X-ray measurement of periarticular soft tissue predict readmission complications after Total Knee Arthroplasty

Abstract： Purpose: Obesity is widely recognized as one of the risk factors for osteoarthritis. This study aims to explore the association between BMI and periarticular soft tissue on readmission complications in patients with previous joint replacement through the study of clinical and imaging data. Methods: This retrospective study summarized 625 patients who underwent total knee arthroplasty . Imaging measurement data included several measurable soft tissue values and ratios on the anteroposterior. The association between BMI and imaging soft tissue measurement data with complications leading to readmission during follow-up was explored. Results: Analyzing 761 preoperative imaging measurements and postoperative follow-up data, a significant correlation (P<0.05) emerged between postoperative readmission complications and measured soft tissue thickness around the joint. A 1:4 paired test affirmed the independent predictive power (P<0.1) of select soft tissue data for readmission complications. Conclusion: BMI proved insufficient in evaluating obesity-related complications post total knee arthroplasty. Preoperative imaging soft tissue data exhibited superior predictive capability for anticipating readmission complications after arthroplasty.