Risk of Revision Following Knee Arthroplasty in Bariatric Surgery Patients

Risk of Revision and Other Complications Following Knee Arthroplasty in Patients Previously Exposed to Bariatric Surgeries: A Nationwide, Register-based Study

Previous studies have investigated the outcomes of Knee Arthroplasty (KA) following Bariatric Surgery (BAS), but with substantial limitations as not stratifying for Body Mass Index (BMI) at time of KA or not addressing the type of BAS (gastric bypass, banding or sleeve). Since BMI varies greatly in patients with previous BAS, it is likely that BMI affects outcomes after KA in BAS-operated patients.

The investigators believe that stratifying for BMI would explain the contradictions with the previous research in this patient group when it comes to the risk of revision after KA.

Inclusion Criteria:

• Primary knee arthroplasty due to osteoarthritis

Exclusion Criteria:

• Primary knee arthroplasty due to traumatic osteoarthritis.