Part 2 book “Therapeutic modalities in rehabilitation” has contents: Therapeutic ultrasound, extracorporeal shockwave therapy, shortwave and microwave diathermy, spinal traction, intermittent compression devices, therapeutic massage. | PART FOUR Sound Energy Modalities chapter 10 Therapeutic Ultrasound David O. Draper and William E. Prentice OBJECTIVES Following completion of this chapter, the student will be able to: Analyze the transmission of acoustic energy in biologic tissues relative to waveforms, frequency, velocity, and attenuation. Break down the basic physics involved in the production of a beam of therapeutic ultrasound. Compare both the thermal and nonthermal physiologic effects of therapeutic ultrasound. Evaluate specific techniques of application of therapeutic ultrasound and how they may be modified to achieve treatment goals. Choose the most appropriate and clinically effective uses for therapeutic ultrasound. Explain the technique and clinical application of phonophoresis. Identify the contraindications and precautions that should be observed with therapeutic ultrasound. In the medical community, ultrasound is a modality that is used for a number of different purposes including diagnosis, destruction of tissue, and as a therapeutic agent. Diagnostic ultrasound has been used for more than 50 years for the purpose of imaging internal structures. Historically, diagnostic ultrasound has been used to image the fetus during pregnancy. More recently, with a reduction of equipment costs, significant improvements in image resolution, real-time ultrasonographic imaging and detailed anatomic imaging, diagnostic ultrasound has expanded to various clinical practices that evaluate, diagnose, and treat musculoskeletal disorders. Diagnostic musculoskeletal ultrasound (MSK) can identify pathology in muscle, tendons, ligaments, bones, and Ultrasound has also been used to produce extreme tissue hyperthermia that has been demonstrated to have tumoricidal effects in cancer patients. In clinical practice, ultrasound is one of the most widely used therapeutic modalities in addition to superficial heat and cold and electrical stimulating It has been used for therapeutic .