomes
December 1, 2025
CompletedMay 14, 2025
May 1, 2025
1.6 years
January 2, 2024
May 9, 2025
Conditions
Outcome Measures
Primary Outcomes (8)
Functional Outcome - Weight-bearing CT scan
Patients will undergo a weight-bearing CT scan to examine implant migration and bone position in the knee.
Pre-operation, 1-3 days post-op, 6-weeks post-op, and 1-year post-op
Functional Outcome - 3D Ultrasound
Patients will undergo a 3D Ultrasound to measure the inflammatory characteristics including Synovial fluid and synovial thickness for fibrosis in the supra-patellar region of the knee
Pre-operation, 6-weeks post-op, 3-months post-op and 1-year post-op
Functional Outcome - Timed Up and Go test
Patients will undergo a Timed Up and Go (TUG) test. Patients will have to get up from a seated position, walk 10 feet, turn around and walk another 10 feet. This test is used to examine the function of the lower extremities. A time improvement of 2.27 Seconds will be considered clinically meaningful
Pre-operation, 6-weeks post-op, 3-months post-op and 1-year post-op
Patient health status - Knee Society Score
This will be done by comparing the Knee Society Score (KSS) Patient-reported outcome measurement questionnaire given to patients. The KSS questionnaire looks at several factors such as patient satisfaction (scale from 1-5, 5 being the best), Patient expectation (scale from 1-5, 5 being the best) and patient's pain during activities (scale from No pain to severe pain)
Pre-operation, 6-weeks post-op, 3-months post-op and 1-year post-op
Patient health status - EuroQuol Survey
This will be done by comparing the EuroQuol (EQ-5D) Patient-reported outcome measurement questionnaire given to patients. EQ-5D looks at the overall quality of life of a patient. The survey has 2 sections, the first asking the patient to best describe their health (Scale from Unable to perform the activity to no problem performing the activity) and an overall health assessment (scale 0-100, 100 being the best health you can imagine)
Pre-operation, 6-weeks post-op, 3-months post-op and 1-year post-op
Patient health status - Knee Injury and Osteoarthritis Outcome Score
This will be done by comparing the Knee Injury and Osteoarthritis Outcome score (KOOS) Patient-reported outcome measurement questionnaire given to patients. The KOOS survey looks at the pain and function of the operated knee. Patients will be asked questions about the pain they feel during activities (Scale from none-extreme) and the function of their joint (scale from none-extreme)
Pre-operation, 6-weeks post-op, 3-months post-op and 1-year post-op
Patient health status - Western Ontario and McMaster Universities Arthritis Index
This will be done by comparing the Western Ontario and McMaster Universities Arthritis Index (WOMAC) Patient-reported outcome measurement questionnaire given to patients. This survey will ask patients about the pain, stiffness and difficulty of using their knee. This survey is scaled from 0-4, 0 being none and 4 being extreme.
Pre-operation, 6-weeks post-op, 3-months post-op and 1-year post-op
Patient health status - Global Assessment
This will be done by comparing the UCLA Activity Score (UCLA) Patient-reported outcome measurement questionnaire given to patients. This survey assesses the activity level of patients on a scale from 0 - 10 with 10 being the patient regularly participates in impact sports.
Pre-operation, 6-weeks post-op, 3-months post-op and 1-year post-op
Secondary Outcomes (1)
Health Ecominics
Pre-operation, 1-3 days post-op, 6-weeks post-op, 3-months post-op
Study Arms (3)
Control
NO INTERVENTIONStandard of care medial parapetallar approach
ROSA PSA Parapatellar Approach
ACTIVE COMPARATORArm using the ROSA with PSA and medial parapetallar approach
ROSA PSA Subvastus Approach
ACTIVE COMPARATORArm using the ROSA with PSA and medial subvastus approach
Interventions
This intervention will consist of using the ROSA alongside patient-specific alignment. The knee incision will be the same as the standard of care (medial parapatellar approach).
This intervention will consist of using the ROSA alongside patient-specific alignment. The knee incision will be an alternative, quad-sparring, subvastus approach.
Eligibility Criteria
You may qualify if:
- Symptomatic osteoarthritis of the knee indicating primary total knee arthroplasty
- Varus knee deformity of 0 to 10 degrees
- Sufficient ligamentous function to warrant retention of the posterior cruciate ligament
- Between the ages of 21 and 80 inclusive
- Patients willing and able to comply with follow-up requirements and self-evaluations
- Ability to give informed consent
You may not qualify if:
- Active or prior infection
- Medical condition precluding major surgery
- Predominantly inflammatory arthropathy
- Patellectomy
- PCL deficiency
- Major coronal plane deformity
- Prior trauma to the tibia or femur resulting in malalignment, canal occlusion, or open reduction and internal fixation
- Valgus alignment
- Neurologic condition limiting mobility
- Bone defects requiring augments, cones and/or stemmed implants
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
University Hospital
London, Ontario, Canada
Related Publications (28)
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PMID: 31255408BACKGROUND
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Brent Lanting, PhD
London Health Sciences Center
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 4
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- HEALTH SERVICES RESEARCH
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
January 2, 2024
First Posted
February 20, 2024
Study Start
April 16, 2024
Primary Completion
December 1, 2025
Study Completion
December 1, 2025
Last Updated
May 14, 2025
Record last verified: 2025-05
Data Sharing
- IPD Sharing
- Will not share