Trabert 2w399

3.3 2-5 Current (Träbert) 3.3.1 Description of the current type Träbert uses the term ‘2-5 current’ to refer to a direct current with a rectangular pulse having a phase duration of 2 ms and a phase interval of 5 ms. This current type is also referred to in the literature as ‘Ultra-Reiz’ current. The frequency of the current is approx. 143 Hz. As stated in paragraph 2.3., this current type is suitable for selective stimulation of thick fibres. From the foregoing it is clear that the configuration of the current is very simple. Träbert himself offered no explanation for the choice of parameters. Nevertheless, many workers have adopted the therapy according to Träbert, and it is still applied with success. A remarkable effect is the freedom from pain which can already appear

after the first

treatment, and can last for several hours.

Fig.8. 2-5 Current (Träbert) 3.3.2. Application of 2-5 current Träbert described four typical locations for the electrodes (EL = Electrode Localization), which correspond well with the segmental theory in electrotherapy (Fig. 9). The polarity depended on the target area. For example, EL I was used to treat both headaches and neck pain. In the treatment of headaches the negative electrode was positioned caudally with respect to the positive electrode, while in the treatment of neck pain radiating to the arm the negative electrode was positioned proximally with respect to the positive electrode. The electrode positioning is extremely well suited to segmental applications. For example, EL IV is particularly suitable for the treatment of intermittent claudication. If the condition is bilateral, the negative electrode can be divided and positioned in the gluteal region. Once the current amplitude has been set, accommodation will occur fairly quickly, due to the absence of frequency changes or interruptions. After a short period the patient will no

longer feel the current as strongly as at the beginning. Träbert therefore recommended that the amplitude should be increased in steps, up to the limit of tolerance.

Fig. 9. Position of electrodes (Träbert) The amplitude is increased at each step until muscle contractions occur. The muscle contractions must be palpable or just visible. The contractions may contribute to improved perfusion of the muscles (muscle pump mechanism). As soon as the contractions start to reduce, the current amplitude should be increased again. In practice, this means that the current amplitude is increased at intervals of one minute. The limit of tolerance is generally

reached after 5 to 7 minutes, after which the current amplitude is no longer increased. In some cases, current amplitudes of 70-80 mA may be reached. Although the direct value is relatively low, the increasing amplitude makes it necessary to use thick sponges (minimum thickness 1 cm) that are thoroughly wet. If required, water may be added during the treatment.The electrodes must be fixed firmly in place. Due to the muscle contractions evoked, fixation with the aid of sandbags is not always sufficient. In the literature, reference is made to a maximum treatment time of 15 minutes.