Comment on

• The effect of wound instillation of a novel purified capsaicin formulation on postherniotomy pain: a double-blind, randomized, placebo-controlled study.

  Aasvang EK, Hansen JB, Malmstrøm J, Asmussen T, Gennevois D, Struys MM, Kehlet H. Aasvang EK, et al. Anesth Analg. 2008 Jul;107(1):282-91. doi: 10.1213/ane.0b013e31816b94c9. Anesth Analg. 2008. PMID: 18635499 Clinical Trial.
• Intraarticular tramadol-bupivacaine combination prolongs the duration of postoperative analgesia after outpatient arthroscopic knee surgery.

  Zeidan A, Kassem R, Nahleh N, Maaliki H, El-Khatib M, Struys MM, Baraka A. Zeidan A, et al. Anesth Analg. 2008 Jul;107(1):292-9. doi: 10.1213/ane.0b013e31816ba364. Anesth Analg. 2008. PMID: 18635500 Clinical Trial.