Patient History: JB (fictitious name) is a 36 yr old white male, allergic to codeine and morphine, who sustained an industrial accident to his right hand in May 1986. Electrical studies revealed bilateral carpal tunnel syndrome and entrapment of the ulnar nerves at the wrist. Results of a cervical thermogram done in February 1990 were consistent with severe bilateral RSD.
Treatment: JB subsequently received 14 stellate ganglion blocks, numerous other nerve blocks, and concurrent medication and physical therapy (including therapy at the Hand Rehabilitation Center of Atlanta) which did not appear to help.
Compounded Medication: In February 1994, JB received a prescription for ketoprofen 10% in pluronic lecithin organogel (PLO). The strength was increased to 20% the following month. In January 1995, n-decyl methyl sulfoxide was added to the 20% ketoprofen to enhance transdermal absorption. In four days, the patient returned to the pharmacy requesting a refill, and reported significant improvement in hand color and decrease in swelling. Within one month of using 120 gm of enhanced ketoprofen per week, the improvement was visually obvious. To assess the risk of toxicity with such high doses of ketoprofen, a blood level was done 5/95, and reported no detectable blood levels (consistent with the literature regarding transdermal NSAID therapy).
Pharmacokinetics of ketoprofen in man after repeated percutaneous administration.Outcome of Therapy: Prior to beginning the ketoprofen therapy (Feb '94), JB reported a pain level of 10 on a scale of I to 10. In March 1996, he reported a pain level of 4 on bad days and 0 on good days.
Due to the successful outcome achieved by the use of high dose transdermal ketoprofen in the above case, we treated two female patients in a similar manner. Patient .A responded to enhanced ketoprofen 50% in a vanishing lecithin organogel (VLO), and used 60 gm per week. Patient B received relief with ketoprofen 30% and 0.3% dextromethorphan in VLO. These patients, who were all refractory to previous treatment, have substantially benefited from the transdermal absorption of ketoprofen. Oral administration of exceedingly high doses of ketoprofen would have been unacceptable due to the high blood levels that would have been required to achieve required tissue levels.