Low-frequency ultrasound for wound healing

The application of therapeutic ultrasound of 0.8 to 3 MHz for the stimulation of wound healing is often described in the literature. On the other hand applications of low-frequency ultrasound below 100 kHz are hardly known. The paper gives an overview of the effective components, the application techniques and the clinical results on basis of the available literature. As result it shows, that low-frequency ultrasound in subaqueous application presents new ways for the wound therapy. The method can be used profitable for soft and smooth wound cleansing, wound disinfection and acceleration of the wound granulation. Healing time will so be lowered by 30 to 50 % and chronic wounds can be taken back into the acute state. Due to the bioacoustic;al effect in the water bath topical antiseptics can be applied in a low dosage. A possible toxic impact will be reduced and the granulation will not be impeded. The preoperative wound conditioning before dermatoplasty and the therapy of arterial-venous leg ulcers are fundamental ranges of application. However the question on the optimal dosage remains still unreplied and the supply of appropriate ultrasound therapy machines by the industry is very low.