Asking for a friend. Is it ever okay to let a wound heal that has undermining and tunneling? His is not getting packed, just covered over with foam dressing. He was just taken off a picc line for osteomyelitis. The last measurement for the tunneling was 4 cm and undermining all the way around the wound. The doctor says if it still has an infection it will not heal and if it is not infected then it will heal. So the plan is to try to let it heal completely over and see what happens. I am very uncomfortable with this and told this to my friend. What is the consensus here?