Postoperative BMI Changes and Functional Outcomes in Knee and Hip Arthroplasty

The Effect of Changes in Body Mass Index After Total Knee and Hip Arthroplasty on Patient Functional Scores

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT06440863

Enrollment

459

Registered

2024-06-04

Start date

2018-01-01

Completion date

2024-05-01

Last updated

2024-06-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Arthropathy, Obesity

Keywords

Total Hip Arthroplasty, Total Knee Arthroplasty, Weight Loss, Obesity, Body Mass Index

Brief summary

PURPOSE Obesity poses challenges to preoperative mobility and functional recovery for arthroplasty patients, yet postoperative weight loss remains elusive. This study aims to investigate postoperative weight changes and their impact on functional scores following knee and hip arthroplasty, exploring factors influencing these changes. METHODS A total of 459 knee and hip arthroplasty cases with a 2-year follow-up were analyzed. BMI and Oxford scores were tracked, alongside factors including comorbidities, corticosteroid use, physiotherapy, and unilateral vs. bilateral surgery. EXPECTED OUTCOMES Based on the study's design and the data available, we anticipate observing the impact of changes in patients' BMI on clinical scores as an independent variable. Additionally, we aim to elucidate the effects of comorbidities, corticosteroid use, physiatrist follow-up, and the type of surgical procedure on both BMI and clinical outcomes. Through this analysis, we expect to gain a comprehensive understanding of how these factors interplay to influence postoperative recovery and overall patient health.

Interventions

PROCEDURETotal Knee Arthroplasty

Patients undergoing total knee arthroplasty

PROCEDURETotal Hip arthroplasty

Patients undergoing total hip arthroplasty

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

20 Years to 80 Years

Healthy volunteers

Inclusion criteria

* Patients who underwent primary TKA and THA with a 2-year follow-up were included

Exclusion criteria

* Patients who underwent bariatric surgery before or after the surgery * Incomplete 2-year follow-up * Whom BMI or Oxford scores could not be accessed

Design outcomes

Primary

Measure	Time frame	Description
BMI	2 years	Body Mass Index (BMI) is a person's weight in kilograms divided by the square of height in meters.
Oxford hip and knee scores	2 years	It is scored between 0 and 48. 48 is the best function.

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026