the very first thing is that use of diathermy is not decreasin the way u think,
cause PWD if is thing of choice pple prefer it ,othewise swd is most preferable deep heatin modality,
n the thing to be quote is that swd is avoided in elderlies,cause it to some extent can damage the skeleton ,n lead to calcarea deficiency ,inducin its peripheral absorption ,which's less in case of PWD,d/t some rest period .