Bariatric surgery, osteoarthritis and arthroplasty of the hip and knee in Swedish Obese Subjects – up to 31 years follow-up of a controlled intervention study

Bariatric surgery may reduce the incidence of hip osteoarthritis but is associated with a higher incidence of knee arthroplasty.

• The incidence rate of hip osteoarthritis was lower in the surgery group (5.3) compared to controls (6.6).
• There was no significant difference in the incidence of hip arthroplasty between the surgery group and controls.
• Knee osteoarthritis incidence was similar in both the surgery group and controls.
• The surgery group had a higher incidence of knee arthroplasty (7.4) compared to the control group (5.6).
• The reference cohort exhibited lower incidences of osteoarthritis and arthroplasty for both hip and knee compared to the surgery and control groups.

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