Background: Synovitis of the shoulder causes pain; however. it is difficult to accurately determine the area and degree of synovitis from preoperative images. This study investigated the correlation between intraoperative arthroscopic findings and preoperative power Doppler ultrasonography (PDUS) findings for synovitis evaluation. Methods: Forty patients (mean age = 62. https://homehardware4ues.shop/product-category/fasteners/