Using ROSA for Challenging The TKA Standard of Care

What this study is about

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.

Who can join (things the study team will check)

✅ You may be able to join 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 be able to join 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

Where this trial is running

• University Hospital, London, Ontario, Canada

Who to contact

Lyndsay Somerville, PhD · (519) 685-8500 · lyndsay.somerville@lhsc.on.ca

It's completely normal to call and ask questions before deciding anything. Mention the study ID: NCT06267482.