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Diadynamic therapy is an another example for low frequency current rarely used in UK but in mainland Europe has stronger following. it is monophasic sinusoidal current was developed in the 1950's,by Bernard (a French Dentist). so it is called also Bernard current.The frequency is operating at 50 Hz with pulse duration 10 msec.
There are four different current available for Didynamic current.
- Monophase fixe.(MF)
- Diphase fixe.(DF)
- Courtes periodes.(CP)
- Longues periodes.(LP)
Types of Diadynamic current
|DF||Full wave alternating current||Has strong analgesic effect for short duration||Pain with muscle spasm||Itching or prickling sensation|
|MF||Half wave alternating current||Stimulate muscle contraction||Pain without muscle spasm||Strong vibration sensation|
|CP||Equal phase of DF and MF are alternating without interval pauses||Stimulate circulation and reduce pain||Traumatic pain||Rapid alternating feeling between DF and MF|
|LP||10 sec MF followed by 5 sec DF in which intensity and frequency rise then fall||long lasting analgesic effect||Myalgesia\Neuralgia||Strong vibration to little pricking|
Clinical application of Diadynamic current
Pain spot application
The two electrodes are applied as a bipolar technique with the anode applied over pain spot and the cathode adjacent to it.
Nerve Trunk application
The two electrodes are placed along the course of the peripheral nerve where the nerve is superficial.
The electrodes may be applied on both sides of the spine at the level of the nerve root supplying the painful area.
The electrodes are applied along the vascular paths affected in the circulatory disorders.
to treat a joint, electrodes positioned on opposite side of the joint.
- bulleted list
- numbered list
- de Carvalho, A. R., E. M. Fungueto, et al. "Bernard's diadynamic currents and iontophoresis in low back pain treatment (2005).
- Bolel, K., S. Hizmetli, et al.. "Sympathetic skin responses in reflex sympathetic dystrophy. (2006)
- Can, F., R. Tandoğan, et al.. "Rehabilitation of patellofemoral pain syndrome: TENS versus diadynamic current therapy for pain relief." The Pain Clinic (2003)