Evaluating the GEMINI SL Knee Prosthesis for Osteoarthrosis

Clinical and Functional Outcome of the GEMINI SL Fixed Bearing PS Knee Prosthesis in Short-, Mid-, and Longterm Follow-up

Observational Waldemar Link GmbH & Co. KG · NCT04858347

This study is testing how well the GEMINI SL knee prosthesis works and stays safe for people with osteoarthrosis over a 10-year period.

Quick facts

Study typeObservational
Enrollment350 (estimated)
Ages18 Years to 80 Years
SexAll
SponsorWaldemar Link GmbH & Co. KG Industry-sponsored
Locations1 site (Cali, Valle del Cauca Department)
Trial IDNCT04858347 on ClinicalTrials.gov

What this trial studies

This observational study aims to assess the long-term safety and performance of the GEMINI SL Fixed Bearing PS knee prosthesis over a planned follow-up period of 10 years. It will involve multiple centers and focus on the 10-year survival rate of the prosthesis, with revision for any reason as the primary endpoint. The study seeks to generate clinical data under routine conditions, as there is currently a lack of mid- and long-term data for this specific knee prosthesis.

Who should consider this trial

Good fit: Ideal candidates for this study are individuals aged 18 to 80 who require a total knee replacement and are undergoing implantation of the GEMINI SL Fixed Bearing PS knee prosthesis.

Not a fit: Patients with a BMI over 40 kg/m², significant comorbidities affecting outcomes, or those who are mentally unable to understand the study will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide valuable insights into the long-term effectiveness and safety of the GEMINI SL knee prosthesis for patients with knee osteoarthrosis.

How similar studies have performed: While this study is focused on a specific prosthesis, similar observational studies have successfully provided long-term data on knee replacements, indicating potential for valuable insights.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Signed patient informed consent
* Implantation of a GEMINI SL Fixed Bearing PS knee prosthesis
* Age between 18 and 80 years

Exclusion Criteria:

* Body Mass Index (BMI) \> 40 kg/m²
* Foreseeable life expectancy under 5 years
* Comorbidities and known medical circumstances which would affect the clinical or functional outcome after implantation of the knee prosthesis (e.g. neurological or musculoskeletal diseases) at the time of implantation
* Patient who is mentally not able to understand the study and the study conduct
* Patients who will be foreseeable non-compliant to the planned routine interventions and study related follow-ups
* Prisoner
* Pregnant women

Where this trial is running

Cali, Valle del Cauca Department

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Osteoarthrosis of Knee
Last reviewed 2026-06-09 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.