“… 5 , 6 , 9 Such a route has been used for the treatment of chronic pain conditions, 9 , 10 , 12 with some recent studies investigating the use of perioperative transdermal buprenorphine for the treatment of postoperative pain. 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 …”