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Non-inflammatory Degenerative Joint DiseaseJourney UNINCT03442231

Journey™ UNI Post Market Clinical Follow-Up

An observational study of Non-inflammatory Degenerative Joint Disease, run by Smith & Nephew, Inc. at 4 sites in 2 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This is a retrospective/prospective, open-label single cohort, multicenter study to collect relevant clinical data from subjects with unicompartmental degeneration of the knee in whom the Journey UNI UKS was previously implanted. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
Journey UNI Unicompartmental Knee System
Type of treatment
Medical device
How many people
131 participants
Where
4 sitesin 2 countries
Study dates
11 Apr 2018to 25 Jan 2024
Phase
Observational
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: Investigators will pre-screen all subjects that have previously undergone UKA using the Journey UNI UKS system between 12 and 48 months previously using only the existing information in the medical records.

Who may be able to join

  • Between 12 and 48 months previously, subject had unicompartmental knee replacement implanted for unicompartmental, NIDJD including OA, traumatic arthritis, avascular necrosis, for correction of functional deformity, or to repair a fracture that was unmanageable using other techniques.
  • Subject received a JOURNEY UNI UKS implant (consisting of a femoral component, tibial baseplate, and a tibial insert).
  • Subject was considered skeletally mature at the time of surgery and was at least 18 years of age.
  • Subject is willing to have retrospective data collected and to participate in required prospective follow-up visit(s) at the investigational site and to complete study procedures and questionnaires.
  • Subject has consented to participate in the study by signing the Institutional Review Board (IRB)/Ethics Committee (EC)-approved informed consent form (ICF).

Who cannot join

  • Subject has Body Mass Index (BMI) > 40 within 1 month of surgery.
  • Subjects who have received the Journey UNI UKS as part of a revision surgery.
  • Subject has a condition that may interfere with the unicompartmental knee arthroplasty (UKA) survival or outcome (e.g. Paget's or Charcot's disease, vascular insufficiency, muscular atrophy, uncontrolled diabetes, moderate to severe renal insufficiency or neuromuscular disease).
  • Subject has a known allergy to study device or one or more of its components.
  • Subject, in the opinion of the Principal Investigator (PI), has an emotional or neurological condition that would preempt his/her ability or willingness to participate in the study including mental illness, mental retardation, drug or alcohol abuse.
  • Subject is entered in another investigational drug, biologic, or device study or has been treated with an investigational product in the past 30 days.
  • Subject is known to be at risk for loss to follow-up, or failure to return for scheduled visits.

Trial locations and contacts

4 sites in 2 countries.

4 sites in 2 countries

United States3 sites
  • Tennessee Orthopedic Alliance, P.A.

    Nashville, Tennessee, 37209

  • Illinois Bone and Joint Institute

    Park Ridge, Illinois, 60068

  • Orthopaedic Specialists of Central Arizona-Scottsdale

    Scottsdale, Arizona, 85255

Other trials in United States

Canada1 site
  • London Health Sciences Centre-University Hospital

    London, Ontario, N6A5A5

Other trials in Canada

About this study

Official title: Follow-Up of Subjects With a Journey™ UNI Unicompartmental Knee System Implant

This is a retrospective/prospective, open-label single cohort, multicenter study to collect relevant clinical data from subjects with unicompartmental degeneration of the knee in whom the Journey UNI UKS was previously implanted.

Read the detailed description

The purpose of the current investigation is to assess the safety and effectiveness of the JOURNEY UNI Unicompartmental Knee System (UKS) in patients with non-inflammatory degenerative joint disease (NIDJD) of the knee who previously had the Journey UNI UKS implanted. This clinical study will prospectively evaluate the 36 and 60-month safety and performance of the JOURNEY UNI UKS in patients with NIDJD of the knee who required lateral or medial knee compartment replacement.

Being tested
Journey UNI Unicompartmental Knee System
Keywords
osteoarthritis, traumatic arthritis, avascular necrosis
Medical subject headings
Osteoarthritis, Osteonecrosis

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Journey UNI Unicompartmental Knee SystemDevice

    Lateral or medial knee compartment replacement

Study groups in NCT03442231
Study groupRoleWhat they receive
Journey™ UNI Unicompartmental Knee SystemSubjects previously received knee replacement
Receives: Device: Journey UNI Unicompartmental Knee System

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Implant Survival

    Revision-free implant survival at 5 years was determined by the proportion of participant knees with device survival. Revision-free implant survival was measured by a Kaplan-Meier survival estimate with survival defined as the absence of implant failure by the 5-year time point.

    Measured: 5 years

Secondary outcomes (21)
  1. 2011 Knee Society Score (KSS): Objective Knee Score

    The 2011 Knee Society Score consists of 4 separate sub-scales. The "Objective" Knee Score is seven items with a range of 0 to 111, with a higher score indicating a better outcome.

    Measured: Baseline, 1 year, 3 years, 5 years

  2. 2011 Knee Society Score (KSS): Expectation Score

    The 2011 Knee Society Score consists of 4 separate sub-scales. The Patient Expectation Score was three items with a range of 3 to 15 where higher scores indicated a better outcome. The Expectation score indicated the patient's opinion on the extent they expect the operation to improve their knee pain, and ability to perform activities of daily living and recreational activities.

    Measured: Baseline, 1 year, 3 years, 5 years

  3. 2011 Knee Society Score (KSS): Satisfaction Knee Score

    The 2011 Knee Society Score consists of 4 separate sub-scales. The Patient Satisfaction Score is five items with a range of 0 to 40, with a higher score indicating a better outcome.

    Measured: Baseline, 1 year, 3 years, 5 years

  4. 2011 Knee Society Score (KSS): Functional Score

    The 2011 Knee Society Score consists of 4 separate sub-scales. The Functional Score is nineteen items with a range of 0 to 100, with a higher score indicating a better outcome. Functional Score is derived from assessments of walking and standing, standard activities, advanced activities, and discretionary activities.

    Measured: Baseline, 1 year, 3 years, 5 years

  5. Five-level EuroQol Five-dimensional (EQ-5D-5L): Index Score

    The EQ-5D-5L score consists of two parts: a descriptive system and a visual analogue scale (VAS). The Quality of Life index (i.e., index score) is used to describe the participant's health state and consists of five dimensions: mobility, self-care, usual activities, pain/discomfort and anxiety/depression. Each dimension has 5 levels to choose the most appropriate answer: no problems, slight problems, moderate problems, severe problems and extreme problems. The participant is asked to indicate their health state by marking the most appropriate statement in each of the five areas. The EQ-5D-5L Index Score was based on a US country code scale of -0.573 to 1, with higher index values indicating better health and lower index values indicating worse health.

    Measured: 1 year, 3 years, 5 years

  6. Five-level EuroQol Five-dimensional (EQ-5D-5L): Visual Analogue Scale (VAS) Score

    The EQ-5D-5L score consists of two parts: a descriptive system and a visual analogue scale (VAS). The VAS records the participant's self-rated health on a vertical visual analogue scale. The scale ranges from 0 to 100 where 0 indicates 'The worst health you can imagine' and 100 indicates 'The best health you can imagine'.

    Measured: 1 year, 3 years, 5 years

  7. Self-Administered Patient Satisfaction Survey (SAPSS): Surgery

    Self-Administered Patient Satisfaction Survey indicated the participants satisfaction with outcomes of joint replacement surgery across four domains of pain relief, home/yard work, recreational activities, and overall satisfaction by a response to a single question for each domain. Participants were categorized based on the question "How satisfied are you with the results of your surgery?" for the associated knee using one of the following responses:

    1. Very satisfied
    2. Somewhat satisfied
    3. Somewhat dissatisfied
    4. Very dissatisfied

    Measured: 1 year, 3 years, 5 years

  8. Self-Administered Patient Satisfaction Survey (SAPSS): Pain

    Self-Administered Patient Satisfaction Survey indicated the participants satisfaction with outcomes of joint replacement surgery across four domains of pain relief, home/yard work, recreational activities, and overall satisfaction by a response to a single question for each domain. Participants were categorized based on the question "How satisfied are you with the results of your surgery for improving your pain?" for the associated knee using one of the following responses:

    1. Very satisfied
    2. Somewhat satisfied
    3. Somewhat dissatisfied
    4. Very dissatisfied

    Measured: 1 year, 3 years, 5 years

  9. Self-Administered Patient Satisfaction Survey (SAPSS): Work

    Self-Administered Patient Satisfaction Survey indicated the participants satisfaction with outcomes of joint replacement surgery across four domains of pain relief, home/yard work, recreational activities, and overall satisfaction by a response to a single question for each domain. Participants were categorized based on the question "How satisfied are you with the results of surgery for improving your ability to do home or yard work?" for the associated knee using one of the following responses:

    1. Very satisfied
    2. Somewhat satisfied
    3. Somewhat dissatisfied
    4. Very dissatisfied

    Measured: 1 year, 3 years, 5 years

  10. Self-Administered Patient Satisfaction Survey (SAPSS): Recreational Activities

    Self-Administered Patient Satisfaction Survey indicated the participants satisfaction with outcomes of joint replacement surgery across four domains of pain relief, home/yard work, recreational activities, and overall satisfaction by a response to a single question for each domain. Participants were categorized based on the question "How satisfied are you with the results of surgery for improving your ability to do recreational activities?" for the associated knee using one of the following responses:

    1. Very satisfied
    2. Somewhat satisfied
    3. Somewhat dissatisfied
    4. Very dissatisfied

    Measured: 1 year, 3 years, 5 years

  11. Forgotten Joint Score (FJS)

    The Forgotten Joint Score (FJS) comprises measures for the assessment of joint-specific patient reported outcomes. Participants are asked to rate their awareness of their knee arthroplasty in 12 questions with a five point Likert response format: "Never", "almost never", "seldom", "sometimes" and "mostly". The item scores are summed and linearly transformed in a 0 to 100 scale with a high value reflecting the ability of the subject to forget about the replaced knee joint during the activities of daily living (i.e., a higher score is a better outcome).

    Measured: 1 year, 3 years, 5 years

  12. Radiographic Findings: Mechanical Alignment

    Perform weight-bearing antero-posterior (A/P) and lateral standard x-rays to determine the mechanical alignment in degrees.

    Measured: Baseline, 6 months

  13. Radiographic Findings: Implant Loosening

    Performed weight-bearing antero-posterior (A/P) and lateral standard x-rays to determine loosening of the implant (Yes/No).

    Measured: 1 year, 3 years, 5 years

  14. Radiographic Findings: Implant Subsidence/Migration

    Performed weight-bearing antero-posterior (A/P) and lateral standard x-rays to determine subsidence/migration of the implant (Yes/No).

    Measured: 1 year, 3 years, 5 years

  15. Radiographic Findings: Stress Shielding

    Performed weight-bearing antero-posterior (A/P) and lateral standard x-rays to determine presence of stress shielding (Yes/No).

    Measured: 1 year, 3 years, 5 years

  16. Radiographic Findings: Periprosthetic Fracture

    Performed weight-bearing antero-posterior (A/P) and lateral standard x-rays to determine periprosthetic fracture (Yes/No).

    Measured: 1 year, 3 years, 5 years

  17. Radiographic Findings: Wear of Articulating Surfaces of Replacement Components

    Performed weight-bearing antero-posterior (A/P) and lateral standard x-rays to determine wear of the articulating surfaces of replacement components (Yes/No).

    Measured: 1 year, 3 years, 5 years

  18. Radiographic Findings: Radiolucencies

    Performed weight-bearing antero-posterior (A/P) and lateral standard x-rays to determine if presence of radioloucencies were all negative (Yes/No). A 'Yes' response indicated no presence of radiolucent lines.

    Measured: 6 months, 1 year, 3 years, 5 years

  19. Radiographic Findings: Femoral Zone Radiolucencies

    Performed weight-bearing antero-posterior (A/P) and lateral standard x-rays to determine if presence of femoral zone radioloucencies were all negative (Yes/No). A 'Yes' response indicated no presence of radiolucent lines in the femoral zone of the knee.

    Measured: 6 months, 1 year, 3 years, 5 years

  20. Radiographic Findings: Anterior Medial-Lateral (ML) Zone Radiolucencies

    Performed weight-bearing antero-posterior (A/P) and lateral standard x-rays to determine if presence of anterior medial-lateral (ML) zone radioloucencies were all negative (Yes/No). A 'Yes' response indicated no presence of radiolucent lines in the anterior medial-lateral zone of the knee.

    Measured: 6 months, 1 year, 3 years, 5 years

  21. Radiographic Findings: Lateral Medial-Lateral (ML) Zone Radiolucencies

    Performed weight-bearing antero-posterior (A/P) and lateral standard x-rays to determine if presence of lateral medial-lateral (ML) zone radioloucencies were all negative (Yes/No). A 'Yes' response indicated no presence of radiolucent lines in the lateral medial-lateral zone of the knee.

    Measured: 6 months, 1 year, 3 years, 5 years

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted22 Feb 2018
  2. Study start11 Apr 2018
  3. Primary completion25 Jan 2024
  4. Study completion25 Jan 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Other
Enrolment
131 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03442231
Sponsor's protocol ID
17-4049-03
Acronym
Journey UNI
Status last verified
Feb 2024
First submitted
16 Feb 2018
Last updated
2 Nov 2026
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

An observational study of Non-inflammatory Degenerative Joint Disease, run by Smith & Nephew, Inc. at 4 sites in 2 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 2 Nov 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 4 sites in United States, Canada. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Yes. Results are posted in the registry (first posted 2 Nov 2026). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Implant Survival (time frame: 5 years). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 2 Nov 2026.

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