Full Terms & Conditions of access and use can be found at https://www.tandfonline.com/action/journalInformation?journalCode=icmo20 Current Medical Research and Opinion ISSN: 0300-7995 (Print) 1473-4877 (Online) Journal homepage: https://www.tandfonline.com/loi/icmo20 Efficacy and safety of tapentadol prolonged release formulation in the treatment of elderly patients with moderate-to-severe chronic osteoarthritis knee pain: a pooled analysis of two double-blind, randomized, placebo-, and active- controlled trials Bernd Lange, Melanie Sohns, José Tempero & Christian Elling To cite this article: Bernd Lange, Melanie Sohns, José Tempero & Christian Elling (2018) Efficacy and safety of tapentadol prolonged release formulation in the treatment of elderly patients with moderate-to-severe chronic osteoarthritis knee pain: a pooled analysis of two double-blind, randomized, placebo-, and active-controlled trials, Current Medical Research and Opinion, 34:12, 2113-2123, DOI: 10.1080/03007995.2018.1520085 To link to this article: https://doi.org/10.1080/03007995.2018.1520085 View supplementary material Accepted author version posted online: 11 Sep 2018. Published online: 17 Sep 2018. Submit your article to this journal Article views: 954 View related articles View Crossmark data Citing articles: 5 View citing articles