Twenty patients with Atzei type 2 or 3 TFCC injuries undergoing wrist arthroscopy were randomized to receive either a mixture of 1% ropivacaine and 0.7% compound betamethasone (test group, n=10) or normal saline (control group, n=10). The primary outcome was the reduction in postoperative pain assessed by the Visual Analog Scale (VAS) at various intervals. Secondary outcomes included pinch force, satisfaction with analgesia, analgesic consumption, wrist joint mobility, and adverse events. Outcomes were evaluated up to 72 hours postoperatively and again at one year. Overall, the test group demonstrated significantly lower pain scores at 12, 24, and 48 hours (p<0.05), greater pinch force (p<0.01), and reduced analgesic consumption (p<0.01). No adverse events were reported. These findings suggest that the mixture provides effective early pain control and improves short-term recovery without additional risks.