Hi there Dilly and family, welcome. We are so sorry about the accident but glad that Dilly is overall OK. You've come to the right place for input, as many members have gone through similar situations.

Is there a reason why your vet didn't refer you to a specialist? Does the vet know about the dangling leg? 

First, please don't go to any type of rehab center before checking in with an orthopedic specialist. If your vet didn't refer you to a veterinary orthopedic specialist, now is the time to start searching for one. If you don't know of one, let us know where you live and we'll help find one for you (you can also Private Message me your location through the little envelope icon to the right of my post). The orthopedic vet will do tests to find out how much nerve or muscle damage was done, and if there is a chance that it can be either surgically repaired or healed through canine rehabilitation therapy.

If your ortho vet determines that canine rehab therapy is worth a try, sometimes these injuries can heal in a few weeks to a few months. Rehab vets have told us that it's best to give an injury like this at least three to six months before deciding on amputation surgery, provided that the dog is doing ongoing, daily rehab therapy exercises at home to recovery. A good rehab therapist will understand how to create a program for you and Dilly and work with you to teach you the exercises so you can do them at home, with only occasional check-ins at the rehab clinic.

One more thing, with all due respect to your knowledge as a human chiropractor, please don't adjust him any further until you meet with an ortho specialist. Animal rehab specialists tell us that oftentimes, well-intentioned human chiropractors can do more damage by working on animals without having had any previous education on animal biomechanics. 

Let us know how he is doing and how else we can help OK?