• Am J. Orthop. · Oct 1996

    Evaluation of continuous intraspinal narcotic analgesia for chronic pain from benign causes.

    • G M Yoshida, R W Nelson, D A Capen, S Nagelberg, J C Thomas, R L Rimoldi, and W Haye.
    • Complex Spine Clinic, Rancho Los Amigos Medical Center, Downey, California, USA.
    • Am J. Orthop. 1996 Oct 1;25(10):693-4.

    AbstractIntraspinal narcotic analgesia (INA) has been used for chronic pain from nonmalignant causes with moderate success. To ascertain the efficacy of the morphine pump, we reviewed the 2-year results of continuous INA in 18 patients with failed back syndrome or arachnoiditis and intractable, debilitating pain that was unrelieved by conventional means. All patients underwent a trial screening of single-dose intrathecal narcotics with good pain relief. After 2 years, 8 pumps were still functioning, 8 patients had the pump removed or turned off, and 2 patients were lost to follow-up. Our patients averaged 1.4 additional procedures or hospitalizations after initial pump insertion. Overall, only 4 patients had objective evidence of benefit from INA, for a success rate of 25%. Results of this review suggest INA should not be used for the long-term management of chronic pain from nonmalignant causes.

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