Does bariatric surgery prior to lower limb joint replacement reduce complications?

Area of Science:

• Orthopedic Surgery
• Bariatric Surgery
• Public Health

Background:

• Obesity is a growing global health issue, often necessitating bariatric surgery for super-obese individuals.
• Many patients undergoing bariatric surgery also require lower limb arthroplasty (hip or knee replacement).
• The optimal timing of these procedures is crucial for managing patient outcomes.

Purpose of the Study:

• To investigate complications associated with hip and knee replacement in patients who have undergone bariatric surgery.
• To compare complication rates based on the sequence of bariatric surgery and joint replacement.
• To evaluate outcomes against the general English arthroplasty patient population.

Main Methods:

• Analysis of Hospital Episode Statistics data for English NHS patients from 2005-2009.
• Inclusion criteria: patients undergoing both lower limb arthroplasty and bariatric surgery.
• Comparison of joint replacement-specific and general medical complications between groups: arthroplasty-first, bariatric-first, and general arthroplasty patients.

Main Results:

• A total of 143 patients underwent both procedures; 53 had bariatric surgery first, 90 had arthroplasty first.
• Obese patients were younger on average (9 years) than the general arthroplasty population, with similar in-hospital stays.
• While general medical complications were lower in obese patients, hip dislocation rates were higher. Crucially, wound infection rates were 3.5 times lower and 30-day readmissions 7 times lower when bariatric surgery preceded joint replacement (p=0.06).

Conclusions:

• Performing bariatric surgery prior to lower limb arthroplasty in super-obese patients is associated with a reduced risk of complications.
• This sequence may lead to better outcomes, including lower infection and readmission rates.
• Further research may confirm the significant benefits of staged bariatric surgery followed by joint replacement.