Can PDO threads snap? If so what is the ramifications? I think I felt one snap. I had 3 placed on each cheek (barbs)

It is very unlikely for a PDO thread to snap.  Sometimes a thread can slip a bit out of place under the skin and sounds and feels frightening to the patient.  There are no ramifications to this, other than if the thread slips enough, you will lose some of the lifting benefit.  Other threads can be placed to re-suspend the area if necessary.

Hello!
Theoretically, threads can “snap” or break, but this is not as common as you may think. However, hearing and feeling a snapping sensation is common, and is typically caused by the threads slightly moving in the face during animation and mastication. This snapping sensation does not conclude that the thread broke, but that the thread is in its integration phase as it settles into the facial tissue. If the thread did in fact “snap”, you would notice a change in the contour of your face and see that the outline of the thread has become more visible to the eye. The ramifications of broken threads is migration, protrusion, and loss of tissue suspension.
With Love & Gratitude,Jordan Jacobs, RN, CANSOwner/CEOAesthetic Injector