#held down

Easily one of my favorite Whump tropes is Whumpee being held down by two or more people, resulting in them being forced into witnessing or experiencing the terror of helplessness as they can do nothing but thrash and beg.

A character struggling to hold an injured character down so that another can tend to their wounds, going from restraining them with just firmly-grasped hands, maybe only to the affected limb, to leaning more of their weight down upon them, to fully laying across the struggling, bucking, writhing character to pin them to the surface they're laying on with their full weight, pressing them into the mattress or dirt or boards, digging in a shoulder or knee for extra leverage, fighting to hold them still to prevent further injury and allow the other tending character to work.