Objective To reduce surgery trauma and achieve the effect of bladder outlet obstruction(BOO),we explored a novel animal model by hyaluronic acid periurethral injection and compared the obstructive effects and complications of this model with traditional open partial proximal urethral obstruction surgery.Methods A total of 40 Sprague-Dawley female rats were divided into 3 groups:15 rats were subcutaneously injected with0.2 mL hyaluronic acid at 5,7,12 o'clock of urethral orifice respectively,another 15 rats ...