This question cannot be answered here.
Assigning blame for your lumbar spine disease is a matter for disability and workers compensation courts, attorneys, judges, medical witnesses, etc. They are the people that can perhaps find fault and compensation.
Remember, I say perhaps. These kind of signs can happen naturally as a result of spine disease.
If you believe you have a case, consult a personal injury attorney.
Seek treatment for your spine injuries.
there is a secret database of such settlements available to attorneys by paid subscription. If you know an attorney they might help you. Invariably, there is a clause forbidding the individual from disclosing the amount of the settlement.