A study of clinical outcomes and its associated factors after total knee arthroplastyr total knee arthroplasty

Abstract

This study is a retrospective descriptive research project examining clinical outcomes and associated factors following total knee replacement surgery. Data were collected from the medical records of patients who underwent elective total knee replacement at Ramathibodi Chakri Naruebodindra Hospital, along with electronic medical records, from January 1, 2020, to December 31, 2021. A total of 154 patients were included. Data were collected by recording forms, including personal data and adverse clinical outcomes. The data were analyzed using descriptive statistics and logistic regression analysis. The results revealed that most patients experienced mild or no pain both before and after surgery, with no reported infections or complications. Additionally, postoperative knee flexion improved significantly, increasing preoperatively to more than 100 degrees within 12 weeks after surgery. The average length of hospital stay was no more than five days. The adverse clinical outcomes after total knee arthroplasty at 12 weeks showed that age and body mass index significantly predicted the occurrence of knee flexion stiffness at 12 weeks, including increasing age (OR=0.944, 95% CI=.897-.993), increasing body mass index (OR=0.927, 95% CI=.864 -.996), and increasing body mass index was found to increase the risk of knee extension stiffness 1.115 times (OR=1.115, 95% CI=1.034-1.201). The findings of this study can guide hospitals in surgical planning and the development of care protocols to reduce adverse clinical outcomes in patients undergoing total knee replacement, ultimately enhancing patient safety.