NCT04103515

Brief Summary

25 subjects implanted with a Zimmer-Biomet Posterior Cruciate Retaining (PCR) total knee arthroplasty (TKA) and 25 subjects implanted with a Zimmer-Biomet Posterior Stabilizing (PS) TKA will be asked to perform stepping up and deep knee bend activities while under fluoroscopic surveillance (x-ray video). The movements between the two different types of TKAs will be compared.

Trial Health

90
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
50

participants targeted

Target at P25-P50 for all trials

Timeline
Completed

Started Jan 2019

Geographic Reach
2 countries

3 active sites

Status
completed

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

Study Start

First participant enrolled

January 3, 2019

Completed
9 months until next milestone

First Submitted

Initial submission to the registry

September 23, 2019

Completed
2 days until next milestone

First Posted

Study publicly available on registry

September 25, 2019

Completed
1.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 6, 2020

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

November 6, 2020

Completed
11 months until next milestone

Results Posted

Study results publicly available

October 12, 2021

Completed
Last Updated

October 12, 2021

Status Verified

October 1, 2021

Enrollment Period

1.8 years

First QC Date

September 23, 2019

Results QC Date

May 10, 2021

Last Update Submit

October 11, 2021

Conditions

Outcome Measures

Primary Outcomes (4)

  • Lateral Condyle Kinematic Translations - Step up

    Lateral Condyle Kinematics Translations during stepping up activity. Data represents the motion of a specific part of the femur bone (in this case lateral femoral condyle) during the specified activity (in this case a step up). The kinematics (motion) is measured from the beginning of the activity to the end of the activity. Positive represents anterior motion of the femur, and negative represents posterior rollback of the femur. Data is only collected at a single time point and therefore refers to the motion of the femur bone during a specific activity at a single point in time.

    Baseline

  • Lateral Condyle Kinematics Translations - Deep Knee Bend

    Lateral Condyle Kinematics Translations during deep knee bend activity. Data represents the motion of a specific part of the femur bone (in this case lateral femoral condyle) during the specified activity (in this case a deep knee bend). The kinematics (motion) is measured from the beginning of the activity to the end of the activity. Positive represents anterior motion of the femur, and negative represents posterior rollback of the femur. Data is only collected at a single time point and therefore refers to the motion of the femur bone during a specific activity at a single point in time.

    Baseline

  • Medial Condyle Kinematics Translations - Step Up

    Medial Condyle Kinematics Translations during stepping up activity. Data represents the motion of a specific part of the femur bone (in this case medial femoral condyle) during the specified activity (in this case a step up). The kinematics (motion) is measured from the beginning of the activity to the end of the activity. Positive represents anterior motion of the femur, and negative represents posterior rollback of the femur. Data is only collected at a single time point and therefore refers to the motion of the femur bone during a specific activity at a single point in time.

    Baseline

  • Medial Condyle Kinematics Translations - Deep Knee Bend

    Medial Condyle Kinematics Translations during deep knee bend activity. Medial Condyle Kinematics Translations during stepping up activity. Data represents the motion of a specific part of the femur bone (in this case medial femoral condyle) during the specified activity (in this case a deep knee bend). The kinematics (motion) is measured from the beginning of the activity to the end of the activity. Positive represents anterior motion of the femur, and negative represents posterior rollback of the femur. Data is only collected at a single time point and therefore refers to the motion of the femur bone during a specific activity at a single point in time.

    Baseline

Study Arms (2)

Subjects implanted with PCR TKA

Subjects who have been implanted with a Zimmer-Biomet Posterior Cruciate Retaining total knee arthroplasty

Device: Zimmer-Biomet Posterior Cruciate Retaining total knee arthroplasty

Subjects implanted with PS TKA

Subjects who have been implanted with a Zimmer-Biomet Posterior Stabilizing total knee arthroplasty

Device: Zimmer-Biomet Posterior Stabilizing total knee arthroplasty

Interventions

Zimmer-Biomet Posterior Cruciate Retaining total knee arthroplasty

Subjects implanted with PCR TKA

Zimmer-Biomet Posterior Stabilizing total knee arthroplasty

Subjects implanted with PS TKA

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Patients implanted with a Zimmer-Biomet posterior cruciate retaining (PCR) or Zimmer-Biomet posterior stabilizing total knee arthroplasty (TKA)

You may qualify if:

  • Subjects will have a Zimmer Persona PCR or PS TKA.
  • Subjects must be at least six months post-operative.
  • Subjects will have KSS greater than 75.
  • Participants must be able to perform the required activities - stepping up and a deep knee bend.
  • Subjects must be willing to sign the Informed Consent (IC) / HIPAA form to participate in the study.
  • Bilateral subjects may be included in the subject population

You may not qualify if:

  • Pregnant, potentially pregnant or lactating females. To satisfy radiation protocol, each female subject will be asked if she is pregnant, or possibly could be pregnant. A pregnant person will not be allowed to participate in the study. To ensure this, a pregnancy test will be administered to any female participants of child bearing age who have not had a hysterectomy.
  • Subjects without the required type of knee implant.
  • Subjects who are unable to perform stepping up and deep knee bend.
  • Subjects who are unwilling to sign Informed Consent/HIPAA documents.
  • Subjects who do not speak English and/or French

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (3)

Rothman Institute

Bryn Mawr, Pennsylvania, 19010, United States

Location

University of Tennessee

Knoxville, Tennessee, 37996, United States

Location

The Institute for Locomotion, Aix-Marseille University, Hopital Sainte-Marguerite

Marseille, 13009, France

Location

MeSH Terms

Conditions

Osteoarthritis, Knee

Condition Hierarchy (Ancestors)

OsteoarthritisArthritisJoint DiseasesMusculoskeletal DiseasesRheumatic Diseases

Results Point of Contact

Title
Dr. Michael LaCour
Organization
University of Tennessee

Study Officials

  • Richard Komistek, PhD

    University of Tennessee

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
RETROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

September 23, 2019

First Posted

September 25, 2019

Study Start

January 3, 2019

Primary Completion

November 6, 2020

Study Completion

November 6, 2020

Last Updated

October 12, 2021

Results First Posted

October 12, 2021

Record last verified: 2021-10

Data Sharing

IPD Sharing
Will not share

Researchers would like to retain this study data in our secure database so as to continue to add relevant, current data to our digital collection to help us work with manufacturers in the future to create better implants that last longer and will not require revision surgery. Participants will be asked if their study data may remain a part of the University of Tennessee's Center for Musculoskeletal Research data collection for use in future studies in the IC. Identifiers are automatically removed from the database upon entry into the secure server. Data shared with sponsors is de-identified.

Locations