"There is no manual on how to deal with the kinds of wounds that we are seeing on poached rhino," Gerhard Steenkamp, one of the veterinarians who heads the organisation, said in a blog post on the group's website.
"What we are learning every day will allow us to try to ensure the continuation of this iconic species that are being killed for something that has no medical benefit to humans."
Hope has become the emblem of the rhino survivors, but not always a star patient. She has removed the plates that veterinarians previously drilled into her skull to cover the wound, by rubbing them against her enclosure. Nevertheless, Johan Marais, the veterinarian who founded Saving the Survivors, told reporters before the surgery last week that 60 per cent of her injury had healed, though it remained a major hole that exposed her sinuses, as seen in this video (which is not for the weak of stomach).
The veterinarians used elasticized cords that were imported from Canada and are typically used in human stomach surgeries. They are supposed to pull the skin on both sides of the rhino's wound together without breaking it, sort of like shoelaces, Marais told reporters. The wound was then wrapped in bandages and blue tape.
"It is the first time this has ever been done on an animal, let alone a rhino," Marais said, according to Anadolu Agency.
"Two weeks will tell. If she just doesn't rip it off. . .The biggest challenge with Hope so far is not to put the dressing on her but to keep them on, as she keeps ripping them off," Marais said.
On Tuesday, one week after the procedure, Saving the Survivors said on its Facebook page that the rhino hadn't yet tried to remove the cords or bandages. And, the group reported, a bit of horn "the size of a fried egg" has grown back. The group said it does not expect much more horn to regenerate - rhinoceros horns can re-grow, but rarely if part of the skull is removed - but still said veterinarians were "gobsmacked."