You can use FindChild() to find a specific child (bone) in your animmesh. Like so:
ent = findchild(body, "Thigh_R")
With that entity handle, you can rotate/position/scale the Thigh as you would any other object..
ent = findchild(body, "Thigh_R")
With that entity handle, you can rotate/position/scale the Thigh as you would any other object..