Morbid Obesity and Total Knee Arthroplasty: A Growing Problem

Area of Science:

• Orthopedic Surgery
• Obesity Medicine
• Biomedical Engineering

Background:

• Obesity affects 35% of the US population, posing a significant challenge to healthcare systems.
• Rising obesity rates are projected to increase the demand for total knee arthroplasty (TKA).
• Existing data on TKA outcomes in obese patients present conflicting evidence regarding risks and benefits.

Purpose of the Study:

• To review and synthesize current data on total knee arthroplasty (TKA) in obese patients.
• To identify preoperative, intraoperative, and postoperative considerations specific to this patient population.
• To highlight areas for future research to improve TKA outcomes in individuals with obesity.

Main Methods:

• Comprehensive literature review of studies on TKA in obese patients.
• Analysis of medical and surgical complications, including preoperative optimization and intraoperative challenges.
• Evaluation of postoperative outcomes and implant-related issues.

Main Results:

• Preoperative optimization strategies include nutritional assessment and weight management, potentially including bariatric surgery.
• Intraoperative challenges involve achieving adequate exposure, ensuring proper implant alignment, and securing durable fixation.
• Postoperative complications encompass tibial loosening, wound healing issues, and increased risks of cardiovascular and respiratory events.

Conclusions:

• A thorough understanding of TKA-specific complications in obese patients is crucial.
• Addressing preoperative, intraoperative, and postoperative factors can mitigate risks and improve patient outcomes.
• Further research is needed to establish best practices for TKA in the growing obese population.