BackgroundContinuous interscalene block has been known to improve postoperative analgesia after arthroscopic shoulder surgery. This was a prospective study investigating the ultrasound-guided posterior approach for placement of an interscalene catheter. clinical efficacy and complications after placement of the catheter. MethodsForty-two patients undergoing elective arthroscopic shoul... https://www.foldlyers.shop/product-category/hook/