2Thompson D F, Pierce D R. Local analgesia with opioid drugs [J]. Ann-Pharmacother, 1995,29(2) : 189-190.
3Stein C, Pfluger M, Yassouridis A, et al. No tolerance to peripheral morphine analgesia in presence of opioid expression in inflamed synovia [ J ]. J Clin Invest , 1996,98 (3) : 793-799.
4Kalso E, Tramer M R, Carroll D, et al. Pain relief from intraarticular morphine after knee surgery: a qualitative review [J]. Pain, 1997,71(2) : 127-134.
5Likar R, Schafter M, Paulak F, et al. Intra-articular morphine analgesia in chronic patients with osteoarthritis [J]. Anesth-Analg, 1997,84(6) : 1313-1317.
6McFadzean I. The ionic mechanisms underlying opioid actions [J]. Neuropeptides, 1988, 11 (2) : 173-180.
7Yaksh T L. Substance P release from knee joint afferent terminals modulation byopioids [ J ]. Brain Res, 1988,458 (2) : 319-324.