You're speaking to Dr. Michael Salkin. Welcome to JustAnswer. I'm currently typing up my reply.
Kate, I'm sorry that your question wasn't answered in a timely manner. The image of the X-ray arrived the size of a postage stamp and so it's difficult for me to assess that hip properly. In general, if the femoral head fracture is well-aligned, you have the option of simply resting Fluffy because these bones can re-attach. Also, it's "old thinking" that larger dogs don't do well after an FHO. We're shown that larger breeds can do very well after an FHO. I'd like to be more accurate for you but I'll need to see an image that can be enlarged without losing resolution - in other words, a high pixel image.
Yes, thank you! It appears that avascular necrosis - lack of blood supply and bone death - is occurring in that femoral head. That won't allow "watchful waiting" for healing to occur. FHO, then, makes sense. Please continue our conversation if you wish.
You'll be amazed how quickly he returns to function. He'll be a bit "sloppy" at first but will adjust quickly. If he goes home on a nonsteroidal antiinflammatory drug (NSAID) and narcotic analgesic - as he should - he should do nicely within 3 weeks. Please continue our conversation if you wish.
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