Cementless Triathlon 5YR Follow-Up

London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's

Status

Completed

Conditions

Knee Arthroplasty, Total

Radiostereometric Analysis

Knee Osteoarthritis

Treatments

Device: Cementless Total Knee Replacement

Study type

Observational

Funder types

Other

Identifiers

NCT05877261

12925

Details and patient eligibility

About

All artificial joint implants need to be solidly held (fixed) within the bone. Cementless fixation has become a popular method to achieve fixation for total knee replacements where the bone grows directly onto the implanted device instead of using bone cement. The primary purpose of this study is to assess long-term implant survivorship and clinical outcomes of a previous study cohort that received a cementless knee replacement. As this study cohort approaches 5 years post-operation, the investigators will re-examine the stability of participant implants using specialized x-rays, called "radiostereometric analysis". The study will use weight-bearing computed tomography (CT) to measure bone density and texture features and correlate that with implant stability. The investigators will collect stool samples to assess participant gut microbiomes for biomarkers of poor bone quality that could correlate to implant stability. All 33 participants from the original study cohort will be invited to participate in this study.

Enrollment

18 patients

Sex

All

Ages

21 to 90 years old

Volunteers

No Healthy Volunteers

Inclusion criteria