Thank you for your question. Although without being able to examine you I can not offer you the specific advice on diagnosis and treatment that you need, but I would try to provide you some relevant information about your health concern.
Generally for back surgery suggested for warning symptoms that include loss of control of the bladder function, paralysis & spasticity of both the legs that you are experiencing now. If you are suffering continuous weakness and notice reduced strength of muscle bulk in legs, loss of control of bowel/bladder function, therefore an appointment with a neurologist right away to make a decision on this. Further referral to a physiotherapist for spinal exercises, use of back braces, surgical intervention (such as diskectomy), steroid injection in back and pain killers could be beneficial and may produce relief of symptoms. Urinary/bowel incontinence may be treated with methods like behavioral method (learning how to delay urination, going for the urination according to the clock rather than urgency, fluid & diet management), physical therapy (Kegel’s exercise-pelvic floor muscle strengthening, electrical stimulation) and certain medications can be recommended by your treating doctor to get some relief from your symptoms. Hope this helps. Take Care & Stay Healthy!!!
What part of your spine has DDD and what are your symptoms? What treatment have you tried thus far?