Ultrasound is applied using a transducer or applicator that is in direct contact with the patient's skin. Gel is used on all surfaces of the head to reduce friction and assist transmission of the ultrasonic waves. Therapeutic ultrasound in physical therapy is alternating compression and rarefaction of sound waves with a frequency of to MHz . Maximum energy absorption in soft tissue occurs from 2 to 5 cm. Intensity decreases as the waves penetrate deeper. They are absorbed primarily by connective tissue : ligaments , tendons , and fascia (and also by scar tissue ). 
Spinal injections, like other medical procedures, have risks. Complications include risk of infection, low blood pressure, headache, and injury to nerve tissue. These risks are low. Conclusion
We perform the full range of injection therapies to provide the best possible pain management for your condition. The skilled medical team at SDCSD will carefully discuss the options with you, and we'll give you detailed instructions for before and after the procedure so that you are well prepared.
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