Abstract: Objective To observe the therapeutic effect of warm magnetic field combined with medium frequency electric current on lumbar intervertebral disc protrusion of old patients.Methods By retrospective analysis, 120 old patients with lumbar intervertebral disc protrusion were divided into the therapeutical group (treated with warm magnetic field combined with medium frequency electric current) and control group (treated with ultrashort wave combined with medium frequency electric current), and therapeutic effects of two groups were compared.Results There was no significant difference between the therapeutic effects of two groups ( P>0.05).Conclusion Warm magnetic field combined with medium frequency electric current is same effect as ultrashort wave combined with medium frequency electric current on lumbar intervertebral disc protrusion of old patients.

Key words: warm magnetic field, ultrashort wave, medium frequency electric current, lumbar intervertebral disc protrusion