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NCT Number: NCT03495232

Persona Cohort Nordic Multicenter Study

In this project the investigators wish to:

Evaluate intra-operative and postop complications, longer term survivorship and patient reported outcome measures (PROMs) following primary total knee replacement using Persona Total Knee system.

This project is carried out as prospective cohort study. Recruitment of participants to this project is expected to begin in October 2016 or as soon as permission from the Regional Ethics Committee and the local Data Protection Agency is obtained as required. A total of 700 participants (including 155 participants from a randomized controlled trial (RCT) investigating the Persona and the Nexgen total knee systems, which is separately submitted to the ethics committee) are to be included at several centers in the nordic region. Recruitment is expected complete after a period of 1,5 years per site. The patient follow-up visits are expected to be completed 2 years after recruitment of the last participant. Survivorship will be collected until 10 years after the recruitment of the last participant.

Participants are seen on an outpatient basis at 3 months and 1 and 2 years postoperatively.

After the 2 year follow-up visit the patients recruited in the Scandinavian sites will be followed for survivorship through the National Knee Arthroplasty Registries at 5, 7 and 10 years postoperatively. Since France does not have a national registry, the French site will also perform 5 year follow-up visits.

Active, Not Recruiting

This study is active but is not currently recruiting participants.

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Key information

Conditions

Knee Arthropathy Arthritis Joint Diseases Musculoskeletal Diseases Osteoarthritis Rheumatic Diseases

Sex eligibility

All sexes

Study type

Observational

Primary location

Copenhagen University Hospital, Hvidovre, Copenhagen, Denmark

Loading trial locations.

About this study

The investigators will retain the subject data sources, case report forms (CRFs) and electronic-CRFs in accordance with local laws and regulations.

The enrollment is competitive between the participating centers. Project information and consent according to local requirements before surgery is completed.

Surgery is performed as described in the manufacturer's surgical technique. A senior surgeon dedicated to total knee arthroplasty surgery will perform all operations with an assistant.

Participants will receive standard pain treatment and rehabilitation until discharge.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Clinical and radiological osteoarthritis of the knee set to receive a primary unilateral total knee replacement

Exclusion criteria

  • Patients who are unwilling or unable to give consent, or to comply with the follow-up program.
  • Patients that meet any contraindications listed in the Instruction for Use

Treatment and study plan

Zimmer Biomet Persona total knee system

Device

Product manufactured by Zimmer Biomet used to replace the knee joint.

Primary outcomes

  1. Evaluate patient reported outcome measures following primary total knee replacement using Persona Total Knee system

    Time frame: 2 years

    Evaluate patient reported outcome measures following primary total knee replacement using Persona Total Knee system as measured by Oxford knee score (OKS); a 12-item patient-reported Patient Reported Outcomes specifically designed and developed to assess function and pain after total knee replacement surgery. Score ranging from 0 (most severe symptoms/problems) to 48 (least severe).

Secondary outcomes

  1. Evaluate patient reported physical activity level following primary total knee replacement using Persona Total Knee system. An 8-item patient-reported outcome. Score ranging from 0 (most severe symptoms/problems) to 32 (least severe).

    Time frame: 2 years

    Oxford knee score Activity & Participation Questionnaire (OKS, APQ)

  2. Evaluate patient quality of life following primary total knee replacement using Persona Total Knee system

    Time frame: 2 years

    EuroQol Group (EQ5D) standardized measure of health status. Measured in terms of five dimensions (5D); mobility, self-care, usual activities, pain/discomfort, and anxiety/depression. Overall health status rated by the patient using the visual analogue scale (EQ-VAS).

  3. Evaluate patient satisfaction following primary total knee replacement using Persona Total Knee system

    Time frame: 2 years

    Anchoring questions. Focusing on Patient perception of their knee and their satisfaction with the knee after their knee surgery

  4. Evaluate patient reported awareness of their knee following primary total knee replacement using Persona Total Knee system

    Time frame: 2 years

    Forgotten Joint Score (FJS)

  5. Evaluate intraoperative and postoperative complications

    Time frame: 10 years

    Register adverse events including intraoperative complications and revisions at any postoperative time point.

  6. Evaluate implant positioning following primary total knee replacement using Persona Total Knee system

    Time frame: 2 years

    Measure radiolucency and osteolysis using conventional radiographs in anterior posterior (AP) and lateral views.

  7. Evaluate longer term survivorship following primary total knee replacement using Persona Total Knee system

    Time frame: 10 years

    Survival of the implant through registries

Sponsors and collaborators

Lead sponsor

Zimmer Biomet

Industry

Registry information

Official study title

A Multicenter Prospective Cohort Study on Persona Total Knee System

Important dates

Study start
2016
Primary completion
2029
Study completion
2032
First posted
Apr 11, 2018
Registry last updated
Dec 18, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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