Clinical trial Recruiting at 1 site Interventional Ages 18 to 75

Comparison of two knee implant designs for total knee replacement

Official title: Prospective Functional, Gait, and Outcome Comparison Study of Medial Pivot

Run by LifeBridge Health · NCT04814082 · Data updated 2026-11-12

This study is testing which of two different knee implant designs helps people who have knee replacement surgery feel better and be more satisfied afterward.

Quick facts

Study typeInterventional
Ages18 Years to 75 Years
SexAll
Enrollment100 (estimated)
SponsorLifeBridge Health
Academic / other
Locations1 site (Baltimore, Maryland)
StatusRecruiting
StartedFebruary 1, 2021
Main results expectedJuly 1, 2030
Study endsJuly 1, 2030
Registry record updatedJanuary 22, 2025
Trial IDNCT04814082 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are males or non-pregnant females aged 18 to 75 who require a primary total knee arthroplasty and meet specific health criteria.

Probably not a fit

Patients with a BMI over 40 or those with a history of previous knee prosthetic replacement will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study compares the clinical outcomes and patient satisfaction between two types of knee implant designs used in total knee arthroplasty: the medial pivot design and the single radius design. It involves 100 adult participants who will undergo primary total knee replacement and will be assessed through various methods, including clinical evaluations and specialized gait analysis. The study aims to determine which implant design may lead to better functional outcomes and overall satisfaction post-surgery.

Why it matters

Potential benefit: If successful, this study could lead to improved surgical outcomes and patient satisfaction for those undergoing total knee replacement.

How similar studies have gone: While there is limited direct research comparing these two designs, the study addresses a significant gap in existing literature and aims to provide valuable insights.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Subject is male or non-pregnant female aged between 18 and 75 years of age.
* Subject is willing to provide informed consent to participate in the research study.
* Subject is indicated for a primary total knee arthroplasty (TKA) based on the approved labeling of knee implant, either a medial pivot or single radius design, specifically: MicroPort Evolution Medial-Pivot Knee System, Cruciate Retaining (CS) or Stryker Triathlon Tritanium (CS)
* Subject does not have a history of previous prosthetic replacement device on the operative knee.
* Subject is currently ambulating and does not have a condition on the contralateral limb in the opinion of the investigator that would interfere with the gait laboratory evaluations.
* Subject is willing and able to comply with the schedule of events for the study and is available to return to the clinic for all required follow-up visits.

Exclusion Criteria:

* Subject has a Body Mass Index (BMI) \>40
* Subject has a diagnosis of avascular necrosis or inflammatory arthritis.
* Subject has any mental or neuromuscular disorder that would create an unacceptable risk of prosthesis instability, prosthesis fixation failure, or complications in postoperative care.
* Subject is a prisoner
* Subject has any condition, in the opinion of the Investigator that might interfere with the evaluation of the study objectives.

Where it's running

  • Sinai Hospital of Baltimore
    Baltimore, Maryland, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.