Abstract:Objective To analyze the clinical efficacy of the radial forearm flap (RFF) and the anterolateral thigh flap (ALT) in reconstructing postoperative defects of the soft palate cancer, and to compare the differences in surgical repair outcomes, postoperative functional recovery, and long-term prognosis between the two flaps, so as to provide a reference for the formulation of individualized repair plans for postoperative defects of soft palate cancer in clinical practice. Methods This study adopted a retrospective analysis method. The clinical data of 25 patients with soft palate cancer who were treated at the Second Affiliated Hospital of Fujian Medical University from November 2017 to June 2025 were collected. Among them, 13 patients received repair with the RFF (RFF group), and 12 patients received repair with the ALT (ALT group). The intraoperative relevant parameters of the two flaps were compared, including flap area, vascular pedicle length, and flap preparation time. The occurrence of postoperative complications (such as flap necrosis, pharyngeal fistula, bleeding, etc.) was observed. The recovery of postoperative swallowing, speech, and nasopharyngeal reflux was evaluated, and the differences in tumor recurrence rate and overall survival rate between the two groups were compared. Results The survival rates of the two groups were both relatively high, and the difference was statistically insignificant (P=0.740). The flap area of the RFF group was significantly smaller than that of the ALT group, and the difference was statistically significant (P=0.003). The preparation time of the RFF group was longer than that of the ALT group, and the difference was statistically significant (P=0.042). There were 3 cases of complications in the RFF group and 2 in the ALT group after surgery, and the difference between the two groups was statistically insignificant (P=0.541). The functional assessment results showed that the postoperative speech, swallowing functions, and nasopharyngeal reflux of the two groups recovered well, and there were no statistically significant differences in various functional indicators (all P>0.05). However, compared with the ALT group, the speech and swallowing functions of patients in the RFF group recovered more advantageously, and the risk of nasopharyngeal reflux in the RFF group was higher than that in the ALT group. There were no statistically significant differences in the incidence of postoperative complications and overall survival rate between the two groups (all P>0.05), and the tumor recurrence rate and distant metastasis risk of the ALT group were higher. Conclusions Both the RFF and ALT flaps can effectively reconstruct postoperative defects of soft palate cancer and can well restore the postoperative swallowing and speech functions of patients. The clinical efficacy and long-term prognosis of both are overall reliable. In clinical practice, individualized flap repair plans can be selected based on the size of the soft palate defect, the duration of the surgery, and the individual basic conditions of the patients.