Changes in Coronal Plane Parameters Don't Affect Patient-Reported Outcomes at First Year Postoperatively in Total...

This study was planned to reveal the relationship between coronal alignment parameters and patient-reported outcome measure (PROM) in the first year postoperatively after total knee arthroplasty (TKA).TKA for knee osteoarthritis between February 2019 and March 2023 were identified as potential candidates for the study. Patients who underwent TKA between February 2019 and March 2023 were retrospectively scanned. The exclusion criteria included ipsilateral total hip arthroplasty, history of surgery around the knee, preoperative tibial or femoral fracture, osteoarthritis due to rheumatic or traumatic causes, osteoarthritis due to valgus malalignment, bilateral TKA, and long-leg standing X-rays not taken with the appropriate acquisition technique. All patients were measured on full weight-bearing long leg X-rays taken 1 day before preoperatively and 1 year postoperatively. Hip and knee angle (HKA), lateral distal femoral angle (LDFA), and medial proximal tibial angle (MPTA) were measured in all patients. Preoperative and 1-year post-operative measurements were obtained for all patients. The relationship between changes in radiographic measurements and the Knee Injury and Osteoarthritis Outcome Score (KOOS), Visual Analog Score (VAS), and Oxford Knee Score was statistically evaluated.About 153 patients were included in the study. A total of 137 (89.5%) of these patients were female, and 16 (10.5%) were male. The mean age of the patients was 66.7 ± 5.12 years. Statistically significant improvement was found in all clinical scores in the postoperative period. A statistically significant negative correlation was found between preoperative HKA and preoperative Oxford score. The analysis of the relationship between changes in radiologic parameters and changes in clinical scores revealed no statistically significant correlation.Thus, there is no relationship between coronal plane parameters and postoperative first-year PROM in TKA patients.