Oh rats, just lost my entire post...
Let's try again...
You didn't say what meds you got him on, Cammypigeon, but I hope Baytril
(20mg per kilo of body weight per day) is involved. For 3 reasons:
1) That sounds like an infected fracture. The swelling is bad (but could just be because the bones are setting with an overlap) but the heat is worse -- infected for sure!
2) The lump on the wing could well be Salmonella. Is it on the elbow, can you take a pic?
3) I don't think he's been hit by a car. I think it was predator attack, and you know their saliva can carry all sorts of bacteria.
With the information you gave, I would suspect he was grounded by Salmonella and then attacked. Best check for any other injuries.
The lack of feeling on the leg is disheartening. Given the number of days that have passed, the bones will have started knitting (or trying to), but lack of feeling points towards a non-union, which means the lower half of the leg may end up 'hanging loose' and need to be amputated.
It's really easy fixing a broken lower leg, if caught early. First give him a drop of Metacam (takes about 20 mins for it to start working) while you do the other preparations.
I use the handle of a plastic spoon or fork, the kind that's hollow and rounded, cut a piece the right length to go from just below the 'knee' to the 'ankle', scald it in boiling water to smooth the ends, then wrap it inside and out in soft gauze. Have some more gauze ready to gently wrap round the leg, and a bit of adhesive.
Feel for the fracture, GENTLY pull the bones away from each other, then line them up, put the half tube round the BACK of the leg with the opening to the front, wrap some gauze, not too tight around the leg and splint, secure with adhesive, and Bob's your uncle!
In 21 days the splint can come off, and after a week of gradual exercise and use the leg is as good as new.
Would you like someone closer to hand to talk with? Our member Abdul van Alawi has started a pigeon rescue service in London, and his friend Maciej (also in London) is a very experienced rehabber and a wonderful person. Here's Abdul's contact: 07508581758 , 07909795064 General Question or worried : 07939384753 Email Address: PigeonRescueTeam@hotmail.com
Good luck! Please keep us posted!