Does bariatric surgery reduce complications of knee replacement surgery?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Bariatric surgery performed before knee replacement can significantly reduce surgical complications, lower infection rates, and improve long-term outcomes for patients with obesity. Losing weight prior to knee arthroplasty decreases stress on the joint, shortens recovery time, and may even delay or eliminate the need for replacement surgery altogether.

If you're experiencing joint pain, mobility issues, or weight-related health concerns, understanding your symptoms early is key to making informed decisions about your care. A free, instant, online symptom check can help you identify possible causes, evaluate urgency, and guide your next steps—whether that means lifestyle changes, a specialist referral, or exploring surgical options. Take a few minutes today to gain clarity and take control of your health journey.

Reviewed for medical accuracy: 07/20/2026

Important Next Steps

Discover if knee pain needs care today Learn likely causes of post-surgery knee pain Find out if knee symptoms are serious See OTC relief for knee pain Find a doctor for knee complications Understand home remedies for knee pain Discover if bariatric surgery affects recovery

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Explanation

Bariatric surgery, which is a weight-loss surgery, can be beneficial for patients with obesity who are planning to have knee replacement surgery. Studies have shown that having bariatric surgery before knee replacement can lead to fewer complications during and after the knee surgery.

Reduced Complications: According to the research, patients who underwent bariatric surgery before their knee replacement had fewer medical complications compared to those who did not have the surgery. This includes a lower risk of infection and other surgical issues.
Improved Outcomes: Patients also experienced better overall outcomes, such as improved mobility and less pain after the knee replacement surgery.
Weight Loss Benefits: The weight loss achieved through bariatric surgery can reduce the stress on the knees, which is beneficial for recovery and long-term joint health.

Overall, for patients with obesity, considering bariatric surgery before knee replacement might improve their surgical experience and recovery. If you're experiencing knee pain or other symptoms and want to better understand your health, try Ubie's free AI-powered symptom checker to discuss personal health conditions with a healthcare provider and make the best decision.

(References)

Werner BC, Kurkis GM, Gwathmey FW, & Browne JA. (2015). Bariatric Surgery Prior to Total Knee Arthroplasty is .... The Journal of arthroplasty, 26071250.
Maman D, Eynhoren G, Ben-Zvi L, Steinfeld Y, Yonai Y, & Berkovich Y. (2025). Impact of Bariatric Surgery on Postoperative Outcomes .... Journal of clinical medicine, 40004718.
Ryan SP, Couch CG, Duong SQ, Taunton MJ, Lewallen DG, Berry DJ, & Abdel MP. (2022). Does Bariatric Surgery Prior to Primary Total Knee .... The Journal of arthroplasty, 35202755.

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