Soft-tissue mobilization is manual therapy focused on the body's soft tissue. It is most similar to massage. It can be perform with hands or instrument-assisted. Watch this 9 minute video for more information. https://www.youtube.com/watch?v=k9vwn1qF9Nk (demonstration starts at 5:40)
Are there any risks?
There are no serious risks. Sometimes patients are sore afterwards.