Usage patterns
〈場所〉に傷跡が残るfor a scar to remain (on a body part)
After the surgery, a scar remained on his arm.
傷跡が消えるfor a scar to fade away
Over time, the scar gradually faded away.
傷跡を隠すto hide a scar
She was hiding the scar with makeup.
〈人〉の心に傷跡を残すto leave a psychological scar on someone
The incident left a deep psychological scar on him.