It's hard to tell by the picture but I had a baby with a broken leg. He broke the upper part (thigh bone) of his leg. There was nothing they could do for that other than charge me for the xray and tell me to keep him as calm and still as possible until it heals. They heal amazingly fast.
I gave my squirrel Boiron, Symphytum Officinale- 30 C. It was recommended by another member here on TSB to help quicken the healing process for the bone.