On the safe use of microwave and shortwave diathermy units.

Diathermy is a common treatment modality used to relieve pain through localized heating. This paper briefly discusses the mechanisms through which heat is generated in tissue and the absorption characteristics of the applied electromagnetic radiation. The adverse effects of this radiation are reviewed with particular emphasis on the current exposure limits for operators and non-patients in the vicinity of diathermy devices. The newly introduced codes of practice for the 'Safe Use of Shortwave (Radiofrequency) and Microwave Diathermy' are also discussed.