Kasdan probably did not respond because they do not do medical malpractice cases.
The upshot of this appears to be as follows:
Assuming breach is proven against the builder, it should be held liable for repair to the sidewalk/home and for your medical bills and pain and suffering if the surgery had gone as planned.
Assuming breach is proven against the surgeon for medical malpractice, that doctor should be liable for any extra medical bills caused by his negligence and any extra pain and suffering and time off of work, and disability etc..
While we are not permitted to refer a lawyer to you, you may want to contact your State Bar:
I would seek a med mal lawyer with at least 10 years experience and one that has tried at least three jury trials
. Most MM lawyers will agree to meet with you for a free consult to see if they will take your case on a contingency fee basis. If they do, it is usually for 33% if the case settles before trial and 45% if the case goes to trial.
You will want to have 5 years of your medical history in hand before you meet with the lawyer.
Please assign a feedback rating so JA will compensate me for my time. You are free to ask follow up questions thereafter at no charge. Please allow up to 24 hours for a follow-up response if I am signed off.
If, for some reason, you are not satisfied with the answer, I would appreciate knowing why so that I can try to clear up any misunderstanding that may have taken place. Also, if you need a refund, just let me know and I will inform JA on your behalf. Finally, you may request me in the future by beginning the question with "THIS IS FOR MAVERICK".
Thank you for using Just Answer. Best wishes for 2015!