Okay, so a friend of mine has a 7 year old horse that tangled with a porcupine. Long story short, the vet estimates the quills were in the horse's leg for about 3 days before being spotted. Horse is boarded out and barn owner apparently doesn't check horses that closely. Vet removed quills and prescribed antibiotics. Horse changed barns two days after the quills were removed because the barn owner decided he knew more than the vet and turned her back out into general population, despite vet's orders for solitary confinement to restrict movement. After a week, swelling is not gone and ultrasound shows a couple quill ends still embedded in tendon. Vet says surgery could be the next step. Has anyone been in this situation where surgery could be avoided in favour of a less invasive/expensive option? My friend is all prepared to pay for the surgery (in the realm of $2000, the vet says), but no one wants to spend that money if there are other options to try first. Any ideas? Horse is currently in a small pen with a poultice plus pain killers and antibiotics to continue preventing infection.