Defining the relationship between obesity and total joint arthroplasty

Area of Science:

• Orthopedic Surgery
• Rehabilitative Medicine
• Obesity Research

Background:

• Patient-reported outcomes are crucial for evaluating total joint arthroplasty effectiveness.
• The impact of obesity on these outcomes requires further investigation.

Purpose of the Study:

• To investigate the association between obesity and patient-administered outcome measures following total joint arthroplasty.
• To compare outcomes between obese and non-obese patients undergoing hip and knee replacements.

Main Methods:

• A registry-based study analyzed data from 592 total hip arthroplasty and 1011 total knee arthroplasty patients.
• Logistic regression examined the relationship between body mass index and various patient-reported outcome measures at 1-year follow-up.

Main Results:

• No significant differences were found in patient satisfaction, willingness to repeat surgery, or changes in Short Form-36 and Western Ontario and McMaster Universities Osteoarthritis Index scores between obese and non-obese groups.
• Obesity was associated with an increased risk of difficulty with stair negotiation at 1 year.

Conclusions:

• Obesity does not diminish the overall satisfaction or functional gains achieved through total joint arthroplasty.
• While general outcomes are comparable, specific functional challenges like stair climbing may be more prevalent in obese patients post-arthroplasty.