ROSA Robot Used in Total Knee Replacement Post Market Study
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The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT03969654 |
Recruitment Status :
Active, not recruiting
First Posted : May 31, 2019
Last Update Posted : July 16, 2021
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Knee Pain Chronic Osteoarthritis Avascular Necrosis of the Femoral Condyle Moderate Varus, Valgus or Flexion Deformities Rheumatoid Arthritis | Device: PERSONA Total Knee Device: Vanguard Total Knee Device: NexGen Total Knee | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 256 participants |
Allocation: | Non-Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | ROSA Total Knee Post Market Study: Prospective Multicenter U.S. Study of the ROSA Total Knee System |
Actual Study Start Date : | May 1, 2020 |
Estimated Primary Completion Date : | December 31, 2022 |
Estimated Study Completion Date : | December 31, 2023 |

Arm | Intervention/treatment |
---|---|
Active Comparator: Robotic Assisted TKA
Robotic Assisted TKA
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Device: PERSONA Total Knee
Primary Total Knee Arthroplasty Device: Vanguard Total Knee Primary Total Knee Arthroplasty Device: NexGen Total Knee Primary Total Knee Arthroplasty |
Active Comparator: Conventional TKA
Conventional TKA
|
Device: PERSONA Total Knee
Primary Total Knee Arthroplasty Device: Vanguard Total Knee Primary Total Knee Arthroplasty Device: NexGen Total Knee Primary Total Knee Arthroplasty |
- Clinical Performance [ Time Frame: 1 year ]
EQ-5D Questionnaire: A questionnaire completed by the Patient and assesses his/her General health Status. The EQ5D is used to derive a Quality of life index used for health economics considerations.
Oxford Knee Score: The Oxford Knee Score is a patient completed 12 question metric to rate a patient's knee pain and function using an ordinal 0 - 4 point scale. The total score is obtained by calculating the sum of the 12 items. The minimum score is 0 and the maximum score is 48 points.
- Workflow Efficiency [ Time Frame: 1 year ]
Intraoperative questionnaire detailing surgical and OR efficiencies.
- Operative Time
- Tourniquet Time
- Personnel involved/present in OR
- Knee Alignment Values

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
- Patient is a minimum of 18 years of age
- Independent of study participation, patient is a candidate for commercially available Persona, NexGen, and Vanguard knee components implanted in accordance with product labeling
- Patient has participated in this study-related Informed Consent process
- Patient is willing and able to provide written Informed Consent by signing and dating the IRB or EC approved Informed Consent form
- Patient is willing and able to complete scheduled study procedures and follow-up evaluations
Exclusion Criteria:
- Patient is currently participating in any other surgical intervention studies or pain management studies
- Patient has underwent contralateral UKA or TKA within the last 18 months
- Hip pathology with significant bone loss (e.g. avascular necrosis of the femoral head with collapse, severe dysplasia of the femoral head or the acetabulum)
- Hip pathology severely limiting range of motion (e.g. arthrodesis, severe contracture, chronic severe dislocation)
- Patient is pregnant or considered a member of a protected population (e.g., prisoner, mentally incompetent, etc.)
- Patient has previously received partial or total knee arthroplasty for the ipsilateral knee

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03969654
United States, Colorado | |
Vail-Summit Orthopaedics | |
Vail, Colorado, United States, 81657 | |
Cornerstone Orthopedics & Sports Medicine, a division of Orthopedic Centers of Colorado, LLC | |
Westminster, Colorado, United States, 80023 | |
United States, Illinois | |
SIU School of Medicine | |
Springfield, Illinois, United States, 62702 | |
United States, Michigan | |
Henry Ford Health System | |
Detroit, Michigan, United States, 48202 | |
United States, Virginia | |
OrthoVirginia Chippenham | |
North Chesterfield, Virginia, United States, 23225 |
Study Director: | Kacy Arnold | Zimmer Biomet |
Responsible Party: | Zimmer Biomet |
ClinicalTrials.gov Identifier: | NCT03969654 |
Other Study ID Numbers: |
CMU2018-34K |
First Posted: | May 31, 2019 Key Record Dates |
Last Update Posted: | July 16, 2021 |
Last Verified: | July 2021 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | Yes |
Necrosis Pathologic Processes |