Hello and Welcome to 'Ask A Doctor' service. I have reviewed your query and here is my advice.
In your case,anesthetic
risk is greater than general population as u have so many risk factors.The operative risk include infection, malposition of screws,loss of power in either upper limb, loss of sensations and respiratory paralysis
rarely. Also u will need care postoperatively. I will advise you to get rid of your infection first before going to surgery.
Hope I have answered your query. Let me know if I can assist you further.