Weight loss surgery before knee replacement for obese patients

Optimal Management of Extreme Obesity and Severe Knee Osteoarthritis Feasibility Trial

Not applicable Interventional Nova Scotia Health Authority · NCT05120492

This study tests if having weight loss surgery before knee replacement helps obese patients with severe knee arthritis recover better and have fewer problems after surgery.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment20 (estimated)
Ages18 Years to 65 Years
SexAll
SponsorNova Scotia Health Authority Academic / other
Locations1 site (Halifax, Nova Scotia)
Trial IDNCT05120492 on ClinicalTrials.gov

What this trial studies

This trial investigates whether undergoing weight loss surgery prior to total knee replacement improves surgical outcomes for patients with severe knee osteoarthritis and a body mass index (BMI) between 45 and 60. Participants are randomly assigned to either receive dietary and lifestyle counseling followed by knee replacement or to undergo sleeve gastrectomy followed by the same knee replacement procedure. The study aims to assess the feasibility and effectiveness of this approach over a period of 9 to 13 months.

Who should consider this trial

Good fit: Ideal candidates are individuals with severe knee osteoarthritis and a BMI between 45 and 60.

Not a fit: Patients who have previously undergone knee replacement surgery or have significant comorbidities may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could lead to improved recovery and outcomes for patients undergoing knee replacement surgery.

How similar studies have performed: While this approach is innovative, similar studies have shown promising results in improving outcomes for obese patients undergoing orthopedic surgeries.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

severe knee osteoarthritis body-mass index of 45 to 60

Exclusion Criteria:

previous total replacement of the same knee, a need for bilateral total knee replacement, and knee pain during the previous week that the patient rated at higher than 60 mm on a 100-mm visual-analogue scale. Also,prior bariatric or complex foregut surgery, significant cardiovascular, pulmonary, renal, liver, gastrointestinal, psychiatric disorders, pregnancy, malignancy within last 5 years, anemia, coagulopathy requiring anti-coagulation therapy.

Where this trial is running

Halifax, Nova Scotia

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 Knee OsteoarthritisMorbid ObesityArthroplasty, Replacement, KneeBariatric Surgery
Last reviewed 2026-06-13 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.